52 COMMON CANADIAN WILD PLANTS. 



* * * flowers not papilionaceous ; polygamous. Trees. 



24. Gledlt'schia. Thorny trees, with abruptly once- or twice-pinnate 



leaves. Flowers greenish, inconspicuous, in small spikes. 

 Stamens separate, 3-10. 



25. Gymnoc'ladag. Not thorny. Large trees with doubly pinnate 



leaves, the leaflets vertical. Pod very long and broad. Stamens 

 10. Petals on the summit of the long calyx-tube, whitish. 



1. U I'l M s. Tourn. LUPINE. 



1. L. peren'nis, L. (WiLD LUPINE.) Stem erect, some- 

 what hairy. Leaflets 7-9, oblanceolate. Calyx deeply 

 2-lipped. Pods hairy. Sandy soil. 



2. L. argen'teus, Pursh., var. argophyTlus, Watson, 



occurs in the far west. The petals are blue or cream- 

 coloured, and the calyx is decidedly spurred at the base. 

 Plant hoary-pubescent. 



3. L. King'ii, Watson (L. pusillus, Pursh.), is also a 

 N.W. species. Seeds only 2 or 3. Plant low, villous with 

 white soft hairs. Racemes short, few-flowered, on long 

 slender peduncles. 



2. TRIFO Lll M, L. CLOVER. TREFOIL. 



1. T. arvense, L. (RABBIT-FOOT or STONE CLOVER.) Stem 

 erect, 4-12 inches high, branching. Heads of whitish 

 flowers oblong, very silky and soft. Calyx-teeth fringed 

 with long silky hairs. Dry fields. 



2. T. pratense, L. (RED C.) Stems and leaves some- 

 what hairy, the latter marked with a pale spot on the upper 

 side. Flowers purplish, in dense sessile heads. Pastures. 



3. T. medium, L. (ZIGZAG C.) Like the last, but 

 smoother, and the leaves without the pale spot. Heads 

 mostly stalked. Atl. Prov. 



4. T. repens, L. (WHITE C.) Smooth, creeping. Heads 

 of white flowers rather loose. Fields everywhere. 



5. T. hy'bridum, L. (ALSIKE C.) Resembles the last, but 

 the flowers are rose-tinted, and the stems erect or ascending. 



6. T. reflexum, L. (BUFFALO C.) Only in south-western 

 Ontario, in the neighbourhood of the Detroit river. Heads 



