DEEP, COOL, MOIST WOODS 381 



longer than the upper, convex. Stamens,^. i^/-«?V, of 4winged 

 nutlets, each raised oh a slender base. 



A plant less than 2 feet high, with simple or branched stem. 

 New York to Virginia and westward. 



60. Richweed. Stone-root. Horse-balm 



Collinsonia Canadensis.— Family, Mint. Color, lemon-yel- 

 low. Leaves, opposite, ovate, much pointed and deeply toothed, 

 with long petioles. Time, July to Se^jtember. 



Calyx, 2-lipped, the upper lip 3-toothed, the lower 2-cleft. 

 Corolla, I inch long, tubular, with 4 upper, almost equal lobes, 

 and I lower, quite long and large, hanging down, cut and 

 fringed. Stamens, 2 (sometimes 4), standing well out from 

 the flower. 



A smooth plant, 1 103 feet high, widely branching, with flowers 

 in loose, large panicles, pleasantly lemon-scented. Found in all 

 the Atlantic States. 



61. Virginia Smartweed 



Polygonunn Virginianum. — T^awz/y, Buckwheat. Cb/i?/', green- 

 ish. Leaves, rather long, 3 to 6 inches, ovate or ovate-lance- 

 shaped, rounded at base, short-stalked, rough, hairy. Time, 

 summer. 



Corolla, none. Calyx, 4-parted; the divisions unequal. 

 Stamens, 5. Styles, 2. Flowers, in long, loose spikes, with 

 bracts. The sheaths at base of leaves are hairy, fringed. 



A smooth, upright stem, 2 to 4 feet high. One of our common 

 species. 



62. Virginia Snakeroot 



Aristoldchia serpentaria. — Family, Birthwort. Color, green- 

 ish. Leaves, alternate, ovate, or long and narrow, heart-shaped 

 at base, acute at apex. Time, July. 



Calyx, tubular, bent like the letter S, smaller in the mid- 

 dle, with 3 lobes. No petals. Stamens, 6, with sessile an- 



