aequaliter trilobatum; lobus intermedius  triangulari- 
semiorbicularis, apiculatus, 2 mm. longus, 3.6-4 mm. 
latus; lobi laterales erecti, oblique et incurvatim sub- 
quadrato-ovati, 2 mm. longi, 8-8.5 mm. lati; discus 
ecallosus. Columna subteres, apice truncata, 1.6-2 mm. 
alta, 1.5-2 mm. diametro; androclinium satis excavatum, 
anthera fere hemisphaerica antice subacuta; fovea stig- 
matica transverse elliptica. 
Kenya Cotrony: Kericho, 1950 m. alt., March 1933, Gray 90, cult. 
& comm. May 2nd., 19389 (Tyer). “‘Flowers white with orchid-coloured 
throat and orange line in centre of labellum; anther orchid-coloured. ’’ 
Tuso, Eastern Aberdare Mts., in forest, April 1935, Napier 3652. 
*'Flowers creamy-white with mauve ‘lip’ and a spot of orange on yel- 
low on upper lip.’’ 
This pretty little species is apparently closely allied to 
P. caespitifica WKraenz|. which, however, is said to have 
‘intense yellow” flowers, and also differs by the charac- 
ters given in the diagnosis. The most striking feature of 
P. latilabris is the very broad lip with large erect side 
lobes which, although equalling the middle lobe in length, 
are somewhat greater in area. Unfortunately the lip of 
the only flower on the type sheet of P. caespitifica has 
been lost, and Kraenzlin’s description is not adequate to 
convey a true picture of the structure of this important 
floral organ. Judging by the description it may well re- 
semble that in P. datilabris, being ecallose in each case. 
Further collections of P. caespitifica from the original lo- 
‘ality are much desired, since it is the first described spe- 
cies of the small group to which it belongs. 
Polystachya dendrobiiflora Reichenbach _filius 
Otia Bot. Hamburg. (1881) 76. 
Polystachya longiscapa Summerhayes in Bull. Mise. 
Inform. Kew (1934) 211. 
Further consideration makes it evident that these two 
are conspecific. It should be noted that the inflorescence 
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