® 
Megaclinium. | CXXXIII, ORCHIDE& (ROLFE). 37 
Flowers arranged along the centre of the 
rhachis or nearly so. 
Rhachis 15-2 in. long, 23-3 lin, broad . 11. M. Millenii. 
Rhachis 2—4 in. long, 3—5 lin. broad. 
Pseudobulbs obscurely 4-angled; dorsal 
sepal subspathulate-oblong : . 12. M. falcatum. 
Pseudobulbs strongly 4-angled; dorsal 
sepal subulate-linear S < 13. M. Clarkei. 
Flowers much nearer one margin of the 
rhachis than the other, 
Petals linear or filiform acute. 
Petals falcate-linear; scape about 2 in. 
high : . : : : . 14. M. melanorrhachis. 
Petals filiform ; scape about 4 in. high . 15. M. pusillum. 
Petals with spathulate apex . : . 16. M. tentaculigerum. 
Pseudobulbs strongly 5-angled . ; : . 17. M. Melleri. 
Rhachis 8-10 in. long; flowers 6 lin. or more apart. 
Dorsal sepal lanceolate ; : ; . 18. M. Bufo. 
Dorsal sepal spathulate . S : . 19. M. Lindleyi. 
DOUBTFUL SPECIES. 
Rhachis 6 in. long, 1 in. broad, margin crenulate; flowers 
2 lin. apart . è : i S 2 . 20. M. platyrachis. 
1. M. leucorhachis, Rolfe in Kew Bulletin, 1891,198. Rhizome 
stout, creeping. Pseudobulbs ovoid-oblong, acutely 4-angled, 2} in. 
long, 1} in. broad, 1-leaved. Leaves linear-oblong, obtuse, 6-7 in. 
long, 1 in. broad. Scape erect, 6-7 in. long; rhachis falcate-ensiform, 
rather thick, obscurely crenulate, 3 in. long, 4 lin. broad, white. Bracts 
reflexed, ovate, obtuse, 24 lin. long. Flowers 14-2 lin. apart, yellow, 
velvety. Dorsal sepal subulate-linear, acute, 34 lin. long; lateral 
‘ones falcate-ovate, subacute, 2 lin. long. Petals falcate-linear, acute, 
24 lin, long. Lip recurved ; base broad, fimbriate ; apex linear-oblong, 
obtuse, 1 lin. long. Column 1 lin. long, winged ; teeth short, acute. 
Capsule oblong, 4 lin. long. 
Upper Guinea. Lagos, Moloney ! Millen, 189! 
Originally described from a cultivated specimen received from Sir Trevor 
Lawrence, 
2. M. imbricatum, Rolfe. Scapes nearly a foot long, with several 
tubular, nearly truncate sheaths; rhachis linear, flattened, rather 
fleshy, 24-3 in. long, with obtuse margins. Bracts ovate or triangular- 
ovate, obtuse, ultimately reflexed, imbricate, 2}-3 lin. long. Flowers 
‘approximate, deep purple, somewhat pubescent outside. Dorsal sepal 
lanceolate-linear, subobtuse ; lateral ones ovate-oblong, much shorter 
than the dorsal one; apex shortly acuminate and falcate. Petals 
filiform, incurved, hirsute, a little exceeding the lateral sepals. Lip 
recurved, ovate, acute, pectinate at the base. Column stout, teeth 
“apparently obtuse.—Bulbophyllum imbricatum, Lindl. Bot. Reg. 1841, 
Mise. 37; Beicht, f. in Walp. Ann, vi. 249. 
Upper Guinea. Sierra Leone, Loddiges, cultivated specimen ! 
A scape and sketch of the flower are preserved in Lindley’s Herbarium, which 
