Disa.] cxxxiii. ORCHiDEiE (brown). 281 



sepals widely spreading and a little deflexed, 2-2 J lin. long, 1-1 J 

 lin. broad, oblong; apex oblique, obtuse. Petals lj-l| lin. long, 

 i lin. broad, entire, lanceolate, acute or acuminate. Lip 1| lin. 

 long, J-Jlin. broad, linear-lanceolate, acute. Anther erect. Rostelluai 

 short, folded between the anther-cells. — D. kilimanjarica, Rendle in 

 Journ. Linn. Soc. xxx. 399. D. polygonoides, Kranzl. 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, Kranzl. 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, 1 J-l|^ in, diam., rather lax. Bracts as long as or longer than 

 flowers, |-lj in. long, 3J-5 lin. broad, lanceolate, acuminate. Dorsal 

 sepal erect, 3J-4 lin. long, 2^ lin. broad, subhemispherical, hooded 

 at the obtuse apex ; spur slender, 8-9 Hn. long, § 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, 2J lin. long, | lin. broad, entire, falcate-oblong, 

 obtuse or subacute. Lip 3J-4 lin. long, 1 J 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, Kranzl. in Engl. Pfl. Ost-Afr. C. 154. D. Wissmanni, Kranzl. 

 in Engl. Jahrb. xxii. 21. 



wile Iiand. British East AfricjC : Mount Kenia, 10,400 ft., Gregory ! Toru ; 

 Yeria, 10,000 ft., Scott-MUot, 7850 ! 7860 ! Ruwenzori ; Butagu Valley, 10,000- 

 12,000 ft., Scott-mUot, 8058 ! Stairs, 51. 



Mozamb. 3>lst. German East Africa : Kilimanjaro ; Kiiinika Volcano, Volkens, 

 1893 ! 8000-10,000 ft., Volkens, 1171 ! 1948. 



10. D. saxicola, Schlechter in Engl. Jahrh. xx. Beihl. 50, 41. 

 Plant \-\ ft. high, glabrous. Stem flexuose, with 4-0 leaves. Leaves 

 spreading, lJ-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, H-2 lin. broad, 

 ovate -lanceolate, acute. Flowers small. Dorsal sepal erect, 2\-2h lin. 

 long, about 1^ 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 directetl 

 forwards, 2-2| lin. long, about 1 lin. broad, oblong, obtuse, concave, 

 hooded at the apex with a dorsal apiculus. Petals entire, U-lJ lin. 

 long, |-f lin. broad, oblong, obtuse; apex incurved ; posterior margin 

 nearly straight ; anterior margin broad and shallowly emarginate. Lip 



