246 CXXXIII. ORCHIDEX (ROLFE). [Habenaria. 
97. H. decaptera, Reichb. f. in Flora, 1882, 531. Plant stout. 
Stem 20-24 in. high. Leaves appressed to the scape, long sheathing, 
firm, pilose, linear-lanceolate, acuminate, 34-6 in. long, the upper 
decreasing to the bracts. Racemes dense, many-flowered. Bracts long, 
lanceolate, acuminate or aristate, pellucid, scarious, 2 as long as the 
pedicels. Pedicels as long as or shorter than the spur. Flowers white, 
8 lin. diam. Dorsal sepal oblong, cuneate, concave, acute; lateral 
cuneate, rounded in front, apiculate on the posterior margin. Petals 
bipartite ; lobes obtuse; anterior lobe a little larger than the posterior. 
Lip trilobed; lobes oblong-lanceolate ; side lobes acute, otherwise 
like the petal lobes, a little smaller than the front lobe ; spur filiform, 
straight, 1-1} in. long; apex thickened. Stigmatic processes cochleate, 
truncate in front. Anther channels } longer than the stigmas. Ros- 
tellum linear, small, concealed under the anther.—Krinzl. in Engl. 
Jahrb. xvi. 90. 
Lower Guinea. Angola: Malange, Mechow, Rausch, 438. 
Only known to me from the published descriptions. 
98. H. occultans, Welw. ex Reichb. f. in Flora, 1865, 178. Plant 
14-2 ft. high. Leaves cauline, oblong-lanceolate, acuminate, 2—4 in. 
long, decreasing upwards. Racemes 4—5 in. long, with five to eight 
large flowers. Bracts leaf-like, oblong-lanceolate, acuminate, 13-2 1n. 
long. Pedicels 24-3 in. long. Dorsal sepal broadly ovate, cucullate, 
subacute, 7-8 lin. long; lateral deflexed, oblong-lanceolate, acuminate, 
7-8 lin. long. Petals bipartite; posterior lobe faleate-oblong, subacute, 
53-6 lin. long, erect, partly hidden within the dorsal sepal; anterior 
lobe obliquely triangular, acuminate, 2 lin. long. Lip tripartite; side 
lobes cuneate-linear, 9-10 lin. long, apical half broken up into 8-9, 
unequal filaments; front lobe linear-lanceolate, entire, 10 lin. long ; 
spur 5-54 lin. long, slender, slightly thickened above the middle, often 
descending into the bracts. Stigmatic processes stout, obliquely capitate, 
2 lin. long. Anther channels free from the side lobes of the rostellum, 
linear, 2} lin. long. Rostellum with subulate, incurved side lobes, which 
are hooked near the apex and 3} lin. long ; front lobe linear, obtuse, 1; 
lin. long.—Kriinzl. in Engl. Jahrb. xvi. 93. 
Lower Guinea. Angola: Huilla; swamps near the river Humpata, and near 
Lopolla, Welwitsch, 737! and without precise locality, Antunes, 15! : 
A remarkable species. Neither Reichenbach nor Kriinzlin correctly describe the 
petals, and the latter makes no mention of the remarkable side lobes of the rostellum. 
99. H. Soyauxii, Kränzl. in Engl. Jahrb. xvi. 93. Tuber ovoid. 
Plant strong, 20-28 in. high. Leaves bract-like, sheathing, many- 
nerved, oblong, subacute, 2-4 in. long, 7-12 lin. broad, decreasing 
upwards into the bracts. Racemes lax, remotely few-flowered. Pedicels 
3 in. long. Flowers among the largest of the genus, 14 in. long, } in- 
broad, sepals green, petals and lip white. Dorsal sepal ovate, acute, 
cucullate ; lateral deflexed, oval, suboblique, acute, pilose. Petals 
bipartite; posterior lobe linear-lanceolate, acute, nearly as long as the 
dorsal sepal and hidden within it: anterior lobe petaloid, lanceolate, 
