206 COMMON CANADIAN WILD PLANTS. 



''' * Acorns ripening the second year, and therefore borne on the previous 

 year's wood, below the leaves of the season. Lobes or teeth of the 

 leaves bristle-pointed. 



5. Q. eoeein'ea, Wang. (SCARLET OAK.) A large tree. 

 Leaves bright green, shining above, turning red in autumn, 

 rounded at the base, deeply pinnatifid. the lobes divergent 

 and sparingly cut-toothed. Bark gray outside, reddish 

 inside. Cup top-shaped or hemispherical, with a more or 

 less conical base, covering half or more of the rather small 

 acorn. 



Var. tineto'ria, Gray. (Q. tinctoria, Bartram, in Macoun's 

 Catalogue.) (QUERCITRON. YELLOW-BARKED or BLACK OAK.) 

 Leaves usually lees deeply pinnatifid, slender- petioled, rather 

 rounded at the base, rusty-downy when young, smooth and 

 shining above when mature, often slightly pubescent be- 

 neath, turning brownish, orange, or dull red in autumn, 

 Cup as in the species, but the bark darker and rougher and 

 yellow or orange inside. Western Ontario; mostly in dry 

 soil, but occasionally in moist places. 



Yar. ambig'ua, Gray. Leaves closely resembling those 

 of Q. rubra, but the fruit is that of Q. coccinea. Belleisle 

 Bay, King's Co., N.B. 



6. Q. rubra, L. (RED OAK.) A large tree. Leaves 

 moderately pinnatifid, turning dark-red in the autumn. 

 Cup saucer-shaped, sessile or nearly so, very much shorter 

 than the oblong-ovoid acorn. Rich and poor soil. 



7. Q. palustris, Du Eoi. (PiN OAK.) A medium-sized 

 tree. Cup flat-saucer-shaped, very much, shorter than the 

 ovoid-globose acorn, which is about half an inch long. 

 Leaves deeply pinnatifid, with divergent lobes and rounded 

 sinuses. Niagara district and south-westward. 



2. < AST AM: A, Tourn. CHESTNUT. 



C. vesea, L. , var. America' na, Michx. (C. vulgaris, var. 

 Americana, A. DC., in Macoun's Catalogue.) (CHESTNUT.) 

 A large tree. Leaves oblong-lanceolate, pointed, coarsely 

 and sharply serrate, acute at the base. Nuts 2 or 3 in each 

 bur. South-western Ontario. 



