In: Phyton 55, Fasc. 2 (2015): S. 297-311 DOI: 10.12905/0380.phyton55(2)2015-0297

Eight New Species of Scelochilus (Orchidaceae-Epiden­droideae-Oncidieae) from South America

Key words: Scelochilus, Comparettinae, Oncidieae, Epidendroideae, Orchi­daceae. – New species, systematics, taxonomy. – Flora of Ecuador, Bolivia, Neotropics.

Szlachetko D. L., Kolanowska M. & Ole?drzyn´ska N. 2015. Eight new species of Scelochilus (Orchidaceae-Epidendroideae-Oncidieae) from South America. – Phy­ton (Horn, Austria) 55 (2): 297–311, with 10 figures.

Summary
The generic delimitation of Scelochilus Klotzsch (Orchidaceae-Epidendroide­ae-Oncidieae-Comparettinae) is discussed and a narrow genus concept is chosen. Eight new species of Scelochilus are described and illustrated, seven from Ecuador and one from Bolivia, namely: S. bicornutus Szlach., Kolan. & Ole?drz. (with indis­tinctly separated lip hypochile and epichile), S. bolivariensis Szlach., Kolan. & Ole?drz. (lack of lamellae on the lip disc), S. denticulatus Garay ex Szlach., Kolan. & Ole?drz. (obliquely elliptic petals), S. obovatus Szlach., Kolan. & Ole?drz. (obovate lip hypochile), S. pseudochiribogae Szlach., Kolan. & Ole?drz. (crenate margins of epichile), S. pubescens Szlach., Kolan. & Ole?drz. (tuft of hairs in the centre of the hypochile), S. solomonii Szlach., Kolan. & Ole?drz. (ciliae in the central part and on the margin of the lip; Bolivia), S. tandayapensis Szlach., Kolan. & Ole?drz. (trans­versely elliptic, bifid epichile). The taxonomic affinities of the novelties within the genus are discussed.