LINNiEAN SYNOPSIS OF GENERA. XXXI 



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



equalling the perianth. 

 308. Alnus. F1. in imbricated catkins. Scales of male fl. 3- 



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



Order V. PENT- POLY- ANDRIA. 



* 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. 6-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. Cehatophyllum. Perianth many-leaved. Stam. 16 — 20. 



Nut ending in a spine. 

 337. Eriooaulon. Perianth 4 — 6-cleft. Stam. 4 — 6. Caps. 



2— 3-lobed, 2— 3-celled. 

 274. Amaranthus. Perianths — 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. AmentifeRjB (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. Empktrum. Cal. 3-parted. Pet. 3. Stam. 3. 

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

 287. HiPPOPHAE. Male fl. vrith a perianth of 2 deep roimdish 



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



Stigma elongate. 



