FLORA OF EASTERN TROPICAL AFRICA. 391 
protenso cylindrico; processibus stigmaticis elongatis protrusis 
supra medium incrassatis verrucosisque sub apice leviter recur- 
vatis; anthera apiculata quam rostellum cucullatum paullo 
breviore, hujus apice valde apiculato protenso, canalibus tenuibus 
suberectis. 
Hab. Rabai Hills: W. E. Taylor, 1886. 
A large-flowered herbaceous leafy plant 10 inches high. The 
two lower leaves are oval in shape, the lowest 4 inches long by 
1j inch broad, the next rather smaller and the uppermost much 
smaller (14 inch long) and ovate. A minute bract is present mid- 
way between the small leaf and the lowest of the three large 
flowers. The flaccid membranous long pointed bracts are nearly 
1 inch in length, while the ovary with its stalk measures 11 inch. 
The hooded dorsal sepal is 8 lines long; the broadly obliquely 
oblong lateral sepals with their apiculate falcate tips are # inch 
long by 4 inch broad. The posterior segments of the petals 
form the straight edges of the sepaline hoods, the anterior seg- 
ments are nearly twice the length (14 lines) and consist of a long 
filiform base and a broader falcate upper portion (4 line at 
broadest), passing into a recurving almost aristate tip, they 
resemble in character the narrow lateral lobes of the lip (14 inch 
long); the very similar central lobe is 1 inch long. The thick 
outwardly curving spur is 1? inch long by § line in diameter, the 
lower third slightly narrower. The protruded stigmatic pro- 
cesses are 8 lines long, they become thicker and apparently 
warted in the upper surface above the middle. The hooded 
rostellum bears an anteriorly projecting apiculus. The narrow 
anther-canals are 4 lines long. 
Approaches H. Volkensiana, Kraenz. (e descript. in Engl. Jahrb. 
xix. p. 244), from Kilimanjaro, in floral characters, but is a much 
smaller plant with a less striking inflorescence; the Kilimanjaro 
species being a fine orchid 40-60 em. high with a long richly 
flowered inflorescence. The Rabai plant has also longer sepals, 
petals, and spur. 
HABENARIA (§ CERATOPETALE) EQUATORIALTS, sp.nov. Planta 
glabra subvalida; caule angulato ; foliis radicalibus 2 magnis 
orbicularibus, caulinis distantibus lineari-lanceolatis vel lanceo- 
latis bracteiformibus superne acuminatis transitumque in bracteas 
floriferas iis similes sed minores prebentibus ; spica ovali 
vel oblonga; sepalo dorsali ovato obtuso 5-nervio, lateralibus 
