Disa.| CXXXIII. ORCHIDEZ (BROWN). 281 
sepals widely spreading and a little deflexed, 2-2} lin. long, 1-1} 
lin. broad, oblong; apex oblique, obtuse. Petals 14—13 lin. long, 
+ lin. broad, entire, lanceolate, acute or acuminate. Lip 1# lin. 
long, }—} lin. broad, linear-lanceolate, acute. Anther erect. Rostellum 
short, folded between the anther-cells.—D. kilimanjarica, Rendle in 
Journ. Linn. Soc. xxx. 399. D. polygonoides, Krinzl. in Engl. Pfl. Ost- 
Afr. C. 153, not of Lindl. 
Mozamb. Dist. German East Africa: Kilimanjaro, 6000—-10,000 ft., Kersten, 
Johnston, 5! 161! Taylor ! Marengu, 8000 ft., Volkens, 800! 
Allied to D. polygonoides, Lindl., but it may at once be distinguished from that 
species by its longer spur, and lanceolate, acute petals ; the venation of the sepals and 
petals is also different. 
9. D. Stairsii, Krénzl. in Gard. Chron. 1892, xii. 728. Plant 
about 2 ft. high, glabrous. Lower leaves ascending, 5-7 in. long, 7-14 
lin. broad, strap-shaped or lanceolate, acuminate, upper gradually 
smaller and becoming reduced to acuminate sheaths. Spike 3—4 in. 
long, 14-14 in. diam., rather lax. Bracts as long as or longer than 
flowers, 3-1? in. long, 34-5 lin. broad, lanceolate, acuminate. Dorsal 
sepal erect, 34-4 lin. long, 24 lin. broad, subhemispherical, hooded 
at the obtuse apex; spur slender, 8-9 lin. long, 2 lin. thick, pendu- 
lous, curved. Lateral sepals spreading and deflexed, 4 lin. long, 
2-2} lin. broad, oblong, obtuse with a short dorsal apiculus at the apex. 
Petals free or nearly so, 24 lin. long, 3 lin. broad, entire, falcate-oblong, 
obtuse or subacute. Lip 34-4 lin. long, 14 lin. broad near the apex, 
cuneate-oblong, obtuse. Anther horizontal, #-1 lin. long. Rostellum 
short, truncate, with a very slight fold between the anther-cells.— 
D. gregoriana, Rendle in Journ. Linn. Soc. 1895, xxx. 398. D. Wiss- 
mannii, Kränzl. in Engl. Pfi. Ost-Afr. ©. 154. D. Wissmanni, Kränzl. 
m Engl. Jahrb. xxii. 21. 
Nile Land. British East Africa: Mount Kenia, 10,400 ft., Gregory! Toru ; 
Yeria, 10,000 ft., Scott-Elliot, 7850! 7860! Ruwenzori ` Butagu Valley, 10,000- 
-12,000 ft., Scott-Elliot, 8058! Stairs, 51. 
Mozamb. Dist. German East Africa: Kilimanjaro ; Kifinika Volcano, Volkens, 
1893 ! 8000-10,000 ft., Volkens, 1171! 1948. 
10. D. saxicola, Schlechter in Engl. Jahrb. xx. Beibl. 50, 41. 
Plant 4—1 ft. high, glabrous. Stem flexuose, with 4-6 leaves. Leaves 
Spreading, 14-6 in. long, 3-8 lin. broad, linear-lanceolate or narrowly 
Strap-shaped, acuminate, strongly 3-5-nerved. Spike lax, elongating, 
about 2-4 in. long, 8-9 lin. diam. Bracts 4—5 lin. long, 13-2 lin. broad, 
ovate-lanceolate, acute. Flowers small. Dorsal sepal erect, 24-24 lin. 
long, about 11 lin. broad, hooded at the apex, dorsally tapering into a 
Straight, slender spur, horizontal or more or less directed downwards, 
3 lin. long, conical at the base. Lateral sepals apparently directed 
forwards, 2-21 lin. long, about 1 lin. broad, oblong, obtuse, concave, 
hooded at the apex with a dorsal apiculus. Petals entire, 14-14 lin. 
long, 2 3 lin. broad, oblong, obtuse; apex incurved; posterior margin 
nearly straight; anterior margin broad and shallowly emarginate. Lip 
