Anseltia.| CXXXIII, ORCHIDEE (ROLFE). 101 
Disc of lip with three crenulate or verrucose keels; sepals 
and petals 1-14 in. long . s . . . : 
Disc of lip with two keels, or the median one partially 
developed. 
Lip 7-8 lin. long; sepals and petals 10-12 lin. long. 
Leaves 1-14 ft. long; keels of lip verrucose or crenu- 
late S ` . . e 2 . 38 A. confusa, 
Leaves 6-8 in. long; keels of lip smooth . ° . 4. A. humilis. 
Lip 5 lin, long; sepals and petals 9 lin. long . i , 5. A. congoensis, 
2. A. nilotica. 
1. A. africana, Lindl. in Bot. Reg. 1844, sub t. 12. Pseudobulb 
elongate, somewhat thickened in the middle, 14—2 ft. or more long. 
Leaves elliptic-oblong or lanceolate, subacute, 6-12 in. long, 1}—13 in. 
broad. Panicle branched, 9-12 in. long, many-flowered. Bracts broadly 
ovate or ovate-oblong, subobtuse, 14-3 lin. long. Pedicels 1-14 in. long. 
Sepals elliptic-oblong, obtuse, 11-14 lin. long. Petals a little broader 
than the sepals. Lip trilobed, 8-9 lin. long; side lobes semiovate, 
obtuse; front lobe broadly obovate-oblong, obtuse; disc puberulous, 
with 3 linear keels, the middle one smaller than the side. Column 
clavate, 6 lin. long.— Bot. Mag. t. 4965 (excl. fig. 3); Beicht, f. in Bon- 
plandia, v. 134; Gartenfl. iii. 243, t. 95; Reichb. f. in. Walp. Ann. vi. 
627; Reichb. f. Xen. Orch. ii. 18; Will. Orch. Alb. viii. t. 367. 
Upper Guinea. Fernando Po: near Clarence (Sta, Isabel), in jungle, on Eleis 
guineensis, Vogel, 25! Ansell ! 
An Angolan species which has been referred here (Reichb, f. in Flora, 1865, 188) 
is known only from fruiting specimens, and therefore remains doubtful. It was col- 
lected at Bumbo, Welwitsch, 711! and Huilla, Antunes, 21! 
2. A. nilotica, A. E. Br. in Lindenia, ii. 36. Pseudobulb 1-2 ft. 
long, elongate, a little thickened above the middle. Leaves lanceolate 
or oblong-lanceolate, subacute, 6-15 in. long, 1-14 in. broad. Panicle 
9-18 in. long, branched or rarely simple, racemose. Bracts triangular- 
ovate, subobtuse, 14-2 lin. long. Pedicels 13-1} in. long. Flowers 
deep yellow, spotted with brown. Sepals oblong, obtuse, 1-1} in. long. 
Petals similar to the sepals, subequal. Lip trilobed, 9-10 lin. long ; 
side lobes semiovate, obtuse; front lobe obovate-oblong, obtuse; disc 
with 3 verrucose or crenulate keels, the middle one smaller than the 
Side. Column clavate, 8 lin. long.—<A. africana var. nilotica, Baker 
in Trans. Linn. Soc. xxix. 154; Reichb. f. Otia Bot. Hamb. ii. 74. 
Nile Land. British East Africa: Mombasa, Hildebrandt, 1952! Ribe, Wake- 
field! J omvu, Wakefield ! 
Mozamb. Dist. German East Africa: Usambara; Tanga, on Hyphene, Kirk! 
Usagara ; Mbwiga, 1200 ft., on tall trees, Grant / 
Var, rossiana, Rolfe in-Orch. Rev. i. 199. Flowers primrose yellow, with smaller 
and less numerous, much paler spots. 
Nile Land. Zanzibar, cultivated specimens ! 
“The Wahiao use its jointed roots medicinally, and call the plant BMitoo? oo 
Grant. 
