Megaclinium.]| CXXXIII. ORCHIDEX (ROLFE). 39 
long, broadly winged ; apex with two minute teeth.—Ridl. in Journ. 
Bot. 1886, 292. M. purpuratum, Lindl. in Journ. Linn. Soc. vi. 128 ; 
Bot. Mag. t. 5936. 
Upper Guinea. Sierra Leone, Smeathman ! Afzelius! Niger Delta: Brass 
River, Barter, 1854! 
Lower Guinea. Island of St. Thomas, at Angolares, Quintas, 9! 
Lindley unfortunately transferred the name M, maximum to another species (see 
note under M. Lindleyi, Rolfe) and afterwards redescribed the present one as 
M. purpuratum. Barter records the flowers and whole spikes as purple, but in the 
Botanical Magazine figure both are light green with purple markings. 
6. M. oxypterum, Lindl. in Bot. Reg. 1839, Misc. 14. Rhizome 
stout. Pseudobulbs distant, oblong, acutely 4—5-angled, 14-2 in. long, 
2-leaved. Leaves oblong, obtuse, coriaceous, 3—4 in. long, 8-16 lin. 
broad. Scapes }-1 ft. long, with several tubular-spathaceous sheaths ; 
rhachis ensitorm or linear-oblong, narrowed above, somewhat thickened 
and coriaceous, 34—44 in. long, 5-7 lin. broad. Bracts triangular-ovate, 
acute, ultimately reflexed and the margins recurved, 2 lin. long. 
Flowers 2-3 lin. apart, yellow. Pedicels short. Dorsal sepal ovate- 
lanceolate, acuminate, concave, 24 lin. long; lateral ones broadly 
ovate, acuminate, concave, 2 lin. long; all nearly straight. Petals 
falcate-linear, acute, 14-14 lin. long. Lip linear oblong, subobtuse, from 
a broader denticulate base, 1 lin. long. Column 4 lin. long, broadly 
winged ` teeth short, obtuse.—Lindl. in Journ. Linn. Soc. vi. 128. 
Bulbophyllum oxypterum, Reichb. f. in Walp. Ann. vi. 258. 
Upper Guinea. Sierra Leone, Loddiges, cultivated specimen ! 
Lower Guinea. Princes Island, Barter, 2026! 
Closely allied to the preceding, which it much resembles. 
7. M. imschootianum, Rolfe in Kew Bulletin, 1895, 8. Pseudo- 
bulbs acutely triangular, oblong, 13 in. long, 8 lin. broad, 1-leaved. 
Leaves linear-oblong, obtuse, 6 in. long, 1} in. broad. Scape 10 in. 
long, with several sheaths towards the base; rhachis linear-oblong, 
acute, thin, 5-6 in. long, 7-8 lin. broad; margin obscurely crenulate. 
Bracts ovate-oblong, acute, 24-3 lin. long, at length reflexed, their 
margins very soon recurved. Flowers 3—4 lin. apart. Pedicels 14-2 lin. 
long. Dorsal sepal lanceolate-oblong, very acuminate, 5 lin. long; 
lateral ones ovate, very acuminate, 4 lin. long, 24 lin. broad ; apex 
reflexed. Petals falcate-lanceolate, shortly acuminate, 1} lin. long. 
Lip recurved, fleshy, linear-oblong, obtuse, minutely serrulate below the 
middle, 2 lin. long. Column short, very broadly winged, with two 
minute teeth near the apex. 
_ Habitat unknown, but probably some part of West Tropical Africa. It flowered 
in the collection of M. A. Van Imschoot in 1895. 
8. M. velutinum, Lindl. in Bot. Reg. 1847, sub t. 32. Pseudo- 
bulbs ovate, triangular. Leaves oblong-lanceolate, emarginate. Scape 
5 in. long, with several tubular basal sheaths; rhachis linear-oblong, 
subacute, obscurely crenulate, thin, minutely scaberulous, 34 in. long, 
