Listrostachys. | CXXXIII. ORCHIDE® (ROLFE). 163 
9-12 in. long, many-flowered. Bracts ochreate, very short, broad, 
truncate, almost obsolete. Pedicels 2 lin. long. Flowers yellow. 
Sepals and petals oblong, obtuse, fleshy, 132 lin. long. Lip broadly 
oblong ; apex tridentate or obtuse, fleshy; spur curved, slender at the 
base, 5 lin. long; apex clavately inflated. Column very stout, ? lin. 
long ; stipites “ linear, didymous.”—Angrecum vagans, Lindl. in Journ. 
Linn. Soe. vi. 135. 
Lower Guinea. Princes Island, Barter, 1988! 
According to Barter, it covers many of the small islets which abound near the 
shore, and has yellow and insignificant flowers. 
Allied to Z. vesicata, Reichb. f., but the leaves are very different. Lindley 
describes the lip as like the sepals and petals, but I find it broader and tridentate. 
33. L. thomensis, folfe. Acaulescent. Leaves linear, 5-6 in. 
long, 5-7 lin. broad. Racemes pendulous, 1 ft. long, many-flowered. 
Bracts broadly ovate, 14 lin. long. Pedicels 3 lin. long. Dorsal sepal 
elliptic-oblong, obtuse, 24 lin. long; lateral oblong, subacute. Petals 
linear, obtuse. Lip ovate, obtuse, 2 lin. long; spur subclavate, slightly 
curved, 4 lin. long. Column short; pollen not seen. Capsule 
pedicelled, triquetrous, curved, 4—5 lin. long.—Angrecum thomense, Rolfe 
in Bolet. Soc. Brot. ix. 141. 
Lower Guinea. St. Thomas, Quintas ! 
Allied to Z. ichneumonea, Reichb. f. 
34, L. ichneumonea, Reichb. f. in Gard. Chron. 1887, ii. 681 
(in note). Stems short, thick. Leaves oblong-lanceolate, coriaceous, 
9-12 in. long, 1-1} in. broad; apex suboblique and _ subobtuse. 
Racemes pendulous, slender, 14-14 ft. long, many-flowered. Bracts 
broadly ovate, apiculate, 3 lin. long. Pedicels 2 lin. long. Sepals - 
ovate-oblong, subobtuse. Petals linear-oblong, subobtuse or apiculate, 
2} lin. long. Lip oblong, 24 lin. long; apex shortly trilobed; front 
lobe, oblong, obtuse ; side lobes broad, 3-toothed or somewhat truncate ; 
Spur curved, 8 lin. long, basal half slender, apical half inflated, clavate- 
oblong, laterally compressed. Column stout, 3 lin. long; pollinia with 
2 slender stipites attached to a single gland.—Angrecum ichneu- 
moneum, Lindl. in Journ. Linn. Soc. vi. 136; Reichb. f. in Gard. 
Chron. 1887, ii. 681. 
Upper Guinea. Niger Delta: Banks of the Nun River, Mann, 520! 
35. L. vesicata, Reichb. f. in Flora, 1865, 190. Stems very short. 
Leaves elongate-linear, a little attenuate and subobtuse, subcuneate 
below, 9-11 in. long, 5-10 lin. broad, Racemes slender, pendulous, 
6-11 in. long, many-flowered. Bracts opposite, } lin. long, each pair 
united into a single, ochreate, truncate, amplexicaul body. Pedicels 
2 lin, long. Flowers green, opposite. Sepals ovate, apiculate, 14 lin. 
Jong, fleshy; dorsal broadly cucullate. Petals ovate-oblong, apicu- 
late, fleshy, smaller than the sepals. Lip oblong or linear-oblong, 
Subobtuse, fleshy, base broader and subauriculate, 1} lin, long; spur 
Curved, slender at the base, apex obovoidly inflated, subcompressed, 
