FLORA OF EASTERN TROPICAL AFRICA. 383 
losisque, margine scabridis; pedunculo albescente 5-pedali, striato 
basi arcte vaginato ; bracteis inferioribus distantibus subscariosis, 
pallidis acuminatis pedunculum arcte amplectantibus, superiori- 
bus fulvis patentibus, racemi autem laxiflori minoribus subulatis, 
superne deminutis; floribus inter majores, pedicellis bracteas 
superantibus ; sepalis ligulatis vix uncialibus, 5-nerviis, quam 
petala oblongo-ligulata longioribus ; labello subpollicari parte 
inferiore oblongo quam pars superior duplo longiore, hac autem 
subquadrata apiculata, basi angustiore cum callis lamelliformibus 
in venis insitis ; calcari brevi, obtuso, recurvato. 
Hab. Between Zanzibar and Uyui: W. E. Taylor, 1887. 
A fine plant with a creeping rhizome j-} in. thick, bearing 
scarious imbricating scales and long colourless air-roots, the latter 
a foot long by 2 lines in diameter. The pseudobulbous stem, 
borne 1 inch behind the peduncle, is 3 inches in length, and 
surrounded by large colourless acuminate sheathing leaves, the 
longest 5 inches; it bears three terminal curved falcate rigid 
leaves, 12-16 inches long, and 7 lines broad, but tapering above, 
with a keeled midrib and four lateral veins prominent on the 
striate lower surface and the margin markedly scabrid. The 
light-coloured terete peduncle is 5 feet long and 23 lines in 
diameter below, sheathed at the base and bearing on the lower 
half a few distant bracts with well-marked ribs converging to the 
acuminate apex, and margins united in the lower half, free and 
receding above but closely applied to the stalk ; the lowest is 1? 
inch long, the upper ones becoming shorter; on the upper half 
the bracts are narrowly triangular acuminate, spreading from the 
base, and light brown in colour with five darker veins, becoming 
narrower, shorter, and more subulate in the flowering portion, and 
gradually decreasing to the end of the peduncle; the flowers, 
about 16 in number, are scattered in a lax raceme a foot long, 
the stalk and ovary much exceed the bract, being 13 inch long in 
the lower flowers. The ligulate sepals are 5-nerved with a sub- 
aristate falcate apex, 11 lines long and 2 lines broad, the oblong- 
ligulate apiculate petals are 9 lines long by 2 broad, with three 
nerves running the whole length and 2 outer ones about ? the 
length. The spreading lip is 112 lines long, with a short, strongly 
recurved spur 33-4 lines long, in the lower two-thirds it is oblong, 
43 lines at its broadest, with several (5, including the thinner 
median one) prominent longitudinal veins, the outer ones on each 
side seuding ramifying branches towards the margin; the 
