Peristylus.'] cxxxiii. orchide^e (rolfe). 199 



little shorter than the lip, slightly flattened, obtuse. Rostellum 

 minute, compressed. — Platanthera volkensiana, Kranzl. in Engl. Pfl. 

 Ost-Afr. C. 151. 



ItXozamb. Blst. German East Africa: Kilimanjaro; Marangu, 9500 ft., 

 Vqlkens, 1262 ! 



3. P. petitianus, A. Rich, in Ann. Sci. Nat. ser. 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, J-5J in. 

 long, dense or somewhat lax. Bracts lanceolate, acuminate, 2^-6 lin. 

 long. Pedicels 1J-2J lin. long. Sepals ovate-oblong, obtuse, Ij lin. 

 long. Petals falcate-oblong, obtuse, 1 lin. long. Lip deeply trilobed 

 from a short, broad claw, IJ-lJ lin. long; lobes linear; side lobes 

 slightly longer than the front lobe, falcate, subacute ; spur oblong, | 

 lin. long. Column broad, h lin. long ; anther with very short 

 caudicles. Stigmatic lobes linear, small or minute. Rostellum very 

 short, tooth-like.— A. Rich. Tent. Fl. Abyss, ii. 28§, t. 84 ; Reichb. f . 

 in Walp. Ann. iii. 583. Platanthera 2)etitiana, Engl. Hochgeb. Fl, 

 Trop. Afr. 179. Habenaria petitiana, Durand & Schinz, Conspect. Fl. 

 Afr. V. 83. 



Wile Iiand. Abyssinia : Tigre ; mountains at Abba Gerima, near Adown, 

 Quartin- Billon (ex Richard), Province of Wodjerat, Quart in-Dillon Sc Petit, 229 ! 

 Semen j in the middle region descending from Eudjedcap towards Shoata, Schimper, 

 1257! without precise locality, Schimper, 597! Parkyns! Begemeder; Mt. Guna, 

 9500 ft., Schimper, 1317 ! Debra Tabor, 8500 ft., Schitnper, 1319 ! mountain slopes 

 near Galles Claudius (? Gottes Clausius), 7500 ft., Schimper, 1275 ! 



4. P. Preussii, Rolfe. Plant slender, IJ-lJ ft. high. Leaves 

 4-6, oblong-lanceolate, acuminate, l|-3 in. long, 5-10 lin. broad, 

 decreasing into sheaths below and into the bracts above. Spikes 

 2-3 J 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, Ij lin. long; front lobe very broadly triangular, 

 obtuse, much shorter than the side lobes, with a fleshy median keel ; 

 spur oblong, h lin. long. Column very broad; anther cells erect, sub- 

 parallel ; caudicles not produced. Stigmas sessile, very small. — 

 Platanthera Preitssii, Kranzi. in Engl. Jahrb. xvii. ij'3. 



Upper Guinea. Cameroons : West of Buea, 8200 ft., Preuss, 967 ! 



5. P. lefebureanus, A. Rich, in Ann. Sci. Nat. ser. 2, xiv. 266, 1. 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, |-U in. long, ^-1 in. broad. Spikes oblong, dense, A-U in. 

 long. Bracts "ovate-lanceolate, subacute, 2-4 J lin. long. Pedicels 2-3 

 lin. long. Sepals ovate-oblong, very obtuse, H 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 



