riety is a savanna plant, whereas the type appears to oc- 
cur mainly in forests or at the forest margins. 
D. pulchella is evidently most closely related to D. 
ugandensis (Rendle) Summerh. The latter has smaller 
flowers with a differently shaped lip. This latter organ 
is more or less orbicular, the basal margins being rounded 
but entire whereas in the apical part they are irregularly 
toothed. At the apex is a broad sublunate truncated sinus 
with a small central apiculus. In D. pulchella the basal 
part of the lip is distinctly cuneate-flabellate while the 
front margins are irregularly dentate and more or less 
obscurely trilobed, the middle lobe being narrowly and 
sometimes rather deeply incised to form two sub-lobes 
which give a four-lobed appearance to the whole. The 
narrow apical sinus or cleft has sometimes a small central 
apiculus. So far as the lateral sepals and pollinarium are 
concerned D. ugandensis more closely agrees with the 
Kenya and Tanganyika type form of D. pulchella than 
with the Uganda variety genicu/ata with which it occurs. 
Diaphananthe Schimperiana (4. Richard) Sum- 
merhayes comb. nov. 
Dendrobium ? Schimperianum A. Richard Tent. FI. 
Abyss. 2 (1851) 282. 
Angraecum Schimperianum Reichenbach filius in 
Walp. Ann. 8 (1852-8) 573. 
This species is omitted by Schlechter from his account 
of the Angraecoid Orchids. From dissections made of a 
rather withered flower on a duplicate of the type, taken 
together with Reichenbach’s description, it is evident 
that the species should be referred to Diaphananthe. 
Here it is clearly related to D. Stolzu Schltr. and D. 
pulchella Summerh. From D. Stolz it may be distin- 
guished by the much longer leaves with a more unequal 
apex in which the shorter lobe is scarcely evident. In 
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