Peristylus. | CXXXIII. ORCHIDEX (ROLFE). 199 
little shorter than the lip, slightly flattened, obtuse. Rostellum 
minute, compressed.—Platanthera volkensiana, Kränzl. in Engl. Pf. 
Ost-Afr. C. 151. 
Mozamb. Dist. German East Africa: Kilimanjaro; Marangu, 9500 ft., 
Volkens, 1262! 
3. P. petitianus, A. Rich. in Ann. Sci. Nat. sér. 2, xiv. 266. 
Plant 6-21 in. high, leafy, with several sheaths near the base. Tuber 
ovoid-oblong, or globose. Leaves ovate or broadly elliptic-oblong, 
obtuse, apiculate or subacute. Racemes oblong or elongate, 3-54 in. 
long, dense or somewhat lax. Bracts lanceolate, acuminate, 24—6 lin. 
long. Pedicels 14-24 lin. long. Sepals ovate-oblong, obtuse, 14 lin. 
long. Petals falcate-oblong, obtuse, 1 lin. long. Lip deeply trilobed 
from a short, broad claw, 14-1} lin. long; lobes linear; side lobes 
slightly longer than the front lobe, falcate, subacute; spur oblong, $ 
lin. long. Column broad, + lin. long; anther with very short 
caudicles. Stigmatic lobes linear, small or minute. Rostellum very 
short, tooth-like.—A. Rich. Tent. Fl. Abyss. ii. 288, t. 84; Reichb. f. 
in Walp. Ann. iii. 583. Platanthera petitiana, Engl. Hochgeb. FI, 
Trop. Afr. 179. Habenaria petitiana, Durand & Schinz, Conspect. FI. 
wit, v. 83. 
Nile Land. Abyssinia: Tigre; mountains at Abba Gerima, near Adowa, 
Quartin-Dillon (ex Richard), Province of Wodjerat, Quartin-Dillon & Petit, 229! 
Semen ; in the middle region descending from Endjedcap towards Shoata, Schimper, 
1257! without precise locality, Schimper, 597! Parkyns! Begemeder; Mt. Guna, 
9500 ft., Schimper, 1817! Debra Tabor, 8500 ft., Schimper, 1319! mountain slopes 
near Galles Claudius (? Gottes Clausius), 7500 ft., Schimper, 1275! 
4. P. Preussii, Rolfe. Plant slender, 14-1} ft. high. Leaves 
4-6, oblong-lanceolate, acuminate, 13-3 in. long, 5-10 lin. broad, 
decreasing into sheaths below and into the bracts above. _ Spikes 
2-3} in. long, many-flowered. Bracts lanceolate, acuminate, 3-5 lin. long. 
Pedicels 3 lin. long. Sepals ovate, obtuse, 1} lin. long. Petals ovate- 
oblong, obtuse, 1} lin. long. Lip trilobed ; side lobes falcate-lanceolate, 
acute, diverging, 1} lin. long; front lobe very broadly triangular, 
obtuse, much shorter than the side lobes, with a fleshy median keel ; 
Spur oblong, $ lin. long. Column very broad; anther cells erect, sub- 
parallel; caudicles not produced. Stigmas sessile, very small.— 
Platanthera Preussii, Kränzi. in Engl. Jahrb. xvii. 63. 
Upper Guinea. Cameroons: West of Buea, 8200 ft., Preuss, 967 ! 
5. P. lefebureanus, A. Rich. in Ann. Sci. Nat. sér. 2, xiv. 266, t. 16, 
Jig. 3. Plant 3-6 in. high, leafy in the middle, with several sheaths 
below. Leaves ovate or broadly ovate-oblong, obtuse, subacute or 
apiculate, 3-14 in. long, 3-1 in. broad. Spikes oblong, dense, 4—14 in. 
long. Bracts ovate-lanceolate, subacute, 2-44 lin. long. Pedicels 2-3 
lin. long. Sepals ovate-oblong, very obtuse, 14 lin. long. Petals 
broadly ovate, very obtuse, 1 lin. long. Lip nearly square, with a 
shortly trilobed apex, 1 lin. long; lobes broadly triangular-ovate, very 
