44 COMMON CANADIAN WILD PLANTS. 



stamens, each 5. Fruit a 1-seeded drupelet. The petals 

 and stamens inserted under the edge of a disk which sur- 

 rounds the base of the ovary. The only genus is 



KHrS, L. SnMACH. 



1. R. typh'lna, L. (Staghorn Sumach.) A small tree, 

 10-30 feet high, with densely soft-hairy branches and sialics. 

 Flowers greenish-white, polygamous, forming a terminal 

 thyrse. Fruit globular, covered with crimson hairs. Leaves 

 pinnate, leaflets 11-31, oblong, lanceolate, serrate, pointed. 

 — Dry hill-sides. 



2. R. glabra, L., (Smooth S.) is smooth, and seldom ex- 

 ceeds 5 feet in height. 



3. R. Toxieoden'dron, L. (Poison Ivy. Poison Oak.) 

 Shrub about a foot high, smooth, often climbing by rootlets. 

 Leaves 3-foliolate, leaflets rhombic-ovate, notched irregu- 

 larly. Flowers polygamous, in slender axillary panicles. 

 Plant poisonous to the touch. Var. radl'cans, L., has the 

 leaves entire, and climbs high. 



4. R, venena'ta, DC. (Poison Elder.) A tall shrub, 

 smooth or nearly so. Leaves odd-pinnate ; leaflets 7-13, 

 obovate-oblong, entire. G-reenish-white flowers as in No. 3. 

 — Swamps. 



5. R. Canadensis, Marsh. (Fragrant S.) {R. aromat- 

 ica, Ait.) A shrub 2-3 feet high, or more, with 3-foliolate 

 leaves, sweet-scented when crushed, and catkin-like spikes 

 of pale yellow flowers appearing before the leaves. — Dry 

 rooky banks. Var. triloba'ta, with small leaflets and an 

 unpleasant odour, is rather common in the North-West. 



Order XXVI. VITA'CE.ffi. (Vine Family.) 



Shrubs climbing by tendrils, with small greenish flowers 

 in panic led clusters opposite the leaves. Stamens as many 

 as the petals and opposite them. Calyx minute. Petals 4 

 or 5, hypogynous or perigynous, very deciduous. Fruit a 

 berry, l-4-seed6d. Leaves palmately-veined, or compound. 



