Disperia.] cxxxiii. orchide.e (rolfe). 289 



frequently penicillate or papillose at the apex. These peculiarities are evidently 

 connected with the fertilisation of the flower, the details of which are at present 

 unknown. 



Leaf solitary . . . . . . . .1. JD. crassicaidis. 



Leaves two or three, alternate. 

 Dorsal sepal distinctly saccate. 

 Limh of lip lanceolate or ovate. 



Limb of lip with rounded auricles . . .2. D. galerita. 

 Limb of lip without auricles. 



Appendage of lip bilobed . . . . 3. D. Meirax. 



Appendage of lip obtuse . . . . 4. i). kilimanjarica. 



Limb of lip divergently 2-armed . . . . 5. Z). reichenbachiana. 



Dorsal sepal slightly gibbous . . . . . Q. D. Johnstoni. 



Leaves two opposite. 



Spur short, broad and curved 7. D. Kerstenii. 



Spur long, tapering, and straight. 



Lip sharply reflexed ; spur under \ in. long. 



Limb of lip lanceolate, much larger than the 



tooth-like appendage . . . . 8. 2). Preussii. 



Limb of lip linear, much smaller than the bilobed 



appendage . . . . . . 9. D. nemorosa. 



Lip not reflexed ; spur over \ in. long . . .10. D. Anthoceros. 



1. D. crassicauliSy Reichb. f. in Linncea, xxii. 860. Stem stout, 

 2-3 J in. high, 1 -leaved. Leaves alternate, sessile, broadly cordate 

 orbicular, J-1 in. broad. Racemes 2- or 1 -flowered. Bracts ovate or 

 ovate-oblong, obtuse, 4-7 lin. long. Pedicels 3—4 lin. long. Dorsal 

 sepal confluent with the petals into a broad hood, 3-4 in. long ; sides 

 broadly rounded ; inflexed apex with a tooth-like apiculus ; lateral 

 sepals spreading, obliquely and broadly oblong, apiculate on one side 

 above the middle, gibbous or subsaccate close to the apiculus, 4 lin. 

 long. Petals confluent with the dorsal sepal. Lip with slender claw, 

 2 lin. long; upper third free; limb sharply reflexed, \\ lin. long, 

 narrow and recurved in front, dilated with reflexed sides and rounded 

 auricles behind, puberulous; appendage triangular-oblong, J lin. long, 

 curved towards the mouth of the galea, puberulous. Column very 

 broad. If lin. long ; arms of rostellum linear-oblong, curved, 1 lin. long. 

 — Walp. Ann. iii. 593; Engl. Hochgeb. El. Trop. Afr. 18G. Pterij- 

 yodium hiflorum, Hochst. ex A. Rich. Tent. Fl. Abyss, ii, 303. 



srile Itand. Abyssinia: Tigre ; Mt. Sholoda, near Adowa, Quartin-DiUon (ex 

 Richard) ; Semen ; mountainous region between Enjedcap and Shoata, Schanper, 

 570! 



2. D. galerita, Reichb. f. Otia Bot. Hamb. ii. 103. Stem 3-G in. 

 high, 3-4-leaved. Leaves alternate, sessile, ovate or ovate-oblong, 

 obtuse or apiculate, 7-14 lin. long, o-l lin. broad, the lower one re- 

 duced to a sheath. Raceme 3-flowered. Bracts like the leaves, and 

 only a little smaller. Pedicels 3 lin. long. Flowers rose-purple. Dorsal 

 sepal galeate, 5 lin. long, prolonged behind into an oblong, obtuse sac, 

 1 lin. long ; apex incurved, acute ; lateral spreading, oblique, semi- 

 ovate, subacute, 3 J lin. long, produced behind near the inner margin 

 into an obtuse sac, 1 lin. long. Petals falcate-oblong, obliquely apicu- 



