Lankesteriana

**Taxonomic validation of a well-known odontoglossum (orchidaceae: oncidiinae) “ghost”**

The plant that was first called “Odontoglossum wyattianum” by Gurney Wilson was exhibited at a meeting of the Royal Horticultural Society on January 3, 1928. No official description was ever published and no type specimen was ever designated, or has surfaced, hence making this distinct species a taxonomic ‘ghost’. The taxonomic validation of Odontoglossum wyattianum is made here through the designation of a holotype, together with a diagnosis, a brief taxonomic history and comparison with similar and closely related species.

Notes on Costa Rican Pterichis (Orchidaceae) - new taxa and additions to national orchid flora

A new species of the orchid genus Pterichis, P. herrerae, and a new variety of P. habenarioides, P. habenarioides var. costaricensis, are described and illustrated based on Costa Rican material. Information about new Costa Rican records of P. pauciflora and P. parvifolia is provided. An updated key to Costa Rican species of Pterichis is presented.

**Rediscovery of Malaxis nana (Orchidaceae: Malaxideae) in Costa Rica, with an updated description**

Malaxis nana C. Schweinf. is known from two herbarium specimens collected in 1925 in San Ramón, Alajuela province, and three additional specimens without detailed locality data collected in the late 1800’s, all of them in Costa Rica. This species had not been registered since. Malaxis nana is hereby first reported for Las Cruces Biological Station, Puntarenas province, in southern Costa Rica. An updated description, illustration, photographs and distribution map for this taxon are provided.

Malaxis nana C. Schweinf. se conoce de dos especímenes recolectados en 1925 en San Ramón, provincia de Alajuela, y tres especímenes adicionales sin datos de localidad detallados y recolectados en los finales de los 1800’s, todos de Costa Rica. Esta especie no había sido registrada desde entonces. Aquí informamos por vez primera sobre la existencia de Malaxis nana en la Estación Biológica Las Cruces, provincia de Puntarenas, en el sur de Costa Rica. Se presenta una descripción actualizada, ilustración, fotografías y mapa de distribución para este taxón.

Nuevos registros de orchidaceae para Honduras

Eight new records of orchids for the Honduras flora are reported here. The new records are: Goodyera major (Santa Bárbara department), Lophiaris × oerstelurida (Atlántida), Maxillaria reichenheimiana (El Paraíso), Microchilus killipii (Cortés), Mormodes nagelli (Ocotepeque), M. sotoana (Choluteca), Specklinia spectabilis (Cortés), and Triphora debilis (Santa Bárbara). We provide photos of these species and their habitats, and a map for their known localities in Honduras.

Se registran ocho novedades de orquídeas para la flora de Honduras. Los nuevos registros son: Goodyera major (Departamento Santa Bárbara), Lophiaris × oerstelurida (Atlántida), Maxillaria reichenheimiana (El Paraíso), Microchilus killipii (Cortés), Mormodes nagelli (Ocotepeque), M. sotoana (Choluteca), Specklinia spectabilis (Cortés) y Triphora debilis (Santa Bárbara). Incluimos ilustraciones de las especies y los hábitats y un mapa de distribución

**Contributions to the genus Heataeria (orchidaceae: goodyerinae) in Vietnam**

As a result of Hon Ba nature reserve survey, Hetaeria finlaysoniana, previously recorded from Thailand, Myanmar and southern China, is newly recorded from Vietnam. Description of studied plants is presented together with notes on ecology and photographic documentation. These plants were collected in southern Vietnam (Hon Ba Nature Reserve, Khanh Hoa), which is located quite far from other known localities and thus a larger distribution of this possibly overlooked species could be expected. Additionally, H. youngsayei is newly recorded from the same reserve, 540 km from the nearest previously known locality. Distribution of both species is discussed and an updated identification key for all Vietnamese members of the genus Hetaeria is presented.