GTNANDRIA. MONANDftlA. 195 



617. CALYPSO. Salisbtmj, R. Brown, 

 Petals adscendent, secund. Lip ventrirose, 



calcarate beneath towards the point. Column 

 petaloidly dilated. Follinia 4. 



Bulb roundish; leaf solitary, radicul; scape 1-flowered, 

 leafless, sheathed towards the base and summit. 



Species. l.C. umericana. Lip narrowed and subun- 

 guiculate at the base; spur semibifid exceeding the lami- 

 na, with the dentures acute; peduncle longer than the 

 gtirra. R.Brown, Uort. Kew. 5. p. 208. Flower purple, 

 somewhat resembling a species or" Cypnpedium. v. v. sins 

 Jl. on the island of St. Helena, near Uie outlet of Lake 

 Alicl)igan, in the shade of Abies canaiiensis attached to 

 recent vegetable sod. (^1811). 



A second species of this singular genus is the Cypripe- 

 ditcm bulbjsum, of Linnaeus, indigenous to Sweden. 



618. ^TIPULARIA.f 



Petals spathulate, spreading. Lip entire, ses- 

 sile, conspicuously calcarat© below at the base. 

 Co/ifmn apterous, porrected, fVee. ►SHt/ic?* oper- 

 culate, persistent j pollinia 4, pai'ailel. 



Bulbs concatenated, horizontal. Leaf solitary, plaited 

 and longitudinally nerved; Ho wers racemose, nuiani, des- 

 titute of bractes. 



T. discolor. Orchis discolor. Ph. 2. p. 585. Limodorum 

 unifoUumi Herb. Muhl. and Catal. p. 81. 



Obs. Petals 5, greer.ish, spreading; the 3 exterior, ob- 

 long-obovate, the 2 interior narrower Lp entire, very 

 short and concave, crenulate, suuaied before, calcarate 

 at the base; spur entire, nearly twice the length of the 

 germ, straight and filiform, partly car.nated beneath. 

 Genitaliferous column porrecied, margined at the sides. 

 A.nheroperculate, persistent; operculum articulated be- 

 hind, furnished with 2 auxiliiary valves, closing internally 

 upon the 4 masses of pollen, masses solid and parallel, 

 neither granular nor pulverulent. 



A plant somewliat allied to Corallorhiza^ and to Orchis 

 abortiva. 



t So called from a fancied resemblance in the fiower to in' 

 sects of the genus Tipula. 



