resemble those of D. fragrantissima. D. vandiformis 
(Kraenzl.) Schltr., judging from the photograph in 
Schlechter Die Orchideen, fig. 202, has apparently a 
habit similar to that in D. Welwitschii, but the leaves are 
much longer and spreading. Until it is possible to see 
material of this species from the Cameroons it had best 
be left as a separate species. 
As now understood D. fragrantissima occurs in Ou- 
bangui-Chari, Eastern Belgian Congo, southern Sudan, 
Uganda, northern Tanganyika Territory, Angola and 
North-Western Rhodesia. From the data available it 
appears generally to inhabit gallery forests and dryish 
woodlands in savanna regions, either epiphytic or on 
rocks. 
Diaphananthe pulchella Summerhayes sp. nov. ; a 
D. Stolzi Schitr. caule multo breviore, foliis longioribus 
angustioribusque, inflorescentiis longioribus, floribus mi- 
noribus, tepalis obtusissimis vel rotundatis; a D. ugan- 
densi (Rendle) Summerh. floribus majoribus, labello 
subflabellato distinguenda. 
Herba epiphytica, pulchella; caulis brevis vel + elon- 
gatus, = dependens, usque ad 13 cm. longus, 3-4 mm. 
diametro, superne dense 4—9-foliatus, inferne vaginis fol- 
iorum delapsorum fere omnino circumdatus, radices flex- 
uosas ramosas, griseas, laeves, 4-6 mm. diametro per 
totam longitudinem emittens. Mola circiter 7.5 mm. 
distantia, patentia; vagina arcta, leviter compressa, valde 
nervosa, 5-10 mm. longa; lamina oblongo-ligulata, lig- 
ulata vel lineari-ligulata, apice inaequaliter bilobulata, 
lobulis rotundatis vel obtusissimis longiore 4-11 mm. 
longo, basi leviter angustata, 4.5-15 cm. longa, 7-11 
mm. lata, + coriacea. Inflorescentiae ex axillis foliorum 
vel foliorum delapsorum exortae, singulae, simpliciter 
racemosae, dependentes, 6-15 cm. longae, sublaxe mul- 
[ 108 J 
