48 COMMON CANADIAN WILD PLANTS. 



sinuate -toothed, the petioles without stipules. Flowers green- 

 ish-yellow, drooping on slender hairy pedicels, appearing at 

 the same time as the leaves. Calyx fringed on the margin. 

 Var. barbatum, Michx., has rather glossy leaves, mostly 

 broader than long, 3-lobed, with very open rounded sinuses, 

 and no stipules. Var. nigrum, Toir. and Gray, may be 

 distinguished from the ordinary form by its paler and more 

 pubescent leaves, the petioles with adnate foliaceous stipules. 

 Rich woods. 



4. A. dasyear'pum, Ehrhart. (A. saccharinum L.) 

 (WHITE OR SILVER M.) Leaves deeply 5-lobed. the sinuses 

 rather acute, silvery-white underneath, the divisions nar- 

 row, sharply-toothed. Flowers in erect clusters, greenish- 

 yellow, appearing much before the leaves ; petals none. 

 Samara very large, ivoolly when young. River-banks and 

 low grounds. 



5. A. ru'brum, L. (RED M.) Leaves 3-5-lobed, the sin uses 

 acute. Flowers red, appearing much before the leaves. 

 Petals linear-oblong. Samara small and smooth, on drooping 

 pedicels. A smaller tree than No. 4, with reddish twigs, 

 and turning bright crimson in the autumn. Swamps. 



2. MXil VI>O, Moench. ASH-LEAVED MAPLE. BOX-ELDER. 

 N. aeeroi'des, Moench. Calyx minute, 4-5-cleft. Petals 

 none. Staminate flowers in rather dense clusters on slender 

 pedicels, the pistillate ones in drooping racemes. Wings of 

 the samaras incurved. N. W., common. Also, Don valley 

 near Toronto, and planted as a shade-tree. 



ORDER XXX. POLYGALA'CE^. (MILK WORT FAMILY.) 



Herbs with entire exstipulate leaves, and irregular hypo- 

 gynous flowers. Stamens 6 or 8, monadelphous or diadelph- 

 ous, the anthers 1-celled, and opening at the top by a pore. 

 Pod 2-celled and 2-seeded, flattened contrary to the partition. 

 The only genus with us is 



POLYG'ALA, Tourn. MILK-WORT. 

 Sepals 5, the upper one and the two lower ones small and 



