ISG cxxxiii. ORCHiDE.^ (rolfe). [Pogonitt, 



27. POGONIA, Juss. ; Benth. et Hook. f. Gen. PI. iii. (U:). 



Sepals subequal, free, erect or rarely spreading. Petals similar to 

 the sepals, or often broader or shorter, ei-ect or declinate. Lip erect 

 from the base of the column, free, without a spur, sessile or unguiculate, 

 entire or trilobed ; side lobes sometimes enfolding the column ; disc 

 variously crested or lamellate. Column elongated, slightly clavate at 

 the apex, without wings ; clinandrium more or less elevated, entire or 

 denticulate. Anther somewhat stipitate on the margin of the clinan- 

 drium, more or less incumbent, obtusely conical or subglobose, imper- 

 fectly 2 -celled ; pollinia granular, 2, sometimes confluent into one, not 

 tailed, free or sessile on the rostellum. Stigma oblong or broad ; 

 rostellum short. — Terrestrial herbs. Rhizomes tuberiferous. Leaves 1 

 to few, very various in shape, often not appearing until after the 

 flowers. Flowers medium-sized or large, solitary or in erect or pen- 

 dulous racemes. - Bracts often small. 



A genus of about 60 species, widely dispersed through the tropics, with a few 

 temperate representatives in North and South America and Japan. 

 Side lobes of lip rounded, oblong or obscure, obtuse. 

 Scapes over ^ ft. high. 

 Flowers in racemes. 



Column dilated above . . . . . 1. P. umbrosa. 



Column not dilated above . . . . 2. P. viridijlava. 



Flowers 1 or 2 at the summit of the scape. 



Front lobe of lip broad and nearly flat . . 3. P. shirensis. 



Front lobe of lip narrow and strongly reflexed . 4. P. Buchanani. 

 Scapes 2-3 in. high . . . . . . 5. P. Thouarsii, 



Side lobes of lip triangular, acute . . . . 6. P. Kotschyi. 



1. P. lunbrosa, Reichh. f. in Flora, 18(57, 102. Tuber ovoid 

 globose. Leaf solitary, long petiolate ; limb broadly ovate-reniform 

 or flabellate, repand or sinuate, more or less broadly apiculate or acute, 

 o^-G in. long, 2|-7 in. broad ; petioles I4-8 in. long. Scapes 1^-2|- ft. 

 long; raceme 2-8 in. long, o-12-fiowered. Bracts linear or linear- 

 laneeolate, acuminate, i-1 in. long. Pedicels slender, 8-4 lin. long. 

 Flowers light green with a purple -veined white lip. Sepals lanceolate, 

 acute, or subacuminate, 10-1:5 lin. long. Petals similar to, but a little 

 shorter than, the sepals. Lip subtrilobed, 1 in. long, J in. broad ; side 

 lobes broadly rounded ; front lobe ovate-triangular, acute ; disc with a 

 pair of slightly thickened keels from the base to the middle. Column 

 slightly curved, a little thickened above, 4 lin. long ; filament of the 

 anther slender, 1 ^, lin. long. Capsule broadly elliptic-oblong, 6-7 lin. long.. 



Upper Guinea. Sierra Leone, near Falaba, Scott-Elliot, 5119 ! Niger Terri- 

 tory : Nupe, among grass and low shrubs in shady places. Barter, 1540 ! 



liODirer Guinea. Princes Island, Mann, 1149! St. Thomas, 1300 ft,, Quinia.s; 

 4! 5! 131 near Fazenda do Monte Caffe, Welwitsch, 739! Island of Rolas; on Mount 

 GreefT, Quintas, 63 ! Angola : Pungo Andongo ; near the River Quilonga, in woods,. 

 IVclwit.sch, 738 ! 



Very near to the South African P. purpurata, Reichb. f. 



2. P. viridiflava, Reichh. f. in Floi^a, 1882, 532. Allied to P. 



