LINN.EAN SYNOPSIS OF GENERA. XXXI 



295. URTICA. Perianth 4-leaved. Perigone 2-leaved. Stam. 



equalling the perianth. 



308. ALNUS. Fl. in imbricated catkins. Scales of male fl. 3- 

 lobed, 3-flowered. Perianth 4-fid. Perigone 0. 



Order V. PENT- POLY- ANDBIA. 



* FL not in catkins, with cal. and corolla. 



120. MYRIOPHYLLUM. Pet. of male fl. 4, deciduous. Stam. 8. 



Germ, inferior. 



345. SAGITTARIA. Pet. 3. Stam. about 24. Carp, many, upon 

 a globose receptacle. 



121. BRYONIA. Cal. with 5 teeth. Cor. 5-cleft. Filaments 3. 



Anth. 5. Fr. an inferior berry. 



** FL not in catkins, imperfect. 



208. XANTHIUM. Involucre of male many-leaved, with a 5- 



toothed perianth ; of female 1 -leaved, inclosing 2 flowers. 

 293. CERATOPHYLLUM. Perianth many-leaved. Stam. 16 20. 



Nut ending in a spine. 

 337. ERIOCAULON. Perianth 4 6-cleft. Stam. 4 6. Caps. 



2 3-lobed, 2 3-celled. 

 274. AMARANTHUS. Perianth 3 4-leaved. Stam. 3 or 5. Caps. 



opening all round. 

 91. POTERIUM. Perianth 4-cleft. Fr. 2 nuts, invested with 



the hardened quadrangular tube of the perigone. 



*** Fl. in catkins. 



296. Nat. Order 77- AMENTIFER^E (in part). 



Order VI. MONADELPHIA. 



[Filaments of stam. united below into one set.] 

 310. PINUS. Male fl. in racemose catkins. Fr. in cones. 



Class XXII. DICECIA. 



297. SALIX. Perianth 0. Stam. and pistils with 1 or 2 glands 



at the base. Anth. 1 5, usually 2. 

 289. EMPETRUM. Cal. 3-parted. Pet. 3. Stam. 3. 

 329. Ruscus. Sep. 6. Pet. 0. Stam. 3. 

 287. HIFPOPHAE. Male fl. with a perianth of 2 deep roundish 



lobes. Stam. 4. Fern. fl. with a tubular bifid perianth. 



Stigma elongate. 



