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357
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Introduction
Robert passed away this week.. on Tuesday, October 15, 2019. at the age of 92. When he could not write or hunt orchids any longer due to declining health, he took great satisfaction in seeing how many people still valued his work and read or downloaded it from this site. Thank you for keeping him relevant and finding value in his life's work.
Current institution
Additional affiliations
January 1984 - present
March 2005 - May 2016
May 2016 - present
Position
- Retired
Description
- May 25, 2016 Robert officially retired from the Lankester Botanical Gardens. One week before his 89th Birthday.
Publications
Publications (357)
Subtribe Spiranthinae is the most species-rich lineage of terrestrial Neotropical orchids, encompassing > 500 species and 40 genera. We conducted maximum parsimony and maximum likelihood phylogenetic analyses of DNA sequence data of plastid matK-trnK and trnL-trnF and nuclear ribosomal ITS sequences for 36 genera and 182 species of Spiranthinae plu...
Sobralia turrialbina is described and illustrated from Costa Rica. The new species is compared with the morphologically similar S. chrysostoma, from which can be distinguished by the leaves restricted to the terminal third of the stem, the floral bracts twice longer, the flowers dusty pink or pale rose, and the lip with no keels, provided with a ha...
En muchas de las charlas, el ponente presenta su charla en inglés para favorecer a los visitantes extran- jeros. En este caso, creo que el material que quiero presentar es de más interés para los visitantes de América Tropical que para los de habla inglesa. En mi experiencia, todos los jardines botánicos, tal vez con excepción de Longwood, hallan q...
To THE SOUTHEAST of Cartago and Paraiso, in Costa Rica, there is a rather primitive road through Gwibata to Cach!o It is better to go up the road through Gwibata, as it is much less frightening than the road from Cachi to Alto de Araya. Near the highest point of the road (Alto de Araya) there is a small lake that is said to be quite deep, and there...
Two new species of Sobralia from Costa Rica are described and illustrated, and their affinities are discussed. Sobralia danjanzenii is compared to S. virginalis, from which it is mainly distinct by the simple stems and the unscented flowers, with the lip blotched with yellow only within the throat. Sobralia zebrina is similar to S. macrophylla, but...
Zusammenfassung: Das exotische Aussehen von neotropischen langpetaligen Frauenschuharten faszinierte die Gärtnerwelt in der zweiten Hälfte des 19. Jahrhunderts aufs Höchste und Arten dieser Gruppe sind seinerzeit in illustrierten Zeitschriften oft gezeichnet und abgebildet worden -meistens unter falschen Namen. Das Durcheinander zwischen dem südame...
The first European botanists to see Phragmipedium caudatum were the spaniards Hipólito Ruiz and José Pavón during their journey to peru in the late 18th century. according to their notes and diaries, they observed populations of Phrag. caudatum around Tarma, at Cuchero and Muña; there is a specimen collected at pillao in their herbarium. While the...
Warczewiczella Rchb.f. is distributed in the Neotropical region and it comprises 11 species. A taxonomic and morphologic study of the genera in Colombia is presented. The techniques used correspond to the classic vegetal taxonomy. This genus is characterized mainly because of its fan-shaped leaves, uniflora inflorescence, conspicuous and eye-catchi...
The long-petaled slipper orchid of Central American has a complex nomenclatural history. Since the first publication of the name Cypripedium humboldtii, this plant has been treated under a number of different synonyms. Here we reconsider the oldest name, suggesting that Warszewicz validly published it, and that the name Phragmipedium humboldtii mus...
Resumen. Sobralia warszewiczii Rchb.f. fue descrita de Panama occidental en 1852. El nombre se ha usado hasta el sur de Mexico, aunque ninguna de las especies con flores lilas o moradas conocidas de Costa Rica concuerda del todo con S. warszewiczii. Una especie que forma colonias grandes en el noroeste de Costa Rica podria ser la misma especie que...
We present a revision of the Mexican and Central American species of Vanilla . There are 15 different species in the area; Vanilla costaricensis, V. cribbiana, V. dressleri, V. martinezii and V. sarapiquensis are here proposed as new taxa, and V. pompona subsp. pittieri and V. pompona subsp. grandiflora are recognized at subspecific rank. Vanilla c...
A new species of Elleanthus: E. carinatus and three new species of Sobralia: S. fragilis, S. geminata from Costa Rica and S. sotoana from Panama are described and illustrated. rEsuMEn: Una nueva especie de Elleanthus: E. carinatus y tres nuevas especies de Sobralia: S. fragilis, S. geminata de Costa Rica y S. sotoana de Panama se describen y se ilu...
Se describen y se ilustran dos nuevas especies y una nueva subespecie de Dichaea Lindley de hojas cáducas de Mesoamérica. Dichaea dressleri Folsom, una especie con hojas estrechas y glaucas, parecida a D. gracillima C. Schweinfurth, se describe de bosques húmedos de Panamá occidental. Dichaea globosa Dressler & Pupulin, conocida de Costa Rica y Pan...
Laeliinae are a neotropical orchid subtribe with approx. 1500 species in 50 genera. In this study, an attempt is made to assess generic alliances based on molecular phylogenetic analysis of DNA sequence data.
Six DNA datasets were gathered: plastid trnL intron, trnL-F spacer, matK gene and trnK introns upstream and dowstream from matK and nuclear I...
Condylago furculifera from Panama is described and illustrated. This species is distinguished from its Colombian relative, C. rodrigoi, by more sparsely villous sepals (vs. densely white-villous); obovate-pan-durate petals without decurrent basal lobes and the ovate (vs. orbicular) viscid callus. The most striking feature, however, is the infloresc...
The taxonomic history of Chondroscaphe and the Chondrorhyncha bicolor group is summarized. Full description, distribution, ecology and taxonomic discussion are provided for each species, and most taxa are illustrated with one or more composite plates. A new species, C. venezuelana, is described and illustrated from the State of Merida in Venezuela....
Elleanthus ligularis is described and illustrated. The flowers of this species are apparently self-pollinating. Fruiting material has been collected in Colombia, Costa Rica, Cuba and Panamá, but the species remained nameless in the absence of flowers, and is here described as Elleanthus ligularis. Costa Rican plants in cultivation have flowered in...
Elleanthus ligularis is described and illustrated. The flowers of this species are apparently self-pollinating. Fruiting material has been collected in Colombia, Costa Rica, Cuba and Panamá, but the species remained nameless in the absence of flowers, and is here described as Elleanthus ligularis. Costa Rican plants in cultivation have flowered in...
Bilingual: Spanish and English
Ornithocephalus aristatus, a new species from Panama, is described and illustrated. Among the species of the genusOrnithocephalus, it can be distinguished by the nonresupinate flowers, the sepals each provided with a flexuous awn half as long as the sepal
itself, the porrect petals with revolute margins, the hastate lip with triangular-ovate, crose...
The new and old species of Genus Epidendrum
There has been widespread taxonomic confusion as to the Central American red-lipped Trichopilias going all the way back to the original descriptions of Trichopilia marginata Henfrey and Trichopilia coccinea Lindl. which differ in nothing other than name. This confusion has been exacerbated by the use of the name Trichopilia coccinea in reference to...
Pseudencyclia is a hodgepodge of diverse species artificially separated from their closest relatives, and thus quite polyphyletic.
The generic synonyms Helcia, Leucohyle, and Pilumna are formally given sectional status within Trichopilia. The features of these sections and two subgroups of Section Trichopilia are discussed.
Bilingual: Spanish and English
The taxonomy of several species of Trichopilia sect. Trichopilia with small, mostly white flowers is discussed. Two new species, T. endresiana and T. tubella, are described and illustrated. Both new species are closely allied to T. turrialbae, but can be distinguished by the smaller flowers and the lateral keels of the lip subequally branched to cl...
The new and old species of Epidendrum
The new species of Epidendrum
The phylogenetic relationships of the orchid subtribe Zygopetalinae were evaluated using parsimony analyses of combined DNA sequence data of nuclear ITS 1 and 2 (including the 5.8s region and portions of the flanking 18s and 26s regions) and of the plastid trnL intron plus the trnL-F intergenic spacer and the plastid matK. Analyses of the three sep...
Se evaluaron las relaciones filogenéticas de Telipogon, Ornithocephalus y géneros afines (Orchidaceae: Oncidiinae) mediante análisis de parsimonia de datos de espaciadores de ADN ribosomal nuclear (nrITS) y de tres regiones de ADN de plastidios (matK, trnL-F y la región espaciadora intergénica atpB-rbcL). Además de un análisis de 81 OTU con ITS, se...
In the 1980s, careful estimates of the size of the Orchidaceae clustered around 19,000. A new provisional checklist suggests 24,500 species of orchids, approaching the "improbable maximum of 25,000," as seen by John Atwood. Recent lists from Mesoamerica agree closely with the 20% increase indicated by the provisional list. Will the next two decades...
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Se validan los nombres de cuatro especies de Malaxis descritas como nuevas sin diagnosis latina en Selbyana 24(2), 2003.
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Sequences of the nuclear ribosomal internal transcribed spacer regions 1 & 2 (nrDNA ITS) including the intervening 5.8S region
were analyzed cladistically for 43 individuals of 35 species ofScaphyglottis s.l. plus two outgroup taxa. Low levels of sequence divergence do not allow estimation of relationships among most clades,
but the analyses indica...
Bilingual: German and English
Bilingual: German 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...
The new and old species of orchids in Mexico
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Molecular systematics, the comparison of DNA sequences, has brought a continuing revolution to plant taxonomy. In most cases, the results are intu- itively reasonable, even when they demand changing long-known names.
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Se describen, ilustran y comentan dos nuevas especies de la subtribu Stanhopeinae: Coryanthes kaiseriana , de Costa Rica y Panamá, y Paphinia vermiculifera de Panamá.
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Brassia gireoudiana Rchb.f. is treated as a subspecies of B. verrucosa Lindl. because of apparent hybridization in Costa Rica. Trichocentrum stipitatwn (Lindl.) Chase & N.H. Williams is treated as a subspecies of T. nudum (Batem. ex Lindl.) Chase & N.H. Williams because of an area of intergradations in the Perlas Archipelago and Panamá province. Re...
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Hay varios especímenes de una Sobralia de la Sección Globosae colectados en Costa Rica, pero no se han podido identificar con certeza por la mala conservación de las flores. Ahora la floración de una p l a n t a e n e l J a r d í n B o t á n i c o L a n k e s t e r p e r m i t e l a d e s c r i p c i ó n d e l a p...
Four new species of Malaxis have appeared during preparation of the Flora Mesoamericana and are described and illustrated. Malaxis brevis is a small-flowered species collected several times in western Panama. It resembles M. hastilabia, but the much smaller flowers have a very short lip with short cavities. Malaxis insperata, from Nicaragua, superf...
Bilingual: Spanish and English
Bilingual: Spanish and English
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S e d e s c r i b e u n a n u e v a e s p e c i e , O n c i d i u m z e l e n k o a n u m , d e P a n a m á o c c i d e n t a l . P a r e c e s e r u n a especie aislada, sin parientes cercanos conocidos en Centroamérica. Las alas de la columna tienen lóbulos su-bulados, porrectos, que recuerdan las “aristas” o “ci...
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Se describen e ilustran Govenia viaria , de Monteverde hasta el área de Dota, y Palmorchis eidae , del área de Golfito, y se describe Dichaea elliptica , de Panamá y del sur de Costa Rica. Se pu- blica una nueva combinación para Chondroscaphe endresii , una especie distinta que se ha confundido con C. bicolor . Un...
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Se presenta una discusión de las secciones o grupos de Sobralia , basada en las secciones nom- bradas por Brieger. Se describen cuatro especies nuevas de Panamá y Costa Rica: S. gloriana , una especie escasa y muy llamativa del área de El Valle de Antón, pariente de S. atropubescens pero de flores más grandes y de...
The new species of Genus Epidendrum
The following new species have appeared during the preparation of the Flora Mesoamericana and are described and illustrated here: Cischweinfia nana, a very small-flowered species with rhombic lip; Oncidium allenii is closely allied to O. klotzschianum Rchb. f., but has the base of the lip orbicular, rather than broadly triangular; Oncidium punctula...
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Se describe Stellilabium erratum , una especie de Tapantí y el valle del Río Pejibaye, de planta y flores relativamente grandes para el género. La columna y el labelo son trilobados y los lóbulos laterales de la columna llevan setas conspicuas.
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