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  • Ítem
    On the identity of Myoxanthus scandens (Orchidaceae: Pleurothallidinae), with a new species from Costa Rica
    (Universidad de Costa Rica, 2010) Pupulin, Franco; Bogarín Chaves, Diego Gerardo; Fernández Campos, Melania
    We present and illustrate a new species of Myoxanthus from Costa Rica, closely related to M. scandens. We present descriptions and illustrations of both species. The new species, Myoxanthus sotoanum differs from M. scandens, by its linear leaves, the brownish-yellowish flowers, the yellow petals and lip, the oblong, obtuse, subfalcate lateral lobes of the lip, the two keels extending nearly to the middle of the lip, and the shorter, triangular, acute teeth that flank the stigma. Myoxanthus sotoanum generally also occurs at lower elevations than M. scandens.
  • Ítem
    New species and records of orchidaceae from Costa Rica. III
    (Universidad de Costa Rica, 2014) Fernández Campos, Melania; Karremans Lok, Adam Philip; Jiménez, Daniel
    The establishment in Costa Rica of the great naturalist Charles H. Lankester in the 19th century brought a tremendous increase in the knowledge of Costa Rican Orchidaceae. His desire to leave the collections kept at his farm for a scientific and educational purpose was finally accomplished in 1973 with the foundation of Lankester Botanical Garden (JBL). Since then, JBL has followed Lankester’s legacy with its consolidation as a leading center for the study of Neotropical orchids, resulting among others in more than 180 new Costa Rican species and records in the last 12 years. This manuscript includes the description of four new species and seven new records, as part of JBL’s contribution to the completion of the Costa Rican orchid inventory.
  • Ítem
    A new species of Stellilabium section Taeniorhachis (Orchidaceae) from Costa Rica
    (Universidad de Costa Rica, 2002) Pupulin, Franco; Blanco Coto, Mario Alberto
    The new species Stellilabium smaragdinum is described and illustrated from the montane oak forests of the Cordillera de Talamanca, Costa Rica. Among the species of Sect. Taeniorhachis, S. smaragdinum may be recognized for the inflorescence bearing 1-3 (4) simultaneous flowers, the oblong to ovoid, rounded basal lobules of the lip, the non-ciliate margins of the lip midlobe and the peculiar colour of the column setae, cream banded with purple.
  • Ítem
    Lepanthes gerardensis (Orchidaceae), una nueva especie de Costa Rica
    (Universidad de Costa Rica, 2003) Blanco Coto, Mario Alberto
    Lepanthes gerardensis from north-central Costa Rica is described and illustrated. It is most similar to the Mexican L. ancylopetala Dressler, from which it differs in shorter habit, petiolate leaves with broadly elliptic blades, and different lip shape. It appears to be a specialized twig-epiphyte.
  • Ítem
    Notes on the natural history of Cyclopogon obliquus (Orchidaceae: Spiranthinae) in Costa Rica
    (Universidad de Costa Rica, 2002) Blanco Coto, Mario Alberto
  • Ítem
    Generic realignments in Maxillariinae (Orchidaceae)
    (Universidad de Costa Rica, 2007) Blanco Coto, Mario Alberto; Carnevali Fernández-Concha, Germán; Whitten, W. Mark; Singer, Rodrigo B.; Koehler, Samantha; Williams, Norris H.; Ojeda, Isidro; Neubig, Kurt M.; Endara, Carmen Lorena
    Un reciente análisis filogenético de cuatro regiones de ADN para ca. 354 especies de la subtribu Maxillariinae indican fuertemente que el género Maxillaria, en su circunscripción tradicional, es altamente polifilético. Presentamos una nueva clasificación filogenética para Maxillariinae que reconoce 17 géneros. Los cambios necesarios incluyen: 1) la resurrección de los géneros Camaridium, Heterotaxis, y Ornithidium; 2) el reconocimiento de los recientes segregados genéricos Brasiliorchis (=Maxillaria sección Repentes), Christensonella (=Maxillaria sección Urceolatae), Nitidobulbon (en prensa), y una Sauvetrea recircunscrita (=Maxillaria sección Trigonae); 3) la adopción de los nuevos géneros Inti (=Maxillaria sección Polyphyllae), Mapinguari, Maxillariella (=Maxillaria secciones Ebulbes y Erectae), y Rhetinantha; 4) transferencias de Maxillaria sección Reflexae a Ornithidium, y Maxillaria sección Rufescens a Mormolyca; y 5) puesta en sinonimia de los géneros Adamanthus, Pseudomaxillaria, Psittacoglossum y Sepalosaccus (bajo Camaridium), Anthosiphon (bajo Cryptocentrum), Chrysocycnis (bajo Mormolyca), Dicrypta, Marsupiaria y Pentulops (bajo Heterotaxis), y Laricorchis, Neo-Urbania, y Siagonanthus (bajo Ornithidium). Algunos sinónimos nuevos al nivel de especie también son presentados.
  • Ítem
    Lankesteriana a no impact journal... or is it?
    (Universidad de Costa Rica, 2016) Karremans Lok, Adam Philip
    The word impact comes from the Latin impactus, to push against. It is defined by the Merriam-Webster dictionary as, among others, “to have a direct effect on”. In the realm of scientific publishing, impact is measured in the sense of the journal Impact Factor (IF). The IF is calculated by “considering all citations in 1 year to a journal’s content published in the prior 2 years, divided by the number of substantive, scholarly items published in that journal in those same 2 years”. In other words, impact is defined as the direct effect in one year of the journal’s content published the two preceding years. Easy and fair enough. Nevertheless, the Impact Factor has a copyright, and this mathematical calculation can be officially done only by one private entity, Thomson Reuters. And things go downhill from there.
  • Ítem
    Lankesteriana, a new genus in the Pleurothallidinae (Orchidaceae)
    (Universidad de Costa Rica, 2014) Karremans Lok, Adam Philip
    We estimated phylogenetic relationships within Anathallis and related genera using Bayesian analyses of nrITS sequence data. The genus is biphyletic in the molecular trees. A novel generic concept, Lankesteriana, is proposed for the species Anathallis barbulata and 19 close relatives. The genus is more closely related to some species of Trichosalpinx and Zootrophion than to Anathallis s.s. Species previously transferred from Pleurothallis subgen. Acuminatia sect. Acuminatae to Anathallis, are here transferred to Stelis, to which they are related phylogenetically. A few additional transfers to Anathallis are made. Lankesteriana is described and characterized, and the necessary taxonomic transfers are made
  • Ítem
    A new Stelis (Orchidaceae: Pleurothallidinae) from the western Andes of Colombia
    (2020) Reina Rodríguez, Guillermo Alberto; Karremans Lok, Adam Philip; López Machado, Francisco; Cruz Salcedo, Jimena
    Stelis excentrica, a new species endemic to the Cauca slope of the western Andes, municipality of Cali, Valle del Cauca, Colombia, is described and illustrated. It was found in the northern part of the Farallones de Cali National Park, in the vicinity of the protected area “El Danubio” administered by the Cali mayoralty. Stelis excentrica is similar to Stelis gigantissima from Ecuador but differs in the ocher-green flowers (vs. dark purple), the reniform petals (vs. flabellate petals), subquadrate lip with a minute apicule (vs. subcuneate without apicule). Reaching up to 30.6 mm from the apex of the dorsal sepal to the apex of the lateral sepal, Stelis excentrica probably has the largest flowers reported in any member of Stelis subgen. Stelis. Its 60 cm long inflorescence is only rivaled by that of Stelis gigantissima. Ecological notes, in situ photographs, typus illustration, maps, and a composite plate are provided.
  • Ítem
    A reappraisal of Neotropical Vanilla. With a note on taxonomic inflation and the importance of alpha taxonomy in biological studies
    (2020-12-23) Karremans Lok, Adam Philip; Chinchilla Alvarado, Isler Fabián; Rojas Alvarado, Gustavo; Cedeño Fonseca, Marco Vinicio; Damian Parizaca, Landy Alexander; Léotard, Guillaume
    Despite the long-standing cultural importance and botanical interest in Vanilla, many taxa belonging to the genus remain poorly understood. Vanilla species generally have broad geographical and ecological distributions. Most species are found in multiple countries, while local endemics are rare. Many names proposed in the eighteen and nineteenth centuries remain cryptic and unused despite having priority over more recently proposed names. Relatively few Vanilla species have been well-documented, both locally and across their entire distribution range, while a significant portion of novelties have been proposed on the basis of very few specimens that are compared only with local floras. After careful inspection of the type materials, living plants, botanical illustrations, photographs and hundreds of additional herbarium specimens of Vanilla we tentatively recognize 62 species for the Neotropics. The taxonomy of Vanilla columbiana, V. hartii, V. inodora, V. karen-christianae, V. marowynensis, V. mexicana, V. odorata, V. phaeantha, V. planifolia, and V. pompona is revised. An updated typification, description, photographs, illustrations, list of studied specimens, distribution map, extent of occurrence and discussion is provided for each of the ten species. Taxonomic proposals include 28 new synonyms, 14 lectotypifications, and one neotypification. We stress on the importance of alpha-taxonomy for biological studies, emphasizing on the detrimental effects of taxonomic inflation and incorrect species determination on the inference of speciation rates, the understanding of biogeographical patterns, the correct estimation of ecological niches, seed dispersal studies, phylogenetic and genomic studies, and the assessments of conservation priorities, among others. Finally, the recently proposed genus Miguelia is placed under the synonymy of Vanilla.
  • Ítem
    A new Lycaste (Orchidaceae: Maxillariinae) from Costa Rica
    (Universidad de Costa Rica) Bogarín Chaves, Diego Gerardo
  • Ítem
    Encyclia cajalbanensis (Orchidaceae), una especie nueva de la flora cubana
    (Universidad de Costa Rica) Mújica Benítez, Ernesto; Bocourt Vigil, José; Pupulin, Franco
  • Ítem
    Diversidad de orquídeas de los bosques altos de la Serranía de los Paraguas, Chocó Biogeográfico, Colombia
    (Universidad de Costa Rica) García Ramírez, Duvan A.; García Revelo, J. Santiago
  • Ítem
    La aventura europea del Epidendrum radicans
    (Universidad de Costa Rica) Ossenbach, Carlos
  • Ítem
    Un homenaje al estudio de las epífitas
    (Universidad de Costa Rica) Warner Pineda, Jorge
  • Ítem
    What will be left of the primary forest in Ecuador?
    (Universidad de Costa Rica) Hirtz, Alexander
  • Ítem
    Stanhopeinae Mesoamericanae. I
    (Universidad de Costa Rica) Gerlach, Günter; Dressler, Robert L.
  • Ítem
    El grupo epidanthus, subgrupo selaginella de epidendrum
    (Universidad de Costa Rica) Hágsater, Eric; Santiago Ayala, Elizabeth