Stig Dalstrom

• National Biodiversity Centre, Thimphu, Bhutan; Lankester Botanical Garden, University of Costa Rica

Eulophia muktangkharensis, eine neue und attraktive Eulophia aus dem östlichen Bhutan Eulophia muktangkharensis, a new and attractive Eulophia from eastern Bhutan Abstract: A new species of Eulophia (cymbidiae: Eulophii-nae) from the Trashigang district in Bhutan is described and illustrated with color photos. The new species is compared with Eulop...

We report Cyrtosia javanica as a new record, an addition to the orchid diversity of Bhutan. Cyrtosia javanica is a myco-heterotrophic terrestrial orchid.

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 sepal...

A new and previously little-known Cyrtochilum (Orchidaceae: Oncidiinae), is named in honor and in memory of Leonore Bockemühl, who published a monographic treatment of Odontoglossum in 1989, which included many species that subsequently were transferred to Cyrtochilum based on molecular evidence. One of these species that was included in her treatm...

A new species of Chiloschista from a restricted area in Bhutan is described and illustrated. It is featured with color photos and a map showing its only known locality. The new species is compared with the other three spotted Chiloschista species from Bhutan: C. densiflora, C. gelephuense, and C. himalaica, which have similarly colored flowers, but...

A new small-flowered Cyrtochilum from Peru is described, illustrated with photos and drawings, and compared to similar species. The new species is similar to C. fidicularium and C. gracile in having extra thumb-like projections above the rounded ventral lobes of the column but differs from C. fidicularium by the more sharply pointed and forward pro...

Species Orchidacearum 5-Icones Colombianae 5 Cyrtochilum amphiglottis (Rchb.f.) Dalström Lankesteriana 20(1): 26. 2020 Terrestrial herb, caespitose, up to 50 cm tall without the inflores-cence. Pseudobulbs ovoid, bifoliate, 3.5-5.0 × 2.0-3.0 cm, mostly hidden by foliaceous bracts. Leaves conduplicate, linear to narrowly lanceolate 25-45 × 2.3-3.5 c...

The genus Cypripedium L., in Bhutan is currently represented by five very different looking but in various combinations sympatric species: Cypri- pedium cordigerum D.Don, Cypripedium elegans Rchb.f., Cypripedium guttatum sw., Cypripedium himalaicum Rolfe and Cypripedium tibeticum King ex Rolfe. The genus itself is widespread over the entire Norther...

Describes the genus Arachnis (Esmeralda) in Bhutan.

Species new and old in Epidendrum

Two new spotted species of Chiloschista from Bhutan are described, illustrated, and compared with similar species. The second of the new species has been misidentified in previous publications as C. lunifera and C. parishii, and a comparison between the three is provided. It is also compared with C. glandulosa, which is a distinctly smaller-flowere...

A new and unusual-looking Cyrtochilum species is described, compared with the possibly closely related Cyrtochilum leucopterum and illustrated by drawings and a photograph of the holotype. It is distinguished from Cyrtochilum leucopterum by having an elongate basal portion of the lip with erect lateral lobes, and a trilobed front lamina with a glab...

A new species of Chiloschista Lindl. from western Thailand is described and illustrated with a line drawing and photographs. It is compared with the sympatric C. parishii Seidenf., from which it differs in having larger flowers, which are 11–12 mm across versus 8–10 mm across for C. parishii. The new species also distinctly differs in having widely...

The genus Spathoglottis in Bhutan

A new small-flowered species of Cyrtochilum from the isolated range of the Condor mountains in Ecuador is described and illustrated with a line drawing and a photograph of the holotype. It shares morphological features with several different-­looking groups of Cyrtochilum, such as the two generitypes of the genus: C. undulatum and C. flexuosum, as...

Icones Colombianae aims to promote broad and unrestricted public access to the scientific knowledge on biodiversity. Through this initiative, the work of different local researchers and orchid enthusiasts is made freely available and easily accessible online to the whole community. The interest that people from the communities where the orchids gro...

Species Orchidacearum is a serial publication. It is published in volumes, freely available online, and peer-reviewed. Icons from any author are received, they may treat any species of the Orchidaceae family, from any country, previously published or not, as long as they comply with the author’s instructions. The main goal of the series is to make...

Epiphytic herb, 12-16 cm tall. Roots 1 mm wide. Pseudobulbs caespitose, ancipitous, ovoid 18-20 × 15 mm, surrounded basally by few articulate foliaceous sheaths. Leaves subpetiolate, condu-plicate, elliptic, obtuse, 80-120 × 15-18 mm. Inflorescence axillary from the base of the uppermost sheath, erect, to 18-20 cm long, with a dense few-flowered cl...

Two species, originally described as Odontoglossum amphiglottis and Odontoglossum sodiroi are here transferred to Cyrtochilum (Orchidaceae: Oncidiinae), based on molecular data and morphological features, accompanied by brief discussions about their taxonomic background and natural history, and illustrated with line drawings and photographs. Both s...

A new golden yellow small-flowered species of Cyrtochilum is described and illustrated with a line drawing and photographs. It is compared with superficially similar species in the C. aureum complex, in which the new species differs by the lack of lacerate column wings typical for that group. It is distinguished from all other known small-flowered...

Traditionally, orchid taxonomists have focused on a few morphologic features when defining species and genera, usually associated with some flower details. In the case of the genus Odontoglossum it has mostly meant the angle between the column and the lip. As a result, species with similar looking flowers have ended up in the same genus despite dis...

The genus Diplomeris in Bhutan.

Paphiopedilum fairrieanum, P. spicerianum, and P. venustum (Orchidaceae: Cypripedioideae) are reported to occur in Bhutan, of which the former is known to be Critically Endangered and the latter two are Endangered. Based on numerous field trips conducted over the last decade, populations of P. fairrieanum and P. venustum were located in Bhutan. No...

Paphiopedilum fairrieanum, P. spicerianum, and P. venustum (Orchidaceae: Cypripedioideae) are reported to occur in Bhutan, of which the former is known to be Critcally Endangered and the later two are Endangered. Based on numerous feld trips conducted over the last decade, populatons of P. fairrieanum and P. venustum were located in Bhutan. No indi...

A new species of Chiloschista from a restricted area in Bhutan is described and illustrated. It is compared with C. parishii from Myanmar and Thailand, which has similarly colored flowers and from which it differs by the larger flowers, 15–18 mm versus 8–10 mm, and the lack of a glandular and pubescent, erect and curved callus lobe inside the lip,...

A new small-flowered natural Odontoglossum hybrid from northwestern Ecuador is described and illustrated with a line drawing and a photograph. The novelty is compared with its sympatric parent species, Odontoglossum armatum and O. mirandum. The flower of the new natural hybrid has shorter erect lateral lip-lobes compared to those for O. mirandum, b...

A new species of Cyrtochilum from the Eastern Cordillera of Colombia is described and illustrated. The new species is most similar to the pink-flowered Cyrtochilum distans but is distinguished by its white and yellow-green flowers with spreading sepals and a pink lip with a basally yellow and apically white callus consisting of two parallel keels (...

Many attempts have been made by various authors to solve the complicated taxonomy in subtribe Oncidiinae in general and to delineate the genus Odontoglossum KUNTH in particular, but without Iasting or entirely convincing results; KUNTH (1816), UNDLEY (1852), BEER (1854), PFITZER (1887), BOCKEMÜHL (1989), CHASE et al. (2008), PRIDGEON et al. (2009),...

Mitteilungen Umkombination zu Odontoglossum aufgrund morphologischer Merkmale (Orchidaceae; Oncidiinae) Transfers to Odontoglossum based on Morphology (Orchidaceae; Oncidi-inae) Zusammenfassung: Drei Oncidium-Arten aus Panama werden hier in die Gattung Odontoglossum überführt. Dieser Transfer erfolgt aufgrund morphologischer Merkmale, ist aber ohne...

A new, attractive and morphologically unique species of Spathoglottis is described, illustrated and compared with the most similar species. The new species is currently only known from two localities in southeastern Bhutan and differs distinctly from its closest relative, Spathoglottis hardingiana, by the glabrous pedicels, forward-curved acuminate...

Species Orchidacearum is a serial publication. It is published in volumes, freely available online, and peer-reviewed. Icons from any author are received, they may treat any species of the Orchidaceae family, from any country, previously published or not, as long as they comply with the author’s instructions. The main goal of the series is to make...

Conservation, Travelling and Discovering new things ...

A new and attractive but little-known Cyrtochilum (Orchidaceae: Oncidiinae), which was previously misidentified as Cyrtochilum aemulum, is named in honor of the 95th birthdays of Carlyle August and Jane Hortense Pfeiffenberger Luer of Sarasota, Florida, the most prolific orchid research couple the world has ever known. The background of how the aut...

Presents 100 new records of orchid species in Bhutan

A new and showy Masdevallia from the Huanuco region in Peru is described and illustrated with a line drawing and color photographs. It belongs to the subgenus Masdevallia, section Masdevallia. The new species is compared to several more or less morphologically similar species, such as M. burianii, M. cranion and M. popowiana that appear to be close...

A new species of Oliveriana is described and illustrated. It is compared with and distinguished from all other listed members of the genus by a unique combination of distinct features, such as the extremely elongate and narrow leaves, and a flower with a fleshy triangular lip. It is speculated here that this new species may be self-pollinating due...

A generic transfer of eight species from Oncidium to Odontoglossum is made here, supported by molecular and morphologic evidence. Homotypic synonyms are listed. These transfers make it possible to maintain a monophyletic genus Odontoglossum without creating any new generic names. Quotes from authors that favor a larger and morphologically indefinab...

div class="page" title="Page 1"> S e d e s c r i b e y s e i l u s t r a u n a n u e v a e s p e c i e d e l E c u a d o r , S o l e n i d i u m p o r t i l l a e ( O r c h i d a c e a e : Oncidiinae), comparándola con las otras dos especies aceptadas en el género. Se presenta una breve historia del género y se proporciona una clave de las especie...

div class="page" title="Page 1"> When initiating a project in plant taxonomy it is necessary to carefully examine the type specimen for each taxon that has been described. Just as important, however, is to explore the natural habitats of the plants because that is where the dynamics occur, which is the logical source for the necessary data. </di...

div class="page" title="Page 1"> Scaphosepalum manningii , previamente conocida solo por una única recolecta de Venezuela, fue recién descubierta en la reserva forestal Boracayan, en el suroeste de Costa Rica. La especie es ilustrada y comparada con Scaphosepalum clavellatum , una especie estrechamente relacionada y talvéz simpátrica. </div

Three new species of Masdevallia, subgenus Masdevallia are described, illustrated with line drawings and color photographs, one dwarf species in section Coriaceae and two attractive and rather large species in section Masdevallia. The former section is also treated as the genus Byrsella by Luer (2006). All three new species are distinguished by uni...

The Long Pine Key area of Everglades National Park (Florida) is critical habitat for a large number of rare plant species including two candidates for federal listing and several dozen listed as endangered or threatened by the state of Florida. In addition, there are nineteen species present in the Long Pine Key area that are critically imperiled i...

A new species of Odontoglossum from a limited area in western Ecuador is described, illustrated with a line drawing and color photographs, and compared with apparently closely related species, which are illustrated with color photographs. The new species differs from them all by a combination of features, such as the limited geographic distribution...

Two new species of Masdevallia, subgenus Pygmaeia, section Amaluzae are described, illustrated with line drawings and color photographs, and compared with similar taxa. The two new species are sympatric and share many morphological characteristics, but differ from each other through features such as pubescent sepals versus glabrous sepals, size and...

A new and previously misidentified, small-flowered Cyrtochilum (Orchidaceae: Oncidiinae) from central Ecuador is described, illustrated with a line drawing and photographs, and compared with the species that it has previously been taxonomically mixed-up with by the author. The new species is readily distinguished by the dark yellow, gibbous and car...

The genus Vanda Jones ex R.Br., in Bhutan is currently represented by a handful of what must be considered as " disputed " species where the status of all taxa have been questioned in both past and present by various authors for various reasons. The generic name Vanda was proposed in 1795 by William Jones in asiatic Researches but it was not linked...

The plant that was first called "Odontoglossum wyattianum" by Gurney Wilson was exhibited at a meeting of the Royal Horticultural Society on January 3, 1928. No official description was ever published and no type specimen was ever designated, or has surfaced, hence making this distinct species a taxonomic 'ghost'. The taxonomic validation of Odonto...

Three new Masdevallia species are described, illustrated and compared with similar species. A brief taxonomic discussion is held about the justification for describing the new taxa as Masdevallia and not as belonging to any of the recently proposed segregated genera. The first species is most similar to M. rimarimaalba but differs in having a more...

Plants of a colorful Odontoglossum were recently found by separate parties in the Cusco region of central Peru. The species was incorrectly identified as Odontoglossum epidendroides, independently by both parties. Although similar in appearance, a closer examination of the flower reveals that it represents a new species, which is scientifically des...

A new species of Odontoglossum with an extraordinary long column and filamentose lip callus is described, illustrated with a photograph and a line drawing, and compared with similar and presumably closely related species, such as O. epidendroides and O. juninense. The new species belongs to the Odontoglossum complex with a flexible lip-base attachm...

Three new Cyrtochilum species from Peru that are endangered by habitat destruction, are here described, illustrated and compared with similar species.

During ongoing research on the genus Cyrtochilum Kunth in the Venezuelan Andes, two new species have been found, which are described, illustrated and compared with similar species here.

A new species of Cyrtochilum from the isolated region of Sierra Nevada de Santa Marta in Colombia is described and illustrated, and compared with similar species. It is distinguished from other Cyrtochilum species by the violet color of the sepals and petals, in combination with the pandurate lip lamina with a large and protruding nose-like central...

Resumen Three new small-flowered Cyrtochilum species from Colombia and Peru are here described, illustrated and compared with similar species, and with one new taxonomic combination. The first species differs from all other Cyrtochilum species by the curved horn-like structures on the lip callus. The second species differs from its most similar re...

Resumen A previously misidentified species of Odontoglossum (Orchidaceae, Oncidiinae), from the botanically well explored western slopes of mount Pichincha in Ecuador is described and illustrated, and compared with similar species. The new species is most similar to O. cristatum, but differs in a larger plant habit with larger flowers that present...

A new species of Cyrtochilum from Antioquia, Colombia, is described and illustrated, and compared with the similar Ecuadorian C. cryptocopis and C. trifurcatum , but differs in having a different ventral structure and much narrower wings of the column, and also by the much broader frontlobe of the lip.

The orchid genus Chamaegastrodia was established in the Botanical magazine (Tokyo) by the Japanese botanists Fumio Maekawa and Tomitaro Makino (1935). The genus is based on a collection made in August 1889 by s. Matsuda, from the Kawachi Province on the shikoku island of Japan. A plant without flowers had also been found by Makino prior to the Mats...

Despite being one of the smallest nations, Bhutan has a rich and diverse orchid flora. the Thunder Dragon Orchid Conservation project (TDOCP) is administrated by the National Biodiversity Centre (NBC), which is a nondepartmental organization under the ministry of agriculture and forests, located in Thimphu. The aim is to survey remote and previousl...

Oncidium koechliniana, de flores diminutas, presenta una combinacíon de características únicas que justifica su transferencia, así como de todas las especies aquí aceptadas de los géneros Cochlioda y Solenidiopsis a Odontoglossum, transferencias que se hacen en este artículo. La características distintiva para separar Odontoglossum de Oncidium está...

With publication of the latest volume of the Flora of Ecuador in September 2010, there are now 10 new Cyrtochilum species.

The new and old species in Epidendrum

The new and old species in Epidendrum

This article is a clarification of the misapplied use of the name Gongora quinquenervis Ruiz & Pav. for a horticulturally known but scientifically undescribed Gongora (Orchidaceae; Stanhopeinae) from Costa Rica, which is here described and illustrated.

A large-flowered and spectacular, horticulturally known but scientifically undescribed Catasetum (Orchidaceae: Catasetinae) from Peru is described, illustrated, and compared with similar species.

A distinctive small-flowered Cyrtochilum (Orchidaceae; Oncidiinae) from Peru is described, illustrated, and compared with similar species.

A large-flowered and spectacular, previously known Cyrtochilum (Orchidaceae; Oncidiinae) from Bolivia is described, illustrated, and compared with similar species.

Six Masdevallia (Pleurothallidinae) species from Peru are described, illustrated, and compared briefly with similar species.

Bilingual: Spanish and English

Problems in the identification of Cischweinfia species are discussed, and three recently described species are reduced to synonymy. One new species from Costa Rica, allied to C. pusilla and thrice illustrated but rarely collected, is described as C. donrafae Dressler & Dalström, and a distinctive population from Veraguas Province in Panama is descr...

A new species from Peru, Phragmipedium kovachii in section Micropetalum, is described and illustrated.

A third species of the little known Andean orchid genus Solenidiopsis is described and illustrated. A key to the species is provided.

Two new orchid species in the Oncidiinae, Cochlioda mixtura from Bolivia and Odontoglossum ariasii from Peru, are described and illustrated. Both species belong to what is here referred to as the Cochlioda clade, which includes species of the Odontoglosswn astranthum Linden & Rchb. f. complex and of genera Cochlioda Lindl. and Solenidiopsis Senghas...

A new species from Peru, Odontoglossum platynaris (Orchidaceae: Oncidiinae), is described, illustrated, and contrasted with related species. The morphology of O. platynaris connects species of the subgenus Lindleyana Bockem. with species of the subgenus Erectolobata Bockem., indicating that the separation into subgenera is unjustified. Species in t...