count of the extremely small flowers. It is apparently a 
borderline species between Bifrenaria and Mawillaria. 
Venezur.a: Rio Carrao. G. C. K. Dunsterville 262 (Tyrer in Herb. 
Ames. ) 
Bifrenaria grandis (A7riénzl.) Garay comb. nov. 
Lacaena grandis Kriinzl. in Fedde Repert. 25 (1927) 
25. 
An examination of an isotype (Buchtien 501) in the 
U.S. National Herbarium reveals that Kriinzlin’s con- 
cept isa member of the genus Bifrenaria, section Lind- 
leyella, and is closely allied to the Colombian B. picta 
(Schltr.) Schweinf. Bifrenaria grandis is native of 
Bolivia. 
Maxillaria equitans (Sch/ltr.) Garay comb. nov. 
Camaridium equitans Schltr. in Fedde Repert. Beih. 
7 (1920) 176. 
Marsupiaria equitans Hoehne in Arquiv. Bot. Est. 
S. Paulo 2, pt. 4 (1947) 71. 
A recent collection (Cuatrecasas 22092) from the De- 
partamento del Valle in Colombia shows that this spe- 
cies has somewhat falcate leaves, similar to those of MM. 
vandiformis Schweinf., a character not mentioned by 
Schlechter in the original description. Since Camaridium 
is not tenable, the above transfer is proposed. 
Maxillaria Sophronitis (Rchb.f) Garay comb. nov. 
Ornithidium Sophronitis Rchb.f. in Bonpl. 2 (1854) 18. 
This rather showy species has not previously been 
transferred to the genus Maaillaria. It is known from 
Venezuela only and has recently been collected by Mr. 
Dunsterville (Dunsterville 388). 
Scelochilus corydaloides (A7iéinzl.) Garay comb. 
nov. 
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