236 PLANTS COLLECTED ON MT. RUWENZORI. 
Petala 2 mm. long. vix 1 mm. lat. Labellum 7:5 mm. long. vix 4 mm. 
lat., cum venis tribus longitudinalibus, antice in venis et venulis papil- 
losum, Columna 2 mm. long. 
Near Polystachya Adansoniv, Weichb. fil., from Angola, in habit, but has 
longer narrower flowers arranged in a shorter more erowded raceme with 
longer floral bracts, and differs also in the details of. structure of. petals 
and lip. 
POLYSTACHYA BICARINATA, sp. nov. 
Planta habitu P. cultratw, floribus autem duplo majoribus, sepalo dorsali 
ovato-oblongo, acuto, 3-nervio, sepalis lateralibus faleate triangulari- 
ovatis acutis dorso late carinatis, incomplete 5-nerviis, mentum obtusum ; 
petalis quam sepalis brevioribus, oblongo-spathulatis, abrupte subacutis, 
j-nerviis; labello e basi lato trilobato, lobis lateralibus rotundatis, lobo 
medio his subsequali, breviter apiculato, disco cum crista linguiformi ; 
columna erassa, brevi. 
Folium late oblongum, ad basin angustatum, plurinervium, 16 em. Jong., 
pæne 4 em. lat, Scapus cum panicula densiuseula folio brevior. Bractese 
ample, 5 mm. long. Flores albi, circa 1:5 em. long. Sepala 1 em. 
long., dorsale 5 mm. lat., lateralia 7 пил. lat. Petala vix 7 mm. long., 
vix 3 mm. lat. Labellum 8:5 mm. long., 7 mm. lat., lobus medius 4 mm. 
long. et lat. Columna 2 mm. long. 
Hab. Ruwenzori Е. 7000 ft. January. Growing on tree-trunks, 
Closely allied to P. eultrata, Lindl., but distinguished by its much larger 
braets and flowers and characters of the lip. 
P. GRACILENTA, Kränzl. in Engl. Jahrb, xix. (1894) 251. 
W. 10,000 ft. August. Flowers white, growing in long grass. 
Previously collected by Stuhlmann at 8200 ft, and by Scott Elliot 
(fruiting specimen) at Butagu, 8000 ft. 
ANGIUECUM COTTELLI, Rendle, in Journ, Bot. xliii. (1895) 249. 
E. 9000 ft. “Parasitic in big trees" January. 
Previously collected by Scott Elliot on Ruwenzori at 7000 (Butagu) and 
8000 ft. 
EPIPACTIS AFRICANA, Rendle, in Journ, Bot. xliii. (1895) 252. 
E. 9000 ft. In fruit; February.—W. 10.000 ft. In flower ; August. 
* Flowers greenish-yellow.” 
Previously collected by Scott Elliot on Ruwenzori at Butagu, 8000 to 
10,000 ft. 
HABENARIA ReNDLEL, Rolfe, in Dyer, Fl. Trop. Afr. vii. 213. 
E. 8000 ft. February. “Flowers green.” 
Previously collected by Scott Elliot on Ruwenzori at 6000 to 7000 ft. 
