Sobralia luteola Rolfe in Kew Bull. 199, 1898. 
Type: Tropical America: flowered in cultivation by RALLI 
S.C). 
Syn.: Sobralia pleiantha Schltr. in Fedde, Rep. 3: 79, 1906. 
Type: Costa Rica: Boruca, PITTIER 3855! (AMES). 
The rather short, distichous inflorescence with imbricating 
bracts and the production of flowers in a rapid succession are 
the distinguishing features of this species. An examination of 
both holotypes confirms them to be conspecific. 
Sobralia Powellii Schltr. in Fedde, Rep. Beih. 17: 11, 1922. 
Type: Panama: near Gatun Lake, POWELL 2! (AMES). 
Sobralia Powellii has been treated as a synonym of S. leu- 
coxantha Rchb.f. by all contemporary students of American 
orchids. An examination of the type of §. leucoxantha, how- 
ever, Clearly indicates that both species are amply distinct, not 
only in vegetative aspects, but also in size and structure of the 
flowers. The original mix-up is most probably due to the mis- 
identification of Plate 7058 in the BOTANICAL MAGAZINE. Iron- 
ically, most of the true §. leucoxantha specimens in herbaria 
are misidentified as §. macra Schltr., which, however, is not a 
synonym of S. leucoxantha. | have seen material also from 
Costa Rica, Colombia and Ecuador. 
Sobralia Warscewiczii Rchb.f. in Bot. Zeit. 10: 714, 1852. 
Type: Panama; Chiriqui, WARSCEWICz 8! (W). 
Syn.: Sobralia Amparoae Schltr. in Fedde, Rep. Beih. 19: 
8, 1923. 
Type: Costa Rica; from cultivation, TONDUz 51! (AMES). 
Sobralia Hawkesii Heller in Phytologia 14: 16, 1966. 
Type: Nicaragua; Dept. Granada, Volcan Mombacho, 
HELLER & HAWKES 30235 (FP). 
An examination of the types of S. Warscewiczii and §. Am- 
paroae and a comparison of them with the published illustra- 
tion of S. Hawkesii indicates that all three species are con- 
specific with one another. 
