200 COMMON CANADIAN WILD PLANTS. 



2. U. America' na, L. (AMERICAN or WHITE ELM.) Leaves 

 not rough above, abruptly pointed. Flowers in drooping 

 pedicels. Buds glabrous. A large ornamental tree, with 

 drooping brarichlets. Moist woods. 



3. Uv raeemo'sa, Thomas. (CORKY WHITE ELM.) Ee- 

 sembling the last, but the bud-scales are downy-ciliate, the 

 branches corky ', and the flowers racemed. Chiefly along road- 

 sides and borders of fields. 



2. CEL'TIS, L. NETTLE-TREE. HACKBERRY. 

 C. oeeidenta'lis, L. (SUGARBERRY.) 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. MORUS, Tourn. MULBERRY. 



1. M. ru'bra, L. (EED MULBERRY.) 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'eilis, 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. LAPORT'EA, Gaudichaud. WOOD-NETTLE. 

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

 large, ovate, long-petioled. a single 2-cleft stipule in the axil 

 Moist woods. 



