Lankesteriana

Macroclinium chasei (orchidaceae, oncidiinae): a new record for brazil

Abstract We present a new record for Brazil, Macroclinium chasei, until now known only from Bolivia and Peru. A description, illustration and photographs are presented, together with data of geographic distribution, and taxonomical and ecological comments.

Resumo É apresentado o registro de Macroclinium chasei para o Brasil, conhecida até o momento apenas para a Bolívia e Perú. São fornecidas a descrição, ilustração, prancha fotográfica, além de dados de distribuição geográfica, comentários taxonômicos e ecológicos da espécie.

Noctuid Moths as potential hybridization agents for platanthera orchids

Abstract Zoophilous flowering plants communicate with pollinators to ensure pollen transfer. Pin-pointing which species are effective pollinators is not only essential to better understand plant-pollinator networks, but equally so to better understand the potential of hybridization in plant systems, such as in orchids. As a case study, we studied two sympatric populations of the congeneric orchids Platanthera bifolia and P. chlorantha in order to assess their nocturnal pollinators by checking which moth species carried pollinaria, and of which orchid species. Moths carrying Platanthera pollinaria were photographed and identified. The carried pollinaria were identified and counted, and their attachment position on the moth’s head was scored. Based on these observations we show that three species of noctuid moths visited the Platanthera inflorescences. Although Noctua pronuba visited P. chlorantha, only Cucullia umbratica and Autographa gamma turned out to be potential pollinators for both orchid species. As such, we here demonstrate that the latter two noctuids have high potential to facilitate hybridization among these two orchid species, especially so in sympatric populations.

A New and striking spathoglottis (Orchidaceae: Collabiinae), honoring her majesty the queen of bhutan

Abstract 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 apices of the petals, a yellow hypochile of the lip, two pairs of unequal callus “horns” and swellings, and a spirally coiled epichile of the lip, versus a densely pubescent inflorescence and pedicels, a pale purple hypochile, a single pair of erect and clavate, or“bubble-shaped”, callus swellings, and a projecting and narrowly triangular epichile of the lip for S. hardingiana.

A new species of catasetum (orchidaceae: catasetinae) from casanare, colombia

Abstract A new species of Catasetum was found in eastern Colombia, Casanare Department, in the Orinoquía bioregion. The species is described and illustrated, and data associated with its phenology, distribution and conservation status are discussed. The new species, C. lucisuareziae, is related to other species found in the same region, like C. rectangulare and C. callosum, from which it mainly differs by the three-lobed labellum and the presence of two subglobular calli at the base.

Resumen Una nueva especie de Catasetum fue encontrada en el departamento de Casanare hacia el oriente de Colombia, en la bioregión de la Orinoquía. Se describe e ilustra la especie y se estipulan parámetros asociados a su fenología, distribución y estado de conservación. La nueva especie, Catasetum lucisuareziae, es comparable con otras especies que se encuentran en la misma región, como C. rectangulare y C. callosum, pero difiere de ellas principalmente por su labelo trilobulado y la presencia de dos callos subglobulares en la base.

Cuatro nuevos registros de orchidaceae para honduras

Resumen Se reportan cuatro nuevos registros para la orquideoflora de Honduras: Chysis bruennowiana (departamento de Comayagua), Lycaste cruenta var. minor (Ocotepeque), Ornithidium tonsoniae (Comayagua) y Sobralia powellii (Ocotepeque).

Abstract Four new records for the Honduran orchid flora are recorded: Chysis bruennowiana (department of Comayagua), Lycaste cruenta var. minor (Ocotepeque), Ornithidium tonsoniae (Comayagua) and Sobralia powellii (Ocotepeque).

Cypripedium calceolus (orchidaceae) in central russia: a case study for its populations in two protected areas in the republic of mordovia (russia)

Abstract Cypripedium calceolus is considered as one of the flagship plant species of nature conservation. It is legally protected throughout Eurasia. Due to its wide distribution range, this Eurasian species could be considered as Least Concern, Near Threatened, Vulnerable, Endangered or Critically Endangered taxon. We performed an analysis of the status for some C. calceolus populations in Central Russia located in the Republic of Mordovia, with emphasis on populations situated in the federal protected areas. The aim of our study was to asses the modern state and the endangerment of C. calceolus populations. The environment conditions and species composition in five habitats with rare species in Mordovia were compared using phytoindication methods. Changes in stage spectrum and total abundance dynamics in C. calceolus populations over 2011-2016 were estimated and compared with available data from other locations within species’ range. Reproductive ability of populations from the federal protected area, Mordovia State Nature Reserve, were studied. The results showed that C. calceolus grows in three habitat types that differed in environment conditions and floristic composition. Convallaria majalis was the only species registered in all studied locations, together with C. calceolus. In Central Russia this species occurs in broad-leaved, coniferous and mixed forests. The three populations of C. calceolus within the Mordovia State Nature Reserve and National Park “Smolny” were characterized by the dominance of vegetative individuals in stage spectrum, while generative plants predominated in two other populations located in mixed forests. No correlation between total abundance of individuals and stage spectrum in populations of threatened species has been found over the study period. The population in Mordovia Reserve showed a higher fruit set (36.7% as a mean) than others reported within its range. Continued population monitoring of C. calceolus in Central Russia from different habitat types is suggested. Generalization of jointly obtained demographic, ecological, phytocoenological data will be appropriate in order to develop measures for conservation and management of C. calceolus habitats.

Pioneers of the botanical exploration of south america - early 19 ^th century jean-théodore descourtilz (1796-1855)

Abstract Jean-Théodore Descourtilz (1796-1855) was a well-known ornithologist who produced beautiful illustrated books on Brazilian birds. Less-known is an unpublished manuscript with water-colours of Brazilian orchids, which was acquired by the wealthy French Baron Delessert, who send it on loan to John Lindley. Lindley described dozens of new orchid species based on Descourtilz’ illustrations and used several of them as models for his beautiful publication Sertum Orchidaceum. Here we present a large selection of Descourtilz’ original illustrations of Brazilian orchids, including all the drawings that have been used by Lindley to typify his new taxa based on Descourtilz’ exploration.