and flowered Ibadan, Oct. 1948, Keay in Forest Herbarium 22711 
(Tyre); Benin Prov., Sapoba Forest Reserve, in broken high forest, 
on crown branches of large Jrvingia gabunensis, Oct. 28th 1946, Keay 
& Onochie in Forest Herbarium 21590. 
This very striking species is clearly closely related to 
B. lupulinum Lindl., possessing similar large spreading 
imbricating bracts and a very similar flower structure. 
It may, however, be easily distinguished by the different 
shape of the quite glabrous purple or crimson bracts, 
which here have a slightly incurved apex and conse- 
quently a slight dip in the upper margin. In B. lupuli- 
num the upper margin is either almost straight or evenly 
convex all along, while the bracts are fawn coloured and 
dotted all over with small furfuraceous hairs. In our 
species the bases of insertion of the two rows of bracts 
are separated so that there is a narrow median strip of 
the rhachis visible nearly to the apex, whereas in B. 
lupulinum the bases of the bracts often overlap in a ver- 
tical direction so that the rhachis is only visible on elon- 
gation. The lip in B. porphyrostachys is extremely fleshy 
with a rounded convex lower surface and a flat or slightly 
convex upper surface. At the edge of this are the very 
narrow toothed wings which are a little wider in front. 
The apex of the lip is furnished with a number of small 
warty excrescences. 
Triceratorhynchus Swmmerhayes gen. nov. 
Epiphytica. Caulis brevissimus, plurifoliatus. Molia 
linearia, apice vix bilobulata. IJnflorescentiae patentes, 
elongatae, pluriflorae. Flores parvi, pedicellati. Sepala 
et petala libera, inter se similia, patentia, anguste lan- 
ceolata. Labellum calearatum, simplex, concavum, lan- 
ceolatum, ecallosum, tepalis aequilongum; calear gracile, 
ex ore angusto cylindricum, labelli laminam superans vel 
aequans. Columna brevis, crassa, apice truncata; andro- 
clinium leviter excavatum, dorsum versus reclinatum; 
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