Orchis. GYNANDRIA MONANDRIA. 451 



two interior, small, obliquely oblong, erect, forming- a dome 

 over the anthers. Nectary, upper lip short ; the under one 

 three-parted, middle division long, narrow-pointed, recurv- 

 ed. Horn nearly twice the length of the germ. 



3. O. commelin(pfoiia. R. 



Lip throe-parted. Ser/ments filiform ; horn filiform, twice 

 the length of the long taper-pointed germ ; tubers from two 

 to four, fusiform, thin, leafy ; leaves lanceolate, sheathing. 



An erect plant, about eighteen mches high ; a native of 

 the northern parts of Bengal, from thence introduced into the 

 Botanic garden, where it blossoms in August, which is the 

 middle of the rainy season. 



Root consisting of two, three, or four fusiform, succulent, 

 pale tubers, and fleshy fibres. Stem erect, simple, including 

 the floriferous part, about a foot and a half round, smooth, 

 jointed, as thick as a slender quill. Leaves alternate, lanceo- 

 late,shining, the largest about six inches long, by one broad, 

 decreasing gradually into bractes in the spike, where they 

 end, long, slender, and sharp. Sheaths cylindric, about half 

 the length of the joints of the stem. Flowers many, scatter- 

 ed round the last five or six inches of the plant, pretty large, 

 white, and inodorous. Coral (calyx, Swarfz.) exterior and 

 inferior lateral two petals semi-cordate, reflexed, ribbed ; the 

 upper one vaulted ; the interior two unequally oblong. Lip, 

 at the base a shorl, linear, undivided part, the rest consistino- 

 of three, nearly equal, long, filiform segments, the middle one 

 projecting downwards and backwards, the lateral two di- 

 verging. Horn generally more than twice the length of the 

 germ, filiform, with a clavate apex, green and variously curv- 

 ed. Column of the fructification short, protruding two lono- 

 acute horns forward, into their fine extreme points. The 

 proper filaments are inserted, and until expansion remain 

 hid in a very fine groove along their upper edge. Anthers 

 ovate, before expansion lodged between the thin folds of the 



» E2 



