Pogonia. | CXXXIII, ORCHIDEE (ROLFE). 187 
renschiana, Reichb. f., and P. umbrosa, Reichb. f. Lip trilobed; front 
lobe crisped, oblong, porrect ; keels 2, distant, extending the whole length 
of the disc. Column broad, not dilated at the fovea——Durand & 
Schinz, Conspect. Fl. Afr. v. 59 (“ viridiflora.”) 
Lower Guinea. Angola: Malange, Mechow, 298, 
I have not seen a specimen of this, but the differences pointed out by Reichenbach 
between it and P. umbrosa are trifling. 
3. P. shirensis, Rolfe. Scapes tall; apex 1—2-flowered; base not 
seen. Bracts linear-lanceolate, acuminate, 3—1 in. long. Pedicels 6-8 
lin. long. Sepals oblong-lanceolate, acute, 1}-14 in. long. Petals 
similar to, but a little smaller than, the sepals. Lip broadly obovate, 
trilobed, 14-14 in. long, and nearly as broad ; lobes broadly rounded ; 
front one crenulate ; disc with 2 narrow, ciliolate keels from the base 
to the middle. Column clavate, | in. long. 
Mozamb. Dist. British Central Africa: Shire Highlands, not plentiful, 
Buchanan, 317! 
4. P. Buchanani, Rolfe. Plant about 1 ft. high. Scapes bear- 
ing about 3 loose, ovate, acute sheaths, and 2 large flowers at the 
apex. Bracts linear-lanceolate, long acuminate, 9-13 lin. long. 
Pedicels 4 lin. long. Sepals lanceolate, acute, 14-16 lin. long. Petals 
Similar to, but a little shorter than, the sepals. Lip broadly obovate, 
subtrilobed at the apex, 1 in. long, 8-9 lin. broad; side lobes obtuse ; 
front lobe ovate-oblong, strongly reflexed, somewhat fleshy ; dise with 
ag keels from the base to near the apex. Column clavate, } lin. 
ong. 
Mozamb. Dist, British Central Africa: Nyasaland, Buchanan, 1342! 
5. P. Thouarsii, Blume, Coll. Orch. Archip. Ind. 152, t. 59, 
jig. 1. Plant 2-3 in. high. Leaves broadly cordate, subobtuse, 
Somewhat repand, about 1} in. broad, with broad, obtuse, basal 
angles. Scapes 2—3 in. high, slender, 1-flowered, with 1 or 2 narrow 
basal sheaths. Bract narrow, sheath-like, subacute, 2—4 lin. long. 
Pedicels 6—9 lin. long. Sepals and petals linear-lanceolate, acute, 
5-6 lin, long. Lip broadly cuneate-oblong, truncate, or obscurely 
trilobed at the apex and fimbriate, 5-6 lin. long, 24-8 lin. broad ; 
dise with several crenulate diverging nerves. Column clavate, 
3}—4 lin. long.—Arethusa simplex, Thou. Orch. Iles Afr. t. 24. Pogonia 
sumplex, Reichb. f. Xen. Orch. ii. 92. 
Upper Guinea. Sierra Leone ; without precise locality, Afzelius ! 
Also found in Mauritius, if the African specimens are identical, and I am unable to 
Separate them from the plant figured by Thouars. Specimens, however, are wanting for 
Comparison. 
6. P. Kotschyi, Reichb. f. in Oestr. Bot. Zeitschr. 1864, 338. 
owers racemose, greenish, with the lip white, nerved with violet- 
purple. Sepals ligulate, acute. Petals slightly shorter than the 
Sepals. Lip oblong-flabellate, trifid at the apex, smooth except for a 
few papillz upon the three thickened median nerves; lobes triangular, 
