GYNANDRIA. MONANDRIA. 195 



617. CALYPSO. Salisbury. R. Brown. 

 Petals adscendent, secuud. Lip ventricose, 



calcarate bcneatit towards the point. Column 

 petaloidly dilated. Pollinia 4. 



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

 leafless, sheathed towards the base and summit. 



Species. l.C. ameiicana. Lip narrowed and siibun- 

 guiculate at the base; spur semiblfid exceeding the lami- 

 na, with the dentures acute; peduncle longer than the 

 germ. R. Brown, Hon. Kew. 5.p. 2G8. Flower purple, 

 somewhat resembling a species of Cypripedinm. v. v. sine 

 Ji. on the island of St. Helena, near the outlet of Lake 

 Michigan, in tlie shade of Abies canadensis attached to 

 recent vegetable soil. (1811). 



A second species of this singular genus is the Cvpripe- 

 dium bidbosum, of Linnxus, indigenous to Sweden. 



618. *TlPULARIA.t 



Petals spathulate, spreading. Lip entire, scs- 

 sile, conspicuously calcarate below at the base. 

 Co^wmn apterous, porrected, free. Jlnther oi^QV- 

 culate, persistent j pollinia 4, parallel. 



Bulbs concatenated, horizontal. Leaf solitary, plaited 

 and longitudinally nerved; flowers racemose, nutaat, des- 

 titute of bractes. 



T. discolor. Orchis discolor. Va. 2, p. 5Q6. Limodorum 

 wiifolium. Herb. Muhl. and Catal.p. 81. 



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

 long-obovate, the 2 interior narrower L'p entire, very 

 sho'rt and concave, crenulate, situated bc^fore, calcarate 

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

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

 Genitaliferous column porrected, margined at the sides. 

 Aiuheroperculute, persistent; operculum articulated be- 

 hind, furnished witli 2 auxllliary valves, closing internally 

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

 neither granular nor pulverulent. 



Ji plant somewhat allied to Coralloriiiza, and to Orchis 

 abortiva. 



t So called from a fancied resemblance in the flower to in- 

 sects of the genus Tipula. 



