278 cxxxiii. ORCHIDE^ (brown). [JDisa. 



shaped limb J in. long, 3-4 lin. broad, arching forward, with a slender, 

 clavate spur 5 lin. long, ascending or horizontally directed from its 

 middle (i.e., 8-9 lin. above the base of the sepal). Lateral sepals 8-9 

 lin. long, 3 lin. broad, spreading and more or less ascending, oblong, 

 subacute and slightly hooded at the apex, obliquely attached at the 

 base. Petals 10-11 lin. long, broadly auricled at the base, linear above ; 

 the auricle 5 lin. long, 2J lin. broad, semicordate, tapering upwards ; 

 the linear part 5-6 lin. long, J— | lin. broad, channelled down the face, 

 with a double curve, first downwards or outwards, then upwards, at 

 the middle, obtuse. Lip 6 lin. long, i-J lin. broad, linear. Anther 

 erect, 2-3 lin. long, oblong. Rostellum short, truncate, folded between 

 the anther-cells. 



Wile Ziand. British East Africa: Ruwenzori, 6000-7000 ft., Scott-Mliot, 

 7809! 



Mozamb. Bist. British Central Africa : Pwambo, S. of Lake Tanganyika, 

 5250 ft., NuU .' Nyasaland ; between Kondowe and Karonga, 2000-6000 ft., Wkt/te, 

 348 ! Plateau of Mount Zomba, 5000-6000 ft,, Whi/te ! 



The Fwambo specimen is more slender than the others, with lanceolate acuminate 

 bracts as long as, or longer than, the flowers, and has dried a diflferent colour, but in 

 floral structure is indistinguishable. 



3. D. zombica, N. E. Brown. . Plant 1 J-2 ft. high, glabrous. 

 Leaves of barren shoot 5-7 in. long, 6-8 lin. broad. Leaves of stem 

 11-2 in. long, 8-9 lin. broad, ovate or lanceolate, acute or acuminate, 

 erect and somewhat appressed. Spike 6-7 in. long, IJ in. thick, 

 moderately dense. Flowers of moderate size. Bracts longer than 

 the flowers, li-2 in. long, 4-5 lin. broad, lanceolate, acuminate. 

 Dorsal sepal erect, 7-8 lin. long, with a channelled claw about 4 lin. 

 long, 1 J lin. broad, and a hooded limb 3—4 lin. long, 2J-3 lin. broad, 

 obtusely rounded at the apex, cuneate into the claw at < the base, 

 with a clavate, pendulous spur 2 J lin. long, f lin. thick, at the 

 junction of the limb and claw. Lateral sepals spreading and ascending, 

 7-7 J lin. long, 3-3J lin. broad, oblong, obtuse and concave at the apex, 

 obliquely attached at the base. Petals 7-8 lin. long, entire spathulate- 

 lanceolate, obtuse, with semicordate auricles at the base, 1^ lin. broad, 

 tapering above, the spathulate part IJ lin. broad. Lip 6J-7J lin. long, 

 I lin. broad, linear, obtuse. Anther erect, 2J lin. long, oblong. Kos- 

 tellum short, dorsally keeled between the anther-cells ; keel produced 

 into a minute tooth. 



Mozamb. Dist. British Central Africa : Nyasaland; Top of Zomba Mountain, 

 Buchanan 305! 



4. D. scutellifera, A. Rich, in Ann. Sc. Nat. ser., 2 xiv. 272, t. 18, 

 /. 1. Plant lJ-2 ft. high. Stem leafy to the top. Leaves longer than 

 the internodes, erect, their non-sheathing portion 3-3|^ in. long, 8-12 

 lin. broad, decreasing upwards, lanceolate-oblong or ovate-oblong, acute. 

 Bracts 1—1 J in. long, 5-6 lin. broad, lanceolate or oblong-lanceolate, 

 acuminate. Dorsal sepal 6-7 lin. long, 4 lin. broad, erect, rhomboid, 

 subacute, broadly boat-shaped ; spur slender, 4 lin. long, J lin. thick. 



