19£ GYNANDRIA, MONANDRIA, 



612. POGONIA. Juss. n. Brown, \rethcsa. L. 



Petals 5, distinct, without ,^lands. Lij) ses- 

 sile, cuculiate, inlernally crested. Pollen fari- 

 naceous. 



Roots fasciculated, the fibres simple and carnose: scapes 

 mostly bifoliate, 1-flowered; leaves rarely approximating 

 verticillately at the summit of the scape; external petals 

 often very long- and linear, the 2 internal then shorter 

 and connivent; lip abruptly alated from the base, the cen- 

 tre crested, terminating- in a simple dilated lobe with a 

 crenulated or eroded margin. (In P. ophioglossoides the 

 petals are all nearly of the same colour and magnitude.) 



Species. 1. P. ophioglossoides. 2. diraricata. 3. vcr- 

 ticillata. Obs. Root fasciculated, fibres simple and car- 

 nose. Scape about 12 inches hig-h, terete, brownish, and 

 as in P. diraricata slightly g-laucous. Leaves terminal, 

 verticillated in 5's, very smooth, with many nerves, cuue- 

 ate, oval-lanceolate, and somewhat acute, 2 of the leaves 

 distinctly interior. The S external petals linear, 2 to 

 2 and a half inches lon^ and channelled, colour green- 

 ish-brown; the 2 interior petals connivent and longer 

 than the lip, oblong-, obtuse, paler than the outer pe- 

 tals, and scarcely I third their length, internally marked 

 with 2 elevated lines. Lip horizontal, channelled, alated 

 from the base, and unconnected with the column, alated 

 margins inflected or cuculiate, terminating abruptly be- 

 low the dilated extremity of the lip; centre of the lip papil- 

 losely crested; extreme limb smooth and dilated, broader 

 than long, pendent, and undulated. Genitaliferous column 

 shorter than the lip, incurved, solid and subclavate. An- 

 ther 2-celled, horizontal, operculate, and persistent, un- 

 guicu lately articulated behind, received into a lacunose 

 margined depression at the summit of the column. Pol- 

 len pulverulent. P. medeoloidesy Ph. appears to be merely 

 a variety of this species. 



A North American genus. 



G13. *TRIPH0RA. f Arethusa. Swartz, mild. 

 Petals 5, distinct, equal and connivent. with- 

 out glands. Lip unguiculate, cuculiate. Column 

 s])athulate, complanate, and apterous. Pollen 

 farinaceous. 



Root a pendulous oblong tuber; stem many-flowered; 



f Derived bv ellipsis from the trivial name trianthophoros, of 

 Plukenet, Mant. 100. t. 348. f 6. 



