Lankesteriana

Pityphyllum mercedes-abarcae (Maxillariinae) a new species from Ecuador

Abstract A new species of Pityphyllum from south-eastern Ecuador was found during an investigation of the orchids of the Cordillera del Cóndor. Pityphyllum mercedes-abarcae is described and illustrated. Information concerning its distribution, habitat, and phenology is provided. The new proposed taxon is morphologically similar to P. pinoides, from which it differs by the smaller plants, the spathulate petals with an erose margin in the middle third, lip flattened is square in the middle third, wedge in the basal third, and acute in the apical third with two small parallel calluses in the apical third, presents a slight cell thickening in the abaxial part of the apical third and elongated trichomes below the stigma.

Resumen Una nueva especie de Pityphyllum del sureste de Ecuador fue encontrada durante una investigación sobre las orquídeas de la Cordillera del Cóndor. Pityphyllum mercedes-abarcae se describe e ilustra.Se proporciona información sobre la distribución, el hábitat y la fenología de esta especie. El nuevo taxón propuesto es morfológicamente similar a P. pinoides del cual se diferencia por las plantas más pequeñas, los pétalos espatulados con el margen eroso en el tercio medio. El labelo aplanado es cuadrado en el tercio medio, cuneado en el tercio basal y agudo en el tercio apical con dos pequeños callos paralelos en el tercio apical, presenta un ligero engrosamiento celular en la parte abaxial del tercio apical del labelo y tricomas alargados debajo del estigma.

Two new species of Andinia (Pleurothallidinae) from the Central Cordillera of Peru

Abstract: Two new Andinia species are described, A. barba-caprina and A. crassipetala, both found during a botanical expedition to the montane forests of the Central Cordillera of the Peruvian Andes. They are compared with morphologically similar species, and Lankester Composite Dissection Plates (LCDP) are provided. Andinia barba-caprina is more similar to A. tingomariana but is distinguished by having obovate sepals with sparsely erose margins and the lip with narrowly obtuse, short basal lobes and a group of large hairs on the abaxial surface. Andinia crassipetala is distinguished from the two most similar species, A. hernandoi Est.Domínguez & S.Vieira-Uribe and A. persimilis (Luer & Sijm) Karremans & S.Vieira-Uribe for having thick, deltate and obtuse petals.

Explosive range expansion of Eulophia graminea (Orchidaceae) in Puerto Rico and the West Indies

Abstract: Eulophia graminea Lindley (Orchidaceae), a native orchid of tropical and subtropical Asia, was first reported in the Western Hemisphere from populations in Miami, Florida, U.S.A. where it spread rapidly through the southern part of the state. Here we report the first record of this species for Puerto Rico and sightings in the Bahamas and Cuba, reflecting the rapid spread seen in southern Florida (U.S.A).

Resumen: Eulophia graminea Lindley (Orchidaceae), una orquídea nativa de Asia tropical y subtropical se informó por primera vez en el hemisferio occidental en poblaciones de Miami, Florida, EE. UU., donde se extendió rápidamente por la parte sur del estado. Aquí informamos el primer registro de esta especie para Puerto Rico y también avistamientos en las Bahamas y Cuba, lo que refleja la rápida propagación observada en sur de Florida (EE. UU.).

Notes on Australasian Orchidaceae 7: updates on the nomenclature of Sullivania (Diurideae: Drakaeinae)

Abstract: Sullivania F.Muell. (Orchidaceae) is recognized as a validly published genus having priority over Paracaleana Blaxell, and thirteen species (eleven described) in Paracaleana are here transferred to it.

Two new species of Bulbophyllum (Orchidaceae) from Thailand

Abstract: Two new species of Bulbophyllum (Orchidaceae) are described: B. sphenoglossum (sect. Lemniscata) and B. trigonanthum (sect. Reptantia). Both species occur in Thailand.

Bulbophyllum karbianglongensis (Epidendroideae), a new Species from Assam, India

Abstract: A new epiphytic Bulbophyllum belonging to section Cirrhopetaloides is described from tropical mixed evergreen forests of Karbi Anglong (Assam, India) with coloured photographs and line drawings. It is allied to the Bulbophyllum bicolor, B. venulosum, and B. blaoense, but differs in the size and shape of pseudobulbs, the shape of the leaf blade, and flower size. A detailed description with corresponding color photos and information on the habitat is provided.

Viability and infectivity of Ceratobasidium sp. encapsulated in alginate beads under different storage conditions

Abstract: Mycorrhizal fungi are important partners of orchids because they establish close symbiotic relationships with this group of plants, and its preservation is also important for the successful conservation of orchids. In the present study, the conservation of Ceratobasidium sp., a fungal symbiont, using encapsulation in alginate beads was tested over different times, temperatures of storage and dehydrated conditions. Osmotically dehydrated and air-dried beads were stored at room temperature (20 ± 2 °C), 4 °C, -20 °C and -80 °C. The fungal growth was verified after 4, 8, 26 and 96 weeks. A second test was carried out to evaluate the encapsulations of fungi as a form of inoculation in Trichoceros antennifer orchid to promote symbiosis and plants development. The results show that the encapsulation of Ceratobasidium in alginate beads is a viable strategy for its conservation, the beads are of easy manipulation and promote plant growth when inoculated in plant substrate. These results may be adopted as part of effective conservation strategies for mycorrhizal fungi and orchids.

Resumen: Los hongos micorrícicos son socios importantes de las orquídeas ya que establecen relaciones simbióticas estrechas con este grupo de plantas y su conservación es también importante para la conservación de las orquídeas. En este estudio, la conservación de Ceratobasidium sp., un simbionte fúngico, usando encapsulación en perlas de alginato fue evaluada a diferentes tiempos, temperaturas de almacenamiento y formas de deshidratación. Cápsulas secadas al aire y deshidratación osmótica fueron almacenadas a temperatura ambiente (20 ± 2 °C), 4 °C, -20 °C y -80 °C. El crecimiento del hongo fue verificado después de 4, 8, 26 y 96 semanas. Una segunda prueba fue llevada a cabo para evaluar la encapsulación del hongo como una forma de inoculación para promover la simbiosis y el desarrollo en plantas de la orquídea Trichoceros antennifer. Los resultados sugieren que la encapsulación de Ceratobasidium en perlas de alginato, es una estrategia viable para su conservación, que las perlas son fáciles de manipular y que estimulan el crecimiento cuando se inoculan en el sustrato de las plantas. Este trabajo podría facilitar el diseño de estrategias de conservación de hongos micorrícicos y de las orquídeas asociadas.

A New Lepanthes (Pleurothallidinae) from southwestern Colombia

Abstract: A new species of Lepanthes from southwestern Colombia is presented here. Lepanthes farallonensis belongs to the informal group ''manabina'', which comprises species with concave and commonly pubescent leaves, flowers resting on the adaxial side of the leaves, and the synsepal with short to long tails. Lepanthes farallonensis is similar to L. smaragdina in the broadly ovate dorsal sepal but differs in the conspicuously twisted upper lobes of the petals, outwardly bent and a depression at the center of the laminae of the lip.

Resumen: Se presenta una nueva especie de Lepanthes del suroeste de Colombia. Lepanthes farallonensis pertenece al grupo informal ''manabina'', un grupo de especies con hojas cóncavas y comúnmente pubescentes, con flores que descansan sobre el lado adaxial de la hoja y que poseen sinsépalos con caudas que van desde cortas a largas. Lepanthes farallonensis es similar a L. smaragdina en el sépalo dorsal, ampliamente ovado y se diferencia en poseerlos lóbulos superiores de los pétalos conspicuamente retorcidos, doblados hacia afuera y una depresión en la parte media de las láminas del labelo.

Two new orchid species (Camaridium: Maxillariinae; Lepanthes: Pleurothallidinae) from the Pacific slope of the Northern Andes, Colombia

Abstract: The Northern Andean Cordillera in Colombia hosts unique, megadiverse, and fragile ecosystems, including wet tropical lowland, cloud forest, and paramo that are essential for climate regulation and the subsistence of human settlements. The Serrania de Los Paraguas on the Pacific slope of the western range of the Northern Andes, Colombia, is an ecosystem that needs to be preserved in the face of a major threat due to rapid deforestation. However, there have been very few explorations surveying its plant diversity in the area. Here, we describe two new orchid species to science from the genera Camaridium (C. antonellii: Maxillariinae, Cymbidieae) and Lepanthes (L. valerieae: Pleurothallidinae, Epidendreae) discovered during a floristic survey conducted in the region. Camaridium antonellii is similar to C. inauditum but differs in the fractiflex, ovate-elliptic, acute leaves, the flowers with pink sepals and petals, the lip white, distinctly three-lobed, spotted with purple on the lateral lobes and yellow-cream towards the apex, the mid-lobe ovate to transverse ovate and lanceolate sepals. Lepanthes valerieae, which is similar to L. antennata, differs in the long apical lobes of the petals, surpassing the dorsal sepal, the longer connectives > 18 mm, rounded lobes of the lip, and the oblong, flattened appendix. Illustrations, distribution maps, and photographs are provided.

Rudolf Schlechter's South-American orchids VI. Schlechter's ''Network'': Bolivia, Paraguay, Chile, Argentina, and Uruguay

Abstract. The sixth and last chapter of this series about Rudolf Schlechter's South American network covers Bolivia, the last of the tropical Andean countries, and continues into the partly tropical and subtropical regions of South America: Paraguay, Chile, Argentina, and Uruguay. Although Bolivia has a high biodiversity and a large orchid flora, the remaining countries (except for parts of Paraguay and a small part of northern Argentina) have mostly terrestrial orchids and were historically visited only by a relatively few European botanists. The number of travellers mentioned in this chapter is therefore much lower than in previous ones. As in previous chapters, the biographies and accomplishments of these travellers are preceded by brief geographical and historical introductory outlines for each country. Again, a few figures, such as August Weberbauer, already mentioned in the last chapter, are omitted here.