quadrato sulcato apice rotundato vel retuso supra me- 
dium ornatus. Columna brevis, crassa, leviter arcuata, 
circiter 5.5 mm. alta, in pedem longiorem producta. 
This species appears to be allied to the Peruvian Maail- 
laria tenuis C. Schweinf., but it differs in having much 
longer scapes and larger flowers with a very prominent 
mentum and a subentire lip. 
VENEZUELA: State of Bolivar, Region of Uriman, forest mesa of 
Aprada-tepui, at 950 m. altitude, August 13, 1953, Bernardi 780 
(Type in Herb. Univ. de los Andes, Mérida; Isoryrr in Herb. Ames 
No. 69561).—Between El Dorado and Sta. Elena, epiphyte in forest, 
flowers white, April 24, 1957, Brother Hermano Antonio 714.—110 
km. south of El Dorado. G. C. K. Dunsterville 520. A large collection 
from Altiplanicie de Nuria (Bolivar), Julian A. Steyermark 87197 and 
89045, appears to represent this orchid. 
Maxillaria sulcata C. Schweinfurth nom. nov. 
Mazillaria rugosa Schlitr., in Notizbl. Bot. Gart. u. 
Mus. Berlin-Dahlem 6 (1914) 125, non Scheidw., 18438. 
The above new name is proposed to replace the homo- 
nym, Mawzillaria rugosa Schltr. The specific epithet, 
meaning furrowed, was selected to describe the rugose 
sheaths which suggested the original name of this taxon. 
No record of this concept was available. 
VENEZUELA: State of Bolivar, Mt. Roraima, at about 2000 meters 
altitude, in the lower woods, F. Ule 8572, blooming in December 
1909. 
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