Mid-lobe of the lip obovate-reniform, retuse or bilobed and apicu- 
late 3. P. pandurata 
Mid-lobe of the lip triangular or ligulate, entire 
Dise of the lip round-obovate in outline; mid-lobe narrowly 
ligulate 1. P. guianensis 
Disc of the lip cuneate with a subtruncate apex ; mid-lobe broad- 
ly triangular 2. P. lobulata 
1. Palmorchis guianensis ( Schitr. ) Schweinfurth 
& Correll comb. nov. 
Neobartlettia guianensis Schlechter in Fedde Repert. 
16 (1920) 441. 
Neobartlettia Kuhlmannii Schlechter in Beihefte Bot. 
Centralbl. 42, Abt. 2 (1925) 76. 
The only notable difference between Neobartlettia 
Kuhlmanni, of which we have seen an isotype, and N. 
guianensis,represented by apparently authentic material, 
consists in the shorter and narrower leaves of N. KuAl- 
mannu. In the flowers of the latter concept, the column 
is glabrous (as described in N. guianensis) and not pilose 
in front as stated for N. Kuhlmanni. Also, the mid-lobe 
of the lip is carinate-thickened, as described in N. guia- 
nensis. This species is found in British Guiana and Brazil. 
2. Palmorchis lobulata (Mansf.) Schweinfurth 
& Correll comb. nov. 
Neobartlettia lobulata Mansfeld in Notizbl. Bot. Gart. 
Berlin 10 (1928) 237. 
This species is closely allied to P. gwianensis and, when 
additional material becomes available, it may prove to 
be conspecific. It is found in Peru and Colombia. 
3. Palmorchis pandurata Schweinfurth & Correll 
sp. Nov. 
Herba caespitosa, robusta. Radices fibratae, valde 
tomentosae. Caules in parte inferiore vaginis cylindraceis 
arctis omnino obtecti,in parte superiore laxe foliati. Folia 
plura, elliptica vel oblongo-elliptica, acuminata, submem- 
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