Megaclinium.] cxxxiii. orchide.e (rolfe). 37 



Flowers arranged along the centre of the 

 rhachis or nearly so. 

 Rhachis li-2 in. long, 2^-3 liu. 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 . . .13. M. Clarkei. 



Flowers much nearer one margin of the 

 rhachis than the other. 

 Petals linear or filiform acute. 



Petals falcate-linear J scape about 2 in. 



hio-h .... . . 14. M. melanorrhachia. 



Petals filiform ; scape about 4 in. high . 15. M. pusillum. 

 Petals with spathulate apex . . . . 16. M. tentaculigerum. 



Pseudobulbs strongly 5-angled . . . . 11. M. Melleri. 



Rhachis 8-10 in. long ; flowers 6 Un. or more apart. 



Dorsal sepal lanceolate 18. Jf. Bufo. 



Dorsal sepal spathulate 19. 3f. Lindleyi. 



DOUBTFUL SPiiClES. 



Rhachis 6 in. long, 1 in. broad, margin crenulate; flowers 



2 hn. apart 20. M. plati/rachis. 



1. M. leucorhachis, Eolfe in Kew BuUetin, 1891, 198. Rhizome 

 stout, creeping. Pseudobulbs ovoid-oblong, axjutely 4-angled, 2i in. 

 long, \\ 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. Brax3ts 

 reflexed, ovate, obtuse, 2^ lin. long. Flowers lJ-2 lin. apart, yellow, 

 velvety. Dorsal sepal subulate-linear, acute, 'dh lin. long ; lateral 

 ones falcate-ovate, subacute, 2 lin. long. Petals lalcate-linear, acute, 

 2^ 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. 



Vpper 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, 2-J-3 in. long, with obtuse margins. Bracts ovate or triangular- 

 ovate, obtuse, ultimately reflexed, imbricate, -Ih-'d 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. — BuLhophyllum imhricatum^ Lindl. Bot. Reg. 1841, 

 Jdisc. 37; Reichb. 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 



