202 cxxxiii. ORCHIDE^. (rolfe). [Disperis. 



4 lin. long ; lateral sepals spreading, obliquely obovate, subapiculate, 

 4 lin. long, with a conical sac, J lin. long, near the inner margin. 

 Petals much curved, united to the margins of the dorsal sepal, auricu- 

 late at the base, much constricted below the triangular, acute, inflexed 

 apex. Lip with a slender claw, 3 lin. long ; basal sixth adnate ; limb 

 sharply reflexed, lanceolate, subobtuse, IJ lin. long, with somewhat 

 inflexed sides, keeled behind ; appendage situated above the base of the 

 limb, tooth-like, J lin. long, dilated at the base, with penicillate margin, 

 deflexed. Column very stout, 1 lin. long ; arms of rostellum subspathu- 

 late-linear, h lin. long. 



Upper Guinea. Cameroons : Buea, 3600-3900 ft., Frems, 609 ! 



9. D. nemorosa, Rendle in Journ. Bot. 1895, 297. Stem slender, 

 5-8 in. high, 2-leaved, with an acute sjieath near the base. Leaves 

 opposite, sessile, ovate, acute or acuminate, 1 in. long, 9—10 lin. broad. 

 Raceme very short, 2-flow^ered. Bracts ovate or ovate-lanceolate, acu- 

 minate. Pedicels G-8 lin. long. Dorsal sepal almost reduced to a 

 slender spur, 5 lin. long; lateral spreading, free, obliquely obovate- 

 elliptic, obtuse, 4 lin. long, with a conical sac \ lin. long on the 

 inner margin. Petals united to the margins of the dorsal sepal, auri- 

 culate at the base ; the free apex broadly rounded. Lip with a slender, 

 flattened claw, 4J lin. long ; adnate base very short ; limb sharply 

 reflexed, linear, 1 lin. long; appendage 4 J lin. long, directed to the 

 apex of the spur, linear to near the apex, then cuneately dilated, and 

 terminating in a pair of spreading, oblong, obtuse lobes, \ lin. long. 

 Column very stout, \ lin. long ; rostellum bilobed, with oblong, curved 

 arms, J lin. long. 



Nile Iiand. British East Africa : Ruwenzori ; at Wimi, 7000-8000 ft., in deej* 

 forest, Scott-miiot, 7944 ! 



10. D. Anthoceros, Reichh. f. Otia Bot. Hanth. ii. 103. Tuber 

 ovoid-oblong, G-8 lin. long. Stem stout, 5-9 in. high, 2-leaved, witli 

 an obtuse sheath near the base. Leaves opposite, subsessile, cordate- 

 ovate, subacute or apiculate, J-lJ in. long, 5-12 lin. broad. Racemes 

 2- or 1 -flowered. Bracts ovate, subacute or acuminate, 3-G lin. long. 

 Pedicels 5-8 lin. long. Flowers yellow-green. Dorsal sepal almost 

 reduced to an elongate-conical spur, 6-8 lin. long; lateral spreading, 

 obliquely obovate, apiculate, 4 lin. long, united to about the middle, 

 with a conical sac J lin. long on the inner margin. Petals falcate- 

 oblong, united to the margins of the dorsal sepal ; apex broadly rounded ; 

 base auriculate. Lip elongate-linear to the apex, 4J lin. long; adnate 

 base very short ; apex slightly toothed and partially reflexed, without a 

 free limb and appendage, as in the other tropical African species. 

 Column very stout, 1 lin. long ; rostellum bilobed, with linear-oblong 

 arms, J lin. long. 



Nile X.and. Abyssinia : Begemeder ; River Reb, 6500 ft., Schiniper, 1295 ! 

 Also found in Natal, 



