200 COMMON CANADIAN WILD PLANTS. 



2. U. America' na, L. (Amekican or "White Elm.) Leaves 

 not rough above, abruptly -pointed. Flowers in drooping 

 pedicels. Buda glabrous. A large ornamental tree, with 

 drooping branohlets. — Moist woods. 



3. U. raeemo'sa, Thomas. (Corky Whitb Elm.) Re- 

 sembling the last, but the hud-scales are dovmy-ciliate, the 

 branches corky, and the flowers raceined. — Chiefly along road- 

 sides and borders of fields. 



2. CEl'TIS, L. Nettle-tree. Hackbeekt. 

 C. oeeidenta'lis, L. (Sttgabbbriiy.) A small tree of 

 Elm-like aspect. Leaves reticulated, ovate, taper-pointed, 

 serrate, more or less oblique at the base. Fruit as large as 

 a pea, dark-purple when ripe, the flesh thin. — Low grounds ; 

 a few trees here and there through Ontario. 

 3. MORirS, Tourn. Mulbebkt. 



1. M. ru'bra, L. (Eed Mtilbbebt.) Leaves heart-ovate, 

 rough above, downy beneath, pointed. Fruit red, turning 

 dark-purple, long. — Niagara district, and south-westward. 



2. M. alba, L. (White M.) Leaves smooth and shining. 

 Fruit whitish. — S. W. Ontario. 



4. URTI'CA, Tourn. Nettle. 



1. U. gra'eills. Ait. Stem slender, 2-6 feet high. Leaves 

 ovate-lanceolate, pointed, serrate, 3-5-nerved from the base, 

 nearly smooth, the long petioles with a few bristles. Flower- 

 clusters in slender spikes. — Moist ground and along fences. 



2. U. dioi'ea, L. (Stinging Nettle.) Plant bristly with 

 very stinging hairs. Leaves ovate, cordate, very deeply 

 serrate. Spikes branching. — Waste places. 



3. U. U'rens, L. Leaves elliptical or ovate, coarsely and 

 deeply serrate with spreading teeth, petioled. Flower- 

 clusters 2 in each axil, composed of both staminate and pis- 

 tillate flowers. — Waste grounds, Atl. Prov. 



5. lAPORX'EA, Gaudlchaud. Wood-Nettle. 

 L. Canadensis, Gaudlchaud. Stem 2-3 feet high. Leaves 

 large, ovate, long-petioled, a single 2-cleft stipvie in the ffxil 

 — Moist woods. 



