Disa. | CXXXIII. ORCHIDEZ (BROWN). 285 
1-1} lin. broad, lanceolate, acuminate. Flowers rather small, pink. 
Dorsal sepal erect, 34 lin. long, 13-2 lin. broad, helmet-shaped, dorsally 
produced into a stout, compressed spur, 14-2 lin. long, 14—13 lin. broad, 
oblong, obtuse, ascending when in position on the spike, the whole sepal 
measuring 33-4 lin. from the apex to the tip of the spur. Lateral 
sepals deflexed, divergent, 2—24 lin. long, 14-14 lin. broad, obliquely or 
subfalcately oblong, concave, subacute, with a subulate dorsal apiculus 
1 lin. long just below the apex. Petals 2-24 lin. long, rather more 
than } lin. broad in the lower part, and 1 lin. or more broad at the 
apex ` lower half oblong, auricled at the base; apical half obliquely 
ovate, subobtuse, directed forwards. Lip 24 lin. long, ł lin. broad, 
narrowly oblong, with reflexed or replicate sides, apex obtuse, bent 
downwards, cuneately narrowed into a short stalk at the base, obtusely 
keeled down the middle. Anther horizontal, 1 lin. long, suborbicular. 
Rostellum very short and broad, subtruncate, slightly folded between 
the anther-cells. 
Mozamb. Dist. British Central Africa: Nyasaland ; Mount Zomba, 4000—6000 
ft., Whyte! Mount Malosa, 4000-6000 ft., Whyte ! 
Allied to D. equestris, Reichb, f., but readily distinguished by its narrower 
bracts, shorter spur, and long apiculus to the lateral sepals, 
18. D. pulchella, Hochst. ex A. Rich. Fl. Abyss. ii. 301, t. 93. 
Plant 4-16 in. high, glabrous. Leaves 3~8, scattered, erect, the lower 
3-34 in. long, 6-13 lin. broad, varying from lanceolate to elliptic- 
oblong, acute, the others gradually decreasing upwards. Spike 14-43 
in. long, 7-9 lin. thick, dense. Bracts shorter than flowers or about 
equal, 5-8 lin. long, ovate-lanceolate, acuminate. Flowers rather 
small. Dorsal sepal 24-3 lin. long, 2-4 lin. broad at the mouth, 
Suborbicular or transverse oblong, helmet-shaped; spur erect or 
ascending, moderately stout, 2-3 lin. long, 4—4 lin. broad, slightly 
compressed, straight, obtuse. Lateral sepals deflexed, divergent, 3-34 
lin. long, 14-2 lin. broad, oblong or cuneate-oblong, obtuse, with 
a compressed dorsal apiculus 4—2 lin. long just below the apex, margins 
often reflexed or revolute. Petals 14-24 lin. long, 14-1? lin. broad 
at the apex, somewhat oblong, auricled at the base, dilated at the 
Subtruncate apex; posterior margin concave; anterior margin more 
or less broadly emarginate. Lip 24-3 lin. long, linear-oblanceolate or 
Spathulate-obovate, obtuse, keeled down the face from the margins 
being replicate. Anther horizontal. Rostellum bilobed, lobes large and 
triangular, adnate to the base of the petals——Walp. Ann. iii. 590; 
Ridley in Journ. of Bot. 1886, 296. 
Nile Land. Abyssinia: Tigre; Sholoda Mountain, near Adowa, Quartin- 
Dillon (ex Richard); Semen; uear Enjedcap, Schimper, 1192! Wodjerat Dist., 
Quartin-Dillon & Petit, 100! Begemeder; Debra Tabor, 8500 ft., Schimper, 
1316! and without precise locality, Schimper, 600! 
The flowers vary in colour, in the type (Schimper, 1192) they are whitish or 
pallid, spotted with dark purple in all parts, whilst Schimper’s 1316 has the lateral 
sepals and apical part of the lip entirely of a dark purple colour, but there is no 
structural difference between them. 
