Gxxvui CLASSES, &c. AND GENERA ARRANGED. 



gular, longer than those of the centre, or disk. Recept. bristly. 

 Seed-down simple, or feathery ; rarely none. — Page 249. 



Class XX. GYNANDRIA. Stamens situated upon 

 the style, or column, or upon the germen. All of N. 

 O. Orchidese. J., except Aristolochia. 



Order I. MONANDRIA. Stamen, or stalkless Anther one. 



* Anther of two distinct, vertical cells, fixed to the top of the column. 



Orchis, Orchis. Nect. with a spur behind. — Page 251. 



Ophrys, Insect-orchis. Cal. somewhat spreading. Lip (Nect. 



Sm.) without a spur, convex. — Page 256. 

 Hermi'nium, Musk-orchis. Cal. somewhat spreading. Cor.-pet. 



with side lobes, like the nectary, which is flat without a spur. — 



Page 256. 



* * Anther parallel to the stigma, of two-cells, close together, perma- 



nent. 

 Neo'ttia, Lady's Tresses. Cal. converging, embracing the base 



of the fiat nectary, which is without a spur. Cor.pet. converg- 

 ing. Column wingless. — Page 257. 

 Liste'ra, Twayblade. Cal. spreading. Lip two-lobed. Nect. 



spurless, nearly flat. Cor.pet. spreading. Column wingless 



—Page 258. 



* * * Anther tenninal, fixed. 

 Epipactis, Hellehorine. Lip (Nectary) very hollow at the base, 



the exti-emit)^ undivided or three-lobed, the middle lobe largest, 



and as it were jointed. — Page 259. 



Order II. DIANDRIA. 2 Stamens, or stalkless Anthers. 

 Cypripe'dium. Ladys Slipper.— Vage 260. 



Order III. HEXANDRIA. 6 Stamens, or stalkless Anthers, 



Aristolo'chia, Birthwort. Cal. superior, tubular, often swollen at 

 the base, the mouth on one side dilated, one-lipped. Cor. 

 none. Stig. six-lobed. Caps, inferior, six-celled. N. O. Aris- 

 tolochieee. J. — Page 260. 



