Holothrix. | CXXXIII. ORCHIDEZ (ROLFE). 193 
conical, small, Zi Las long as the limb.—Durand & Schinz, Conspect. 
Fl. Afr. v. 69, in part. ~ 
Nile Land. Abyssinia: Debra Erki, near Woina, on mountains, 7000 ft., 
Schimper,759 (ex Reichenbach). Begemeder ; Mt. Semayata, among grasses, Schimper, 
504! 
Clearly distinct from H. Richardii, Rolfe, with which it has been confused. 
7. H. Nyasz, Rolfe. Plant 9-10 in. high. Leaves 1 or 2 (2), 
orbicular or broadly cordate-orbicular, long pilose, about 3 in. long, 1 in. 
broad. Scapes 9-10 in. long, densely pilose ; racemes 2 in. long, secund, 
12-14-flowered. Bracts ovate, acute, 2 lin. long. Pedicels 2 lin. long. 
Sepals ovate, acute, pilose-ciliate, 11 lin. long. Petals cuneate-linear, 
2} lin. long; apex tricuspidate. Lip flabellate, 24 lin. long; apex 
shortly 7-lobed ; lobes triangular-linear. Column stout, 4 lin. long. 
Mozamb. Dist. Portuguese East Africa: mountains east of Lake Nyasa, 
Johnson ! 
8. H. tridentata, Reichb. f. Otia Bot. Hamb. ii. 119. Plant 
23-5 in. high. Tubers ovoid-globose, 3—4 lin. long. Leaves 2, radical, 
subopposite, orbicular, ciliate, 5-7 lin. long; the upper generally 
smaller than the lower. Scapes 24-5 in. long, retrorsely pilose, more 
pubescent above, without sheaths ; racemes }—1 in. long, 4—12-flowered. 
Bracts triangular-ovate, acute or subacuminate. Pedicels 1 lin. long. 
Sepals ovate, 1 lin. long; apex unequally tricuspidate ` side lobes short 
and obtuse; middle lobe longer, subulate. Petals broadly elliptic- 
oblong, 1} lin. long; apex very unequally tridentate; side lobes short 
and obtuse; middle lobe long, cuspidate. Lip 2 lin. long, broadly 
oblong below, upper half divided into 7 diverging, unequal, oblong, 
subobtuse lobes ; spur broadly conical, horizontal, somewhat curved, 
scarcely } lin. long. Column stout, 4 lin. long.—Peristylus tridentatus, 
Hook. f. in Journ. Linn. Soe. vii. 221. Platanthera tridentata, Eng). 
Hochgeb. Fl. Trop. Afr. 179. 
Upper Guinea. Cameroons: 7000 ft., Mann, 2128! 8000-11,000 ft., Johnston ! 
9. H. platydactyla, Kränzl. in. Engl. Jahrb. xvii. 66. Tubers 
small, globose. Leaves 2, subopposite, the upper rather smaller 
than the lower, 6-8 in. long, about as broad, thick and fleshy, sub- 
orbicular, acute or subobtuse; margin ciliate. Scapes 5-64 in. long, 
slender, densely pilose or villose, without sheaths; racemes 1 in. long, 
Subsecund, few-8-flowered. Bracts ovate-lanceolate, acuminate or 
aristate, 2 lin. long. Pedicels 14-2 lin. long. Sepals triangular-ovate, 
acute, 1 lin. long. Petals obliquely obovate-oblong, acuminate, with a 
tooth on either side above the middle, 1? lin. long. Lip 2 lin. long. 
flabellately 7-lobed, with obovate-oblong, obtuse lobes, the two outer 
shorter, narrower and more acute. Column very stout, 4 lin. long. 
Upper Guinea. Cameroons; Buea, in the grass region, 7200 ft., Preuss, 1036! 
10. Hl. pleistodactyla, Kriinzl. in Engl. Pf. Ost-Afr. C. 151. 
Plant 6-7 in, high. Leaves 2, subopposite, very unequal, the lower 
VOL. VII. o 
