The concept Oncidium Lankesteri, which is a fre- 
quent and rather variable species of the higher levels of 
Costa Rica, seems to be inseparable from O. ansiferum 
as represented in our herbarium by a fragment from the 
type in the Reichenbach Herbarium in Vienna, as well 
as by an analytical drawing of the flower etc. made by 
Reichenbach from this type and a photographic record 
of typical material in the Lindley Herbarium at Kew. 
The pseudobulb represented in the analytical drawing 
of the type made by Reichenbach is oval or round-ovate 
in outline (very similar to that of the concept O. Lankes- 
tert),and not oblong as described by Reichenbach (in Xen. 
Orch. |.c.). In view of the above-cited records of the type, 
the drawing of the lip in Xenia is also faulty. Consider- 
able variability exists in this species in regard to vegeta- 
tive and floral size and in the degree of toothing on the 
wings of the column. 
The type of O. ansiferum from Panama (Chiriqui) was 
found at 8000 feet, while the form described as O. Lan- 
kestert occurs at altitudes varying from 8000 to 7000 feet. 
Allied species are represented by Oncidium suave 
Lindl., O. Suttona Batem. ex Lindl. and especially by 
O.naranjense Schltr. All of these species, however, differ 
from O.ansiferum in the form of the lip. 
Oncidium tigrinum La Llave & Lexarza Nov. 
Veg. Descr. fase. 2 (1825) 36. 
Oncidium Barkeri Lindley in Bot. Reg. 27 (1841) 
Mise. p. 81. 
Odontoglossum Ghiesbreghtianum A. Richard & Gale- 
ottiin Ann. Sci. Nat. ser. 8, 3 (1845) 27. 
Oncidium unguiculatum Lindley in Journ. Hort. Soc. 
London 1 (1846) 303, cum ic. 
Odontoglossum tigrinum Lindley Fol. Orch. Odonto- 
glossum (1852) p. 5. 
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