Poffonia.] cxxxiii, ORCHiDEiE (rolfe). 187 



renschiana^ Reichb. f., and P. umbrosa, Reichb. f. Lip tiilobed ; front 

 lobe crisped, oblong, porrect ; keels 2, distant, extending the whole length 

 of the disc. Column broad, not dilated at the fovea. — Durand k 

 Schinz, Conspect. Fl. Afr. v. 51) (^^ viridijiora.'^) 



jMO-wer 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. 



?). P. shirensis, i?o^/e. Scapes tall; apex 1-2-fiowered ; base not 

 seen. Bracts linear-lanceolate, acuminate, |-1 in. long. Pedicels (1-8 

 lin. long. Sepals oblong-lanceolate, acute, IJ-H in. long. Petals 

 similar to, but a little smaller than, the sepals. Lip broadly obovate, 

 trilobed, 1|-H 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, 1 in. long. 



Mozamb. 3>lst. 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, 14-10 lin. long. Petals 

 similar to, but a little shorter than, the sepals. Lip broadly obovate, 

 subtrilobed at the apex, 1 in. long, 8-0 lin. broad ; side lobes obtuse ; 

 front lobe ovate-oblong, strongly reflexed, somewhat fleshy ; disc with 

 2 acute keels from the base to near the apex. Column clavate, | lin. 

 long. 



Mozamb. 3>lst. British Central Africa : Nyasaland, Buchanan, 1342 1 



T). P. Thouarsii, Blume, Coll. Orch. Archijy. Ind. 152, t. 59, 

 fiy. 1. Plant 2-3 in. high. Leaves broadly cordate, subobtuse, 

 somewhat repand, about If 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-(i lin. long. Lip broadly cuneate-oblong, truncate, or obscurely 

 trilobed at the apex and fimbriate, 5-0 lin. long, 2^-3 lin. broad ; 

 disc with several crenulate diverging nerves. Column clavate, 

 3 J -4 lin. long. — Arethusa simplex, Thou. Orch. lies Afr. t. 24. Poyonict 

 simpler, Reichb. f. Xen. Orch. ii. 92. 



Upper Guinea. Sierra Leone ; without precise locality, Afzelitis ! 



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. 



0. P. Kotschyi, Reichb. f. in Oestr. Bot. Zeitschr. 1804, 338. 

 Flowers 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 papillae upon the three thickened median nerves ; lobes triangular, 



