40 COMMON CANADIAN WILD PLANTS. 



2. T. Europse'a, L. The European Linden is planted as 

 a shade tree in some places. It is easily distinguished by 

 the absence of petal-like scales among the stamens, which are 

 present in the native Linden. 



ORDER XX. LINA'CE^E. (FLAX FAMILY.) 



Herbs with entire exstipulate leaves (but sometimes with 

 glands in place of stipules), and regular hypogynous flowers. 

 Sepals, petals, stamens, and styles, 5 each. Filaments 

 united at the base. Pod 10-celled, 10-seeded. Our only 

 genus is 



LINUM, L. FLAX. 



1. L. Virginia'num, L. (VIRGINIA F.) Flowers yellow, 

 small (J of an inch long), scattered. Stem erect, it and the 

 spreading branches terete. Leaves lanceolate and acute, 

 the lower obtuse and opposite. No glands, styles distinct. 

 Dry soil. 



2. L. Stria' turn, Walt., has the branches wing-angled, 

 broader leaves and more crowded flowers than No. 1. The 

 whole plant is stouter. Shores of the Great Lakes. 



3. L. SUlea'tum, Eiddell, has yellow flowers twice as large 

 as the preceding, wing-angled branches, and a pair of dark 

 glands in place of stipules. Sepals strongly 3-nerved, with 

 rough bristly margins. Styles united to the middle. Dry 

 soil, rare. 



4. L. rig'idum, Pursh. Glaucous. Flowers yellow, large. 

 Sepals lanceolate, glandular-serrulate. Branches rigid, 

 angled. Stipular glands usually present. Styles united. 

 N.W. 



5. L. peren'ne, L., var. Lewisii, Eat. and Wright. 



Flowers blue, on long peduncles. Perennial, glabrous and 

 glaucous, leaves linear, acute. .Styles distinct. Pod ovate. 

 -N.W. 



6. L. USitatiS'Simum, L. (COMMON F.) Annual. Floioers 

 blue, the sepals ciliate. Leaves alternate, linear-lanceolate, 

 acute, 3- veined. Cultivated grounds. 



