164 CXXXIII. ORCHIDEE (ROLFE). [Listrostachys. 
4-5 lin. long. Column very stout, ł lin. long; rostellum triangular ; 
pollinia with 2 slender stipites, sometimes slightly adhering at the 
broader apex ; gland oblong.—Angræcum vesicatum, Lindl. in Bot. Reg. 
1843, Mise. 6; Journ. Linn. Soc. vi. 134; Reichb. f. in Walp. Ann. vi. 
905. 
Upper Guinea. Ashanti, Loddiges! Gold Coast: cultivated specimens, Bull ! 
Sander! Lower Niger: Asaba, Barter, 1839! Cameroons: Yaunde, Zenker, 610! 
Fernando Po, Mann, 646! 
36. L. fragrantissima, Reichb. f. in Flora, 1865, 189. Leaves 
ensiform-faleate, very coriaceous, 6-11 in. long, 8-12 lin. broad; apex 
oblique, very obscurely bilobed. Racemes elongate, rather stout, about 
1 ft. long, many-flowered. Bracts very shortly triangular, obtuse, con- 
fluent at the sides into aring. Pedicels 14 lin. long. Flowers opposite. 
Sepals ovate-lanceolate, very acuminate; dorsal 5 lin. long; lateral 
6 lin. long. Petals slightly shorter than the dorsal sepal. Lip broadly 
pandurate-ovate or nearly quadrate, strongly apiculate, crenulate, 
34-4 lin. long; spur 5 lin. long, base slender, apex suddenly and 
obliquely inflated, broad, compressed, half as broad as long. Column 
stout, 1} lin. long; rostellum subulate, short; pollinia with 2 slender 
stipites and a rounded gland. 
Lower Guinea. Angola: Pungo Andongo; rocks of Pedra Cabondo, 3400 ft., 
Welwitsch, 701! 702! 
According to Welwitsch, it hangs from moss- and lichen-covered rocks, and from 
branches at the foot of rocks, and is associated with Rhipsalis and Sarcostemma. 
37. L. Welwitschii, Reichb. f. in Flora, 1865, 190. Stems 
woody. Leaves closely imbricate, erect, rigid, conduplicate, shortly 
and subequally bilobed, 4-6 in. long. Racemes stout, elongate, 
pendulous, many-flowered, 9-10 in. long. Bracts opposite, broadly 
ovate-orbicular, very obtuse, 1-14 lin. long; sheaths at the base of the 
racemes longer and more ochreate than the bracts. Pedicels 14-2 lin. 
long. Flowers opposite. Sepals oblong-lanceolate, subacuminate, 
acutely keeled near the apex, 6-7 lin. long. Petals very similar to the 
sepals, but less acuminate, and not keeled, 5-6 lin. long. Lip broadly 
pandurate-ovate, retuse, with a carinate apiculus in the angle, 
denticulate, 5 lin. long and nearly as broad ; spur clavate, 5 lin. long. 
Column stout, 14 lin. long; rostellum subulate, shortly bifid ; pollinia 
with a pair of slender, curved stipites and a rounded gland. 
Lower Guinea, Angola: Pungo Andongo, frequent on rocks, Welwitsch, 703! 
The leaves above described are attached to the specimen in the British Museum. 
Other leaves mixed with the specimens are very different, and appear to belong bad 
L. fragrantissima, Reichb. f. 
38. L. Kirkii, Zolfe. Stem stout, pendulous. Leaves linear- 
oblong, obliquely subobtuse, somewhat faleate, 6-14 in. long, 1-1} in- 
broad. Scapes slender, 1-1} ft. long, lax, many-flowered. Bracts 
opposite, united in pairs into a broad ring, subobtuse, 3—1 lin. long. 
Pedicels 2 lin. long. Sepals and petals ovate-lanceolate, acute, 3 lin. 
