LANKESTERIANA is an international scientific journal published by the Lankester Botanical Garden Research Center – University of Costa Rica. The journal is globally recognized for its specialization and contributions to the knowledge of the orchid family. In addition to research articles, LANKESTERIANA is dedicated to facilitating scholarly communication and exchange by publishing a comprehensive array of content, including book reviews, checklists, comments, conference proceedings, correspondence, corrigenda, obituaries, opinions, reviews, and special issue contributions. LANKESTERIANA maintains rigorous academic standards as a peer-reviewed journal, ensuring that only the highest quality research articles are published. Through this rigorous review process, the journal maintains its reputation for excellence and reliability, providing readers with access to credible, authoritative scientific information on orchids. Furthermore, LANKESTERIANA values contributions from authors worldwide, with English as the official language of the journal. Through Early View, LANKESTERIANA is committed to reducing the time to effective publication of scientific, peer-reviewed papers, for the benefit of both authors and the journal's readers. The papers in this section of Lankesteriana receive an individual DOI and are published online as soon as the editorial process is concluded positively. They represent early views of the final papers exactly as they will appear in the hard-printed, complete issue of the journal. The effective date of publication of each paper is established by the date of its first publication online, which is recorded on the front page of the paper, both in its online and hard-printed versions. The printed version of LANKESTERIANA is published periodically in volumes by the Lankester Botanical Garden, University of Costa Rica. Each volume is made up of three issues published in April (covers the period from January to April), August (covers from May to August), and December (covers from September to December). LANKESTERIANA is indexed by Clarivate Biosis, SciELO, Scopus, Scirus, WZB, Redalyc, DOAJ, PERIODICA, BIBLAT, The Latindex Directory, and it is included in databases such as E-journals, Ebookbrowse, FAO Online Catalogues, CiteBank, Mendeley, WorldCat, Core Electronic Journals Library, and Biodiversity Heritage Library, and in the electronic resources of the Columbia University, the University of Florida, the University of Hamburg, and the Smithsonian Institution, among others. The Lankester Botanical Garden is a research center of the University of Costa Rica, LANKESTERIANA´ s publishing institution, which holds the copyright and publishing rights for every contribution under a Creative Commons Attribution-Non-Commercial-No Derivatives 3.0 Costa Rica license (CC BY-NC-ND 3.0 CR). Postmaster: Lankester Botanical Garden Research Center, University of Costa Rica, P.O. Box 302-7050 Cartago, Costa Rica, C.A. jardin.lankester@ucr.ac.cr ISSN-e: 2215-2067 | ISSN 1409-3871
According to the Open Access policy promoted by the University of Costa Rica, all the papers published by Lankesteriana are licensed under the Creative Commons copyright and can be downloaded free of charge. The journal holds copyright and publishing rights under the CC BY-NC-ND 3.0 CR license. Before the publication of the materials submitted by the author(s) in LANKESTERIANA, the author(s) hereby assign all rights in the article to the Lankester Botanical Garden.
new species of Maxillaria (Maxillariinae) from the northern Andes and a new synonym of Maxillaria floribunda
Maxillaria andina, a new orchid species from high-Andean ecosystems of southwestern Colombia and northern Ecuador, is described. The new species is distinguished by having long and narrowly linear white sepals and petals with revolute margins, lip with mucronate epichile, and callus without hairs or trichomes. Distinguishing characters are provided to differentiate it from morphologically similar species, along with ecological and taxonomical notes. Additionally, Maxillaria sibundoyensis is synonymized with Maxillaria floribunda.
Copyright (c) 2024 Lankester Botanical Garden, University of Costa Rica https://creativecommons.org/licenses/by-nc-nd/3.0/cr/
new species of Epidendrum (Orchidaceae: Laeliinae) of the Incomptum group from the north of Antioquia, Colombia
A new species of Epidendrum of the Incomptum group is described and illustrated, so far found only from the type locality. Information is provided to separate between the species belonging to the Arbuscula and Incomptum groups. Moreover, the new taxon described here, Epidendrum pembertonii, is thoroughly compared with the four most morphologically similar species (E. brenesii, E. bisulcatum, E. foldatsii, E. sotoanum), showing notable differences in the number and shape of leaves, inflorescence length, color of flowers, sepals venation, shape and ornamentation of the lip and column.
Copyright (c) 2024 Lankesteriana: International Journal on Orchidology https://creativecommons.org/licenses/by-nc-nd/3.0/cr/
Two new species of Pleurothallidinae (Orchidaceae) from cloud forest remnants in the eastern Andes of Colombia
Two new pleurothallid species of the genera Lepanthes and Pleurothallis, native to cloud forest remnants of the Eastern Andes of Colombia, are described and illustrated. Lepanthes pseudoabitaguae is compared with Lepanthes abitaguae, from which it differs by the color of the flowers and by the oblong and biglandular appendix. Pleurothallis falcata is similar to Pleurothallis suspensa, but can be recognized by the falcate to lanceolate leaves, denser inflorescences, longer sepals, and the lip completely recurved with erose apical margins. We also provide comparisons with similar species and offer comments on their ecology. Furthermore, we discuss the significance of this highly anthropized region and its richness in orchid species.
Malaxis engelsii (Malaxidinae), a new species from the upper montane forest of the Atlantic Rainforest in southern Brazil
Malaxis engelsii is a newly discovered orchid found in the upper montane forests of the Atlantic Rainforest in Paraná, Brazil. This species is characterized by its small size, elliptic leaves, flowers with partially connate sepals at the base, trilobate lip with four cavities, and a longitudinal keel on the adaxial surface of the lip apex. A detailed description, photographs, drawings, and comparison with similar species, Malaxis cipoensis, M. sertulifera, and M. ybytus, are provided. Currently, it is classified according to the IUCN guidelines as “Endangered (EN)’’.
Dendrobium derryi (Epidendroideae: Malaxideae): an addition to the flora of India
Dendrobium derryi has been added to the orchid flora of India from Karbi Anglong district of Assam. This article provides an updated description of the species, accompanied by detailed photos and line drawings based on material collected within the country.
Copyright (c) 2024 Lankesteriana https://creativecommons.org/licenses/by-nc-nd/3.0/cr/
Notes on australasian orchids 8: Eight new species of Hymenochilus (Cranichideae: Pterostylidinae) and clarification of two previously described species
Eight new species of Hymenochilus from Australia are described and illustrated. Six of the new species have affinities to (and are here compared with) H. cycnocephalus: H. anemophilus, H. calcicola, H. cymbellus, H. longipes, H. nemoralis and H. pachylus. Hymenochilus anemophilus is shorter (2–8 cm), with dark green strongly veined rosette leaves, crowded dark green flowers, oblong to obovate labellum lamina and, a broader blunter beak on the labellum appendage; H. calcicola is shorter (3–12 cm), crowded green flowers with prominent dark green stripes, ovate petals with a strongly developed basal flange on the anterior side and narrow elliptic labellum lamina with a broad pointed beak on the labellum appendage; H. cymbellus differs by its sparser basal rosette with narrower rosette leaves, thinner scapes, flowers with distinct darker green stripes and shallowly saccate lateral sepals that narrow inwards to a distinctly pointed apex; H. longipes differs by its thin-textured rosette leaves, widely spaced darker green flowers with darker green veins, elliptic-obovate labellum lamina and a longer labellum basal appendage which protrudes prominently from the flower in side view; H. nemoralis has longer rosette leaves, thicker scape and darker green flowers with prominent narrow dark green stripes; H. pachylus has thicker rosette leaves, taller, thicker scape, flowers prominently striped, elliptic-obovate labellum lamina and labellum appendage with a short thick beak. Two of the new species have affinities (and are here compared) with H. muticus: H. pagophilus and H. pisinnus. Hymenochilus pagophilus differs by its moderately crowded to crowded flowers, broader, shinier flowers and rectangular-obovate labellum and H. pisinnus differs by its smaller rosette with smaller, narrower leaves, thinner scape, smaller flowers, that are often on long pedicels, shorter, shallowly saccate lateral sepals, smaller rhomboid petals and, smaller obovate labellum. In addition, Hymenochilus cycnocephalus and H. muticus, are characterised in the strict sense with full descriptions, distribution, and habitat.
Two new species of Telipogon (Orchidaceae: Oncidiinae) from Costa Rica
The Neotropical genus Telipogon (Orchidaceae: Oncidiinae), comprising approximately 250 species, exhibits remarkable species diversity in the humid, montane forests of southern Central America and the Tropical Andes. Telipogon, when broadly defined, encompasses both the large-flowered species that mimic tachinid flies and the small-flowered species formerly classified under Stellilabium. In Costa Rica, this genus includes 55 species, with 16 classified as small-flowered species. While the large-flowered species of Telipogon (in the strict sense) have been taxonomically revised, the small-flowered species have yet to be the subject of a thorough taxonomic revision. Our research aims to partially fill this gap by focusing on a comparative morphological analysis of two novel small-flowered Telipogon species. We describe and illustrate Telipogon lateritius and T. muntzii, both discovered in the humid mid-elevation forest of the Caribbean watershed in Cordillera de Talamanca, Costa Rica. Telipogon lateritius is notable for its distinctive brick-colored flowers, featuring sepals, petals, and lips striped in chestnut brown; the lateral sepals connate into a triangular-ovate synsepal, complemented by sparse, stiff pubescence at the base of the lip. Telipogon muntzii, although closely resembling T. anacristinae, differs in its unique olive-green flowers, sparse trichomes on the lip, narrowly oblong lateral lobes of the column, and a helmet-shaped median lobe of the column exclusively covered by simple trichomes. This study provides new additions for a future taxonomic revision of Telipogon in Costa Rica.
Host suitability for germination differs from that of later stages of development in a rare epiphytic orchid
We explore phorophyte suitability for germination and establishment of the epiphytic orchid, Psychilis kraenzlinii. We found that the orchid grows on a subset of the available tree species and shows preference for the endemic Machaonia portoricensis (Rubiaceae). The orchid preferred trees with smoother bark with high water holding capacity and low water retention capacity. Microclimatic conditions under which embryos began pre-germination stages mirrored that of the adult orchid, but germination did not, suggesting that suitable germination sites are not necessarily the best sites for later stages of development.
A new Pseudolepanthes (Pleurothallidinae: Orchidaceae) from Northwest Ecuador
A new species of the genus Pseudolepanthes discovered in Carchi province, northwest Ecuador, is described here. The new species is compared with P. zunagensis from which it is distinguished by a longer inflorescence with successive vinaceous or pale-yellow flowers, an elongate arcuate column, and a lip with an erect, thick, widely rectangular central callus.
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Sarcoglottis wernerherzogii (Spiranthinae), a new species from Cusco, Peru: addenda
A comparative table between Sarcoglottis wernerherzogii, S. fasciculata, and other species of the genus present in Peru, is included.
Pachygenium muyscarum (Spiranthinae), a new species from the subxerophitic enclaves from the Eastern Range of Colombia
Pachygenium muyscarum, a new species from Colombia, is described, illustrated, and aspects related to its distribution, ecology, conservation status, and relationships with morphologically similar species are discussed. This species is characterized by flowering without leaves, labellum 1.4–1.6 cm long, with the apex trilobulate and labellum nectar glands 0.2–0.4 cm long, subulate and uncinate. To date, this is the only species of the genus present in Colombia, being endemic to the subxerophytic enclaves of Cundinamarca.
Copyright (c) 2023 Lankesteriana: International Journal on Orchidology https://creativecommons.org/licenses/by-nc-nd/3.0/cr/
First record of a natural hybrid of the genus Gongora (Stanhopeinae) and comments on the parent species
The first natural hybrid of the genus Gongora is described for the department of Copán in Honduras, between the species Gongora truncata and Gongora batemanii (synonym: Gongora cassidea). The nothospecies described here presents intermediate characteristics between both species, such as setaceous projections on the lip, a large callus, spatulate epichile, and a cucullate hard dorsal sepal. The identity of a specimen from the Herbarium Jany Renz Botanical Institute, University of Basel, Switzerland, corresponds to the same hybrid described here and erroneously determined as Gongora saccata, a synonym of Gongora seideliana, is considered. The clarification of the synonymy of Gongora saccata and relevant aspects regarding the pollination mechanisms and reproductive barriers of both parent species are also discussed.
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Two new species of Pleurothallis (Pleurothallidinae) subsection Macrophyllae-Fasciculatae from The Central Andes of Colombia
Two new species of Pleurothallis subsection Macrophyllae-Fasciculatae are described and illustrated. Both species were found in the central Andes of Colombia in the department of Tolima. The two species are compared and discussed with Pleurothallis applanata, Pleurothallis ariana-dayanae, Pleurothallis paquishae, and Pleurothallis scabrilinguis, which are the morphologically closest species. The two new species differ from their congeners mainly by lip morphology. Pleurothallis franciana is distinguished by having an oblong-lanceolate, acute, vesiculous lip with an obovate glenion, and Pleurothallis petroana is distinguished by the ovate-lanceolate, verrucose-papillose, slightly pilose lip, with a spathulate glenion.
checklist to the orchids of Biligiri Rangaswamy Temple Tiger Reserve, Western Ghats, India
This paper provides a comprehensive account of the orchid diversity in the Biligiri Rangaswamy Temple Tiger Reserve (BRTTR), Karnataka, India. A total of 97 orchid species belonging to 33 genera were documented. This includes 50 terrestrial and 47 epiphytic orchids, including one mycoheterotrophic orchid, Epipogium roseum, and a climbing leafless Vanilla walkerae. Additionally, 39 endemic orchids were documented during the study. The evergreen forests provide the most habitable conditions for the orchids in BRTTR. The present study adds 26 species to the orchid flora of BRTTR. About 49% of the orchid flora of Karnataka state and 32% of orchids of Western Ghats is found in BRTTR, making this area a microcenter for orchid diversity.
Orchids of the Southern Cone (1830–2000) – Part II. The Philippi dynasty: Plantarum Novarum Chilensium and Catalogus Plantarum Chilensium
Bernhard Eunom Philippi (1811–1852), his brother Rudolph Amandus Philippi (1808–1904), and the latter’s son Federico Philippi (1836–1910) must be considered the main actors in the history of the natural sciences in Chile between 1840 and 1910. While Bernhard was responsible for convincing the rest of his family to emigrate to Chile (and in fact, became the initiator of German immigration to southern Chile), Rudolph became the leading Figure in Chile’s scientific community, becoming the first director of the National Museum of Natural History, a post he held from 1853 to 1897. The description of many new orchid species in the series Plantarum novarum Chilensium (1856–1864) during this time is only one of his merits. His son Federico took over the direction of the Museum after his father’s retirement until he died in 1910. Catalogus plantarum Chilensium (1881) stands out among his numerous publications.
Potential drivers of spatial distribution of the ghost orchid, Dendrophylax lindenii, in a South Florida cypress strand: a preliminary study
This study examined a population of ghost orchids (Dendrophylax lindenii) in Fakahatchee Strand Preserve State Park in Collier County, Florida, to determine if they exhibit host species preference, vertical stratification, substrate diameter stratification, or a distribution pattern similar to their host plants. Twenty-five ghost orchids were found on three host plant species: 20 (80%) were on pop ash (Fraxinus caroliniana), four (16%) on arthritis vine (Hippocratea volubilis), and one (4%) on pond apple (Annona glabra). Our analysis indicated a statistically significant occurrence of ghost orchids on pop ash relative to other woody plant species in the study area. Although most orchids were found below 3 m from the forest floor, this was not statistically significant when compared to orchids above 3 m. A weak trend (p=0.06) for increasing occurrence was observed in the next to largest (14.1 cm to 17.2 cm diameter at breast height) size class among the five size classes of pop ash in this study. The spatial analyses indicated that both the stems of pop ash and ghost orchids demonstrate non-random clumping on the landscape. In addition, the presence of an individual orchid increases the probability of multiple ghost orchids on a stem. These results further emphasize the importance of pop ash as a host species in Florida’s ghost orchid populations and add to the list of hosts (arthritis vine) in the literature. Continuing to study the vertical position of ghost orchids will be important as climate change has the potential to alter humidity patterns and the occurrence of both low temperature events and hurricanes. Improved understanding of host plant preference, microhabitat requirements, spatial distribution, and continued long-term monitoring of population dynamics are critical for the conservation of the ghost orchid.
Two new species of Bulbophyllum from Bhutan
Two new species of Bulbophyllum, namely, B. gurungianum (sect. Biseta) and B. punakhaense (sect. Brachyrantha) are described and illustrated. Bulbophyllum gurungianum is similar to B. brevispicatum and B. sonii but differs strikingly by having pseudobulbs placed distantly on the rhizome, a shorter peduncle, and oblong petals with a ciliated margin. Bulbophyllum punakhaense is morphologically similar to B. farreri, B. thaiorum, and B. mamillatum, but can be easily distinguished by its larger leaves, pseudobulbs distantly placed on the rhizome, longer peduncle, and oblong-lanceolate petals with shortly papillate margin towards the apex. We provide a detailed description of each species, and information on their distribution, ecology, and conservation status.
new Masdevallia (Pleurothallidinae) from the Huanuco region in Peru
A new Masdevallia from the cloud forests of Huanuco, Peru, is described and illustrated. It is morphologically similar to what is considered to be its closest relatives, the sympatric Masdevallia fenestralis and Masdevallia fenestrellata, but differs from both by the lack of translucent fenestrations (“window-like” areas) near the base of the sepals, and by the presence of distinct external ridges of the sepals.
Copyright (c) 2023 Lankesteriana https://creativecommons.org/licenses/by-nc-nd/3.0/cr/
Masdevallia leonor-baeziana (Orchidaceae: Pleurothallidinae): new species from the Andean-Amazonian foothills of Caquetá, Colombia
We describe and illustrate a new species of Masdevallia from the Andean-Amazonian foothills of Caquetá, Colombia. Masdevallia leonor-baeziana belongs to Masdevallia subsect. Saltatrices, within the M. constricta group. It is most similar to M. constricta, but it can be distinguished by the shorter sepals and sepaline tails that do not surpass the tube length, and the shorter, sigmoid-ovate lip. We proposed categorizing the species as Critically Endangered (CR) based on the B and D IUCN red list criteria.
Pinalia elata (Eriinae) — taxonomic and conservation assessments of a lesser-known narrow endemic orchid from Peninsular Malaysia
Pinalia elata is an attractive endemic species of Peninsular Malaysia, known from only six localities within the Titiwangsa mountain range where it is confined to montane vegetation. However, four of these localities are now threatened by anthropogenic factors, raising concerns about the ongoing survival of this endemic species in the wild. Despite efforts to understand the conservation status of Malaysian orchid species, there remains much work to be done, particularly for endemic species confined to remote and mountainous areas. Therefore, this paper provides a detailed morphological description, photographic illustrations for easy identification of the species, and a conservation assessment based on the IUCN Classification Criteria. Morphologically, P. elata can be easily distinguished from the other Pinalia species in Peninsular Malaysia by its erect inflorescences with well-spaced, closed flowers along the apical half, subtended by prominently large purplish-brown bracts. The flowers resemble buds with the labellum hidden by the petals and sepals. A preliminary risk-of-extinction assessment categorizes P. elata as critically endangered, CR A2acd C2a(i) D, according to the IUCN Red List Categories and Criteria.
new species of Lepanthes (Orchidaceae: Pleurothallidinae) to honour “Bachué”, the mythological mother of the indigenous Muisca people.
In an expedition of 341 plots across a large elevation (1,100-3,880 m) and spatial gradient (~270 km) in the eastern cordillera we found a new species of the genus Lepanthes in Santuario de Fauna y Flora de Iguaque, Boyaca, Colombia. We propose L. bachue as a new species. It is most similar to L. papallactae but it can be distinguished by its proliferous plants (vs. non proliferous), the petals with the upper lobe 2.5 mm long, the lower lobe 4.5 mm long, larger than the upper one, and the margins fimbriate (vs. lobes subequal, 4.5 mm long and shortly pubescent) and the lip with the blades oblong, sub-sigmoid, adnate to the middle of the column with a short oblong, bifid, yellow appendix hiding in the middle (vs. blades narrowly elliptical-oblong, connate to the column above the middle with a recurved, pedunculate, biglandular appendix). Our large elevational and geographical sampling suggest that the species is geographically restricted and have high habitat specialization, thus urging to protect its natural habitat and population.
Orchids of the Southern Cone (1830–2000) – Part III. Karl Friedrich Reiche’s Orchidaceae Chilensis and a commentary about Friedrich Wilhelm Ludwig Kraenzlin’s Orchidacearum Genera et Species (Vol. 2, Part I)
Karl Reiche (1860–1929), a German botanist, came to Chile in 1889 as a professor at the Lyceum in the city of Constitución. He was attracted by the country’s climate and its traditional friendliness to German immigrants. A few years later, in 1897, Federico Phillippi, Director of the Museo Nacional de Historia Natural, welcomed Reiche as the new Head of the Botanical Section, a position he held until 1910. During his 21 years in Chile, Reiche worked intensively on the Chilean flora and was a prolific writer. Besides six volumes of the Estudios críticos de la Flora de Chile (1896–1911), several editions of Reiche’s Plant Geography of Chile were published (1907, 1934–1937, 2013), a magnificent essay on Chiles’ Orchidaceae, Orchidaceae Chilensis (1910, reprint 2007), and several other minor works. On Reiche’s suggestion, The Museo Nacional engaged Friedrich Kraenzlin (1847–1934) to write a treatment of the orchids of the Southern Cone that was published in 1904 as the second volume of Orchidacearum Genera et Species, a work that was widely criticized by many botanists, beginning with Reiche himself.
National Museum of Natural History of Chile
Colombian Orchidaceae: A Catalogue of the Pleurothallidinae
Colombia is a major biodiversity hotspot, having one of the richest orchid floras in the world. The country spans over a million square kilometers of land, hosting a multitude of different ecosystems thanks to the complexity of its mountainous systems and influences from neighboring countries in Central and South America, as well as the Atlantic and Pacific coastlines. Prior studies found an estimated 3591–4270 species of orchids occurring in Colombia, making it the most species-rich plant family in the country. About 35% of those orchids are members of the Pleurothallidinae subtribe, the largest group in the family and also that with the highest rate of species discovery. Here we record 1862 species of pleurothallids for the country, a significant increase from the 1286–1529 range estimated just a few years ago. We expect Pleurothallidinae to represent close to half the Colombian orchid flora. Colombia hosts roughly one third of all currently known taxa in the subtribe, and close to 60% of these species are found nowhere else in the world. These are clear indicators that the country is a highly important center of pleurothallid diversity and a key target for their conservation. The most species rich genera in the country are Stelis (521 species), Lepanthes (377 species), Pleurothallis (248 species) and Masdevallia (171 species). Country-level distribution is given for each accepted species. The closest floristic affinity is found with Ecuador, with which Colombia shares over 76% of the non-endemic Pleurothallidinae species, followed in the distance by Venezuela and Peru with just above one quarter of the non-endemics being shared. Numerous new country records are presented in the catalogue, many of which are illustrated with color photographs. We provide a full list of homotypic synonyms for each accepted taxon, as well as an annotated list of excluded taxa and newly proposed synonyms. Heterotypic synonyms are not listed, unless they are based on Colombian material. Typification for each accepted species is presented, with lectotypes, neotypes and epitypes being selected whenever necessary and available, as well as information regarding published illustrations.
Epidendrum edquenii (Laeliinae), a new species from a montane wet forest of the Private Conservation Area La Pampa Del Burro, Amazonas, Peru
A new species Epidendrum edquenii, is described and illustrated from the Private Conservation Area La Pampa del Burro, department of Amazonas, northeastern Peru. It belongs to the informal Takulumena group, characterized by Vanda-like monopodial stems with basal or lateral, successive inflorescences. The new species is distinguished by its non-pubescent, red flowers with green dorsal surface, margins, and apices of the sepals and petals, yellow-green base of column and disc of lip, acuminate sepals 9.5–10.7 mm long, narrowly ovate petals with the margin densely and shortly ciliate, and widely triangular lip, 6.0 × 9.5 mm, with the margin scarcely papillose. A list and an identification key for the previously known species of the Takulumena group are provided. Furthermore, the new name Epidendrum vulcanitungurahuae is proposed to replace the illegitimate combination Epidendrum tungurahuae, predated by E. tunguraguae.
new species of Pleurothallis (Pleurothallidinae) from the southwestern Andes of Colombia in the National Natural Park Farallones de Cali
A new species of Pleurothallis from subsection Macrophyllae-Fasciculatae is described and illustrated. The new species is compared with Pleurothallis folsomii from Panama. Pleurothallis celsia is most similar to a group of species with small, yellow flowers but it can be recognized mainly by its lip, which is widely ovate, the surface and margin pilose and papillate, and the base of the glenion densely vesiculose.
In Peru, Chloraea previously included five species. However, recent field explorations and herbarium specimen revisions have led to the discovery of a new species from northern Peru. Here, we describe and illustrate Chloraea aequatorialis, the species with the most northern distribution recorded for the genus, ranging from 5º50’ to 7º56’ S. The new species closely resembles C. septentrionalis, with which it grows partially in sympatry in the departments of Cajamarca and La Libertad, but it can be easily distinguished by its larger sepals and petals, a lip disc covered by thin, narrow, and long appendages, a longer lip claw, column, and anther, and a shorter stigma. We provide information on the habitat, distribution, and conservation status of the new species, along with an updated description of C. septentrionalis and a key to the Peruvian species of Chloraea.
Copyright (c) 2025 Lankesteriana: International Journal on Orchidology https://creativecommons.org/licenses/by-nc-nd/3.0/cr/
Gastrochilus pechei (Orchidaceae), a new addition to the flora of India
Gastrochilus pechei was recently documented in Vijoynagar, Changlang district, Arunachal Pradesh, India. Identification was based on the spathulate sepals and petals; the acute, sub-triangular, slightly irregularly erose margin of the epichile with a central cushion, and the subglobose hypochile. The species belongs to the section Brachycaules. This report represents a new distribution record for India. An updated description and detailed photographs based on Indian material are provided
Lista comentada de Orchidaceae en Uruguay y su distribución en ambientes y eco-regiones
From an economic and taxonomic point of view, Orchidaceae is one of the most studied botanical families. In Uruguay it is poorly represented and known, and descriptive data are fragmented and scattered. In the present work the information on the species of this family is updated based on herbaria records, previous publications and field trips made in the country during 2018–2019. A list of Orchidaceae from Uruguay is presented with 59 species belonging to18 genera. Four species were found endemic to the country, while 22 species are endemic to the Southern Cone region. The Gondwanic Sedimentary Basin was the ecoregion with the highest species diversity (51%) and the richest departments were Cerro Largo (25 spp.) and Maldonado (25 spp.). The Highland Forest and Riparian Forest environments presented highest diversity. The most representative genera were Habenaria(12 spp.) Cyclopogon(8 spp.) and Brachystele(6 spp.). The species with the widest distribution were Habenaria gourlieana, H. parviflora, and Cyclopogon elatus, which were found in all ecoregions and in 15 out of 19 departments of the country. Key Words: Epidendroideae, Neotropics, Orchidoideae, South America, Southern Cone
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A new Lepanthes (Pleurothallidinae) from South-western Colombia
Se presenta una nueva y atractiva especie de Lepanthes del suroeste de Colombia. Lepanthes faralloneneis pertenece al grupo informal “manabina”, un grupo de especies con hojas cóncavas y comúnmente pubescentes, con flores que descansan sobre el lado adaxial de la hoja y que poseen sinsépalos con caudas que van desde cortas a largas. Lepanthes farallonensis es similar a L. smaragdina en el sépalo dorsal, ampliamente ovado y se diferencia en poseerlos lóbulos superiores de los pétalos conspicuamente retorcidos, doblados hacia afuera y una depresión en la parte media de las láminas del labelo.
Farallones de Cali National Natural Park
Robinson Galindo-Tarazona Robinson Galindo-Tarazona
nueva especie de Pleurothallis (Pleurothallidinae) subsección Macrophyllae-Fasciculatae para la región Andina colombiana
A new species of Pleurothallis that belongs to the Macrophyllae-Fasciculatae from the Colombian Andes region is described and illustrated. The new species is morphologically similar to Pleurothallis callosa from which it can be differentiated by having its dorsal sepal and synsepal ovate-elliptic; petals falcate-lanceolate, acuminate, and the lip quadrangular-ovate with 2 basal calli that extend up to a third the length of the lip (vs. dorsal sepal elliptic and synsepal widely ovate and unguiculate lip with two basal calli that extend up to half the length of the lip in P. callosa). Geographic information, ecological characteristics, and conservation status of the new species are provided.
Mario Alexei Sierra-Ariza Mario Alexei Sierra-Ariza
Milton Rincón-González Milton Rincón-González
Boris Villanueva Tamayo Boris Villanueva Tamayo
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