XXX11 SYNOPSIS OF GENERA. 



3 on each filament. Pert. fl. Catkin hairy. Seed 1, on a hairy stalk. Ty- 

 phacea, p. 262. 



SPARGANIUM. Barr. fl. Cal. 3-leaved. Cor. none. Pert. fl. CaL 3- 

 leaved. Cor. none. Drupe dry. Typhacece, p. 263. 



CAREX. Barr.fl. Catkin imbricated. CaL a scale. Cor. none. Pert, 

 fl. Catkin imbric. Cal. a scale. Cor. a hollow permanent glume, investing 

 the loose seed. Cyperacece, p. 325. 



Order IV. TETRANDRIA. Stamens 4. 



LITTORELLA. Barr. fl. Cal. 4-leaved. Cor. 4.cleft. Stam. capillary, 

 very long. Pert. fl. Cal. none. Cor. unequally 3- or 4-cleft. Style very 

 long. Nut of 1 cell. PlantagirtecE, p. 176. 



URTICA. Barr. fl. Cal. 4-leaved. Pet. none. Nect. central, cup-shaped. 

 Stam. the length of the calyx. Pert. fl. CaL 2-leaved. Cor. none. Seed I, 

 superior polished. Urticcce^ p. 232. 



ALNUS. Barr.fl. CaL scale of a catkin, permanent, 3-flowered. Cor. 

 deeply 4-cleft. Fert. fl. CaL scale of a catkin, permanent, 2-flowered. 

 Cor. none. Styles 2. Nut compressed, without wings. Amentacea, 

 p. 242. 



(See Eriocaulon in Ord. VI. Myrica in Cl. xxii.) 



Order V. PENTANDRIA. Stamens 5. 



XANTHIUM. Barr. fl. Common CaL imbricated, many-flowered, with 

 intermediate scales. Cor. of 1 petal, funnel-shaped, 5-cleft. Fertile fl. 

 CaL of 2 leaves, with 2 flowers. Cor. none. Drupe spurious, coated with 

 the prickly calyx, cloven. Nut of 2 cells. Compositcc, p. 153. 



(See Fagus and Quercus in Ord. Polyandria. Atriplex in Cl. Polygamia.) 



Order VI. HEXANDRIA. Stamens 6. 



ERIOCAULON. Common Calyx imbricated, many-flowered. Barr. fl. 

 in the middle. CaL in 6 or 4 deep segments. Stam. 6, 4, or 3. Fert. fl. 

 in the circumference. Pet. 6 or 4. Style 1. Caps, superior, 2- or 3-lobed. 

 Seeds solitary. JRestiacea, p. 289. 



(See Quercus in Ord. Polyandria.) 



Order VII. POLYANDRIA. Many Stamens. 



MYRIOPHYLLUM. Barr.fl. Cal. 4-leaved. Pet. 4. Stam. 8. Fertile 

 fl. Cal. 4-leaved. Pet. 4. Stigmas 4, sessile. Drupes 4. Haloragece, 

 p. 112. 



POTERIUM. Barr. fl. Cal. 3-leaved. Cor. deeply 4-cleft. Stam. 

 3050. Fert. fl. CaL 3-leaved. Cor. deeply 4-cleft. Pistil 1 or 2. Nut 

 coated, of 1 or 2 cells. Rosacete, p. 106. 



SAGITTARIA. Barren fl. CaL 3-leaved. Pet. 3. Stam. about 24. 

 Fert. fl. CaL 3-leaved. Pet. 3. Pist. numerous. Seeds numerous, bor- 

 dered. Alismacece, p. 271. 



CERATOPHYLLUM. Barr. fl. CaL many-cleft. Cor. none. Stam. 

 16 20. Fert. fl. CaL many-cleft. Cor. none. Stigma nearly sessile, ob- 

 lique. Drupe compressed. Ceratophyllece, p. 239. 



FAGUS. Barr. fl. in a catkin. CaL in several segments. Cor. none. 

 Stam. 5 20. Fert.fl. CaL double; outer inferior, prickly, in several deep 

 segments, 2- or 3-flowered ; inner superior, 5- or 6-cleft, Cor. none. Styles 



