Lankesteriana

A paperless journal, but still on paper nevertheless

The effect of smoke derivatives and carbon utilisation on symbiotic germination of the endangered Pterostylis despectans (orchidaceae)

Abstract Orchids are highly dependent on exogenous nutritional sources and mycorrhizal associations to survive, particularly when challenged by extreme environmental stress such as bushfires that contribute significantly to its decline in nature. In this study, the effect of smoke derivatives and carbon utilisation was explored to improve germination and seedling establishment of an Australian endangered orchid, Pterostylis despectans (Lowly Greenhood) and its mycorrhizal fungi. Stored seeds were germinated in vitro with peloton- isolated fungal isolates with varying concentrations of smoke water (0-1.0 mL L-1) to simulate fire and sucrose as the carbon source (10 g L-1). Smoke water significantly increased germination, with advanced protocorms and robust seedlings produced. Sucrose inhibited germination such that protocorms and leafing was absent with sucrose inclusion. Fungal isolates were highly variable on its germination efficacy and tolerance to smoke water, highlighting the importance of fungal diversity and supports research-based conservation strategies to circumvent environmental challenges.

A new species of anathallis (Orchidaceae: pleurothallidinae) from brazil

Abstract Anathallis luteola is newly described and illustrated from the state of Bahia, northeast Brazil. It is similar to A. guarujaensis from which it can be distinguished by the smaller flowers, the successive two- flowered raceme, and shape of its floral segments. A note on the latter species is also provided.

The “four footed” lepanthes (pleurothallidinae), a new species from north-western Ecuador

Resumen Se describe e ilustra una nueva especie de Lepanthes, cercanamente relacionada a L. hexapus y L. aguirre. La especie nueva se caracteriza por tener pétalos bilobados, filiformes y curvados. Se proven notas ecológicas y taxonómicas. Además, se presenta por primera vez una localidad conocida para L. bibarbullata.

Abstract A new species of Lepanthes, closely resembling L. hexapus and L. aguirrei, is described and illustrated. The new species is characterized by bilobed, filiform and curved petals. Ecological and taxonomic notes are given. In addition, the first known locality for L. bibarbullata is presented herein.

Specialized herbivory on inflorescence stalks of trichocentrum undulatum (orchidaceae) by melanagromyza sp. (Diptera: agromyzidae) in Cuba

Abstract Inflorescence stalk herbivory on the Mule Ear orchid (Trichocentrum undulatum) has been observed in Cuba, which resembles the specialized herbivory interaction seen in southern Florida between a specialized dipteran, Melanagromyza miamensis (Agromyzidae) and the Mule Ear orchid. We are able to identify the inflorescence herbivore to be the genus Melanagromyza. It is possibly the same species that can be found in southern Florida. The mule-ear orchid is endemic to the Caribbean region, i.e. Cuba, Jamaica and southern Florida. To our knowledge, this is the first report of an apparently specialized inflorescence stalk herbivory by Agromyzid flies on the Mule Ear orchid in Cuba. The herbivory can partially or completely destroy the flowering potential of the impacted plants.

The genus palmorchis (orchidaceae: neottiae) in Peru: a taxonomic synopsis including four new species and a new record

Abstract A taxonomic synopsis of Peruvian Palmorchis with six accepted species is provided including four new species (P. blancae, P. liberolabellata, P. loretana and P. yavarensis) and a new record previously reported only for Ecuador (P. imuyaensis). This overview is the result of a review of local herbaria, taxonomic literature, and a field study of the genus. An artificial key for all Peruvian Palmorchis species is presented, as well as photographs and a map of known localities in Peru.

Resumen Se presenta una sinopsis taxonómica de Palmorchis peruanas con seis especies aceptadas, incluyendo cuatro nuevas especies (P. yavarensis, P. blancae, P. liberolabellata y P. loretana) y un nuevo registro (P. imuyaensis) previamente reportado sólo para Ecuador. Este resumen es el resultado de la revisión de herbarios locales, literatura y el estudio de campo del género. Se presenta una clave artificial para todas las especies de Palmorchis peruanas, así como fotografías y un mapa de todas las localidades conocidas en Perú.

First wild record of Dendrochilum warrenii (orchidaceae: epidendroideae) confirms a philippine provenance

Abstract Recent explorations on one of the mountains of the Bukidnon province on the island of Mindanao in the Philippines resulted in a wild collection of Dendrochilum warrenii, an Orchidaceae species described in 2004 from a cultivated plant of unknown provenance. In this publication, an extended species description along with color photographs are provided to aid future identification. Information on the distribution, ecology and phenology of the species in the wild is also provided.

Sertifera, a new generic record for the peruvian orchid flora

Resumen Una especie de orquídea, previamente conocida de los Andes del Norte, se reporta por primera vez para el Perú: Sertifera purpurea. Se presenta una descripción, ilustración, fotografías y comentarios sobre la especie.

Abstract An orchid species, previously known from Northern Andes, is reported for first time in Peru: Sertifera purpurea. A description, illustration, photographs, and comments about the species are provided.

A new species of pleurothallis (orchidaceae: pleurothallidinae) in subsection macrophyllae-fasciculatae with a unique, highly reduced, morphologically distinct labellum

Abstract Pleurothallis minutilabia, a species unique in subsection Macrophyllae-Fasciculatae because of the minute, highly reduced lip, is described and compared to the most similar species in the subsection. It is also compared morphologically to Pleurothallis kaynagata from section Abortivae, to which P. minutilabia is not related, but which also possesses a highly reduced lip. The morphology of the flower of P. minutilabia is discussed briefly in relation to possible pollination mechanisms. The distribution, restricted to Zamora Chinchipe, southern Ecuador, and the conservation status are addressed.

Scaphosepalum tarantula (orchidaceae: pleurothallidinae), a new species from Ecuador

Abstract A new species, Scaphosepalum tarantula, is described. It is recognized by the medium-sized plants with grey-green leaves suffused with red-brown to purple stains at the petioles; densely fimbriated, red-brown to sanguine flowers, spiky tails of the lateral sepals and a dark sanguine, wingless lip. It is here compared to Scaphosepalum fimbriatum with which it shares similarities.

Resumen Se describe aquí Scaphosepalum tarantula, una nueva especie. Se reconoce por las plantas de tamaño mediano con hojas verde-gris salpicadas por manchas rojo-café en los peciolos; las flores densamente fimbriadas, café-rojizo a color sangre, con las caudas de los sépalos laterales con púas y el labelo sin alas. Se lo compara con Scaphosepalum fimbriatum, con el que comparte rasgos similares.

The orchidaceae of primitiae florae essequeboensis (1818)

Abstract The German botanist and Professor at the University of Göttingen, Georg Friedrich Wilhelm Meyer (1782-1856), studied the plants collected in the Dutch colony of Essequibo by Ernst Carl Rodschied and those kept in the herbarium of Professor Franz Karl Mertens, which he had received from a Dutch colonist during the early 1800s. On that basis, he published in 1818 his work Primitiae Florae Essequeboensis, describing 344 species of plants. Among them there are five species of orchids, two of which were new to science.