50 COMMON CANADIAN WILD PLANTS. 



Synopsis of the Genera. 



* Flowers papilionaceous. Stamens monadelphous or diadelphous. 

 *- Not climbing or twining. Pod not jointed. 



1. l.upi inis. Leaves palmately '-compound , leaflets 7-9. Flowers in 



terminal racemes. Stamens monadelphous. 



2. 1'rii'o I hi in. Leaves of 3 leaflets. Flowers in heads. Stamens 



diadelphous. 



3. Medica'go. Leaves pinnate, of 3 leaflets. Flowers in axillary spikes 



or racemes. Pod curved or coiled. Stamens diadelphous. 



4. .Welilo'tus. Leaves pinnate, of 3 leaflets, the leaflets toothed. 



Flowers in slender axillary racemes. Pod wrinkled, 1-2-seeded. 

 Stamens diadelphous. 



5. llositck'ia. Leaves pinnate, 'of 1-3 leaflets, stipules gland-like, 



minute. Flowers yellow, often turning reddish, solitary on axil- 

 lary peduncles bearing each a leafy bract. Pod linear, several- 

 seeded, partitioned between the seeds. N. W. only. 

 C. Robin' ia. Trees. Leaves odd-pinnate, often with spines for stipules, 

 and the leaflets with small stipules. Flowers in hang-ing axillary 

 racemes. Pod margined on one edge. Stamens diadelphous. 



7. Astragalus. Leaves odd-pinnate, leaflets numerous. Flowers in 



dense axillary spikes. Corolla long and narrow, the keel not 

 tipped with a sharp point. Pod turgid, one or both sutures (see 

 Part I., section 217) projecting into the cell, thus partially or 

 wholly dividing the cavity. Stamens diadelphous. 



8. Oxyt'ropls. Low perennials with very short tufted stems from a 



hard rootstock, covered with scaly stipules. Flowers nearly as in 

 Astragalus, but the keel is tipped with a sharp appendage. 

 Peduncles scape-like. 



9. CUycyrrhi'za. Leaves odd -pinnate, glandular -viscid. Flowers 



whitish, in axillary spikes, like those of Astragalus. Root long, 

 perennial, sweet. Pods few-seeded, clothed with rough glands or 

 short hooked prickles. N. W. chiefly. 



10. Tephro'sia. Hoary perennials. Stem simple. Flowers yellowish- 



white marked with purple, in a terminal dense oblong raceme. 

 Wings coherent with the keel. Pod linear, flat, several-seeded. 



11. Psora'lea. Leaves palmate, of 3-5 leaflets. Stamens diadelphous 



(sometimes monadelphous). Flowers spiked or racemed, mostly 

 bluish, sometimes white. Pod as long as the calyx, 1-seeded. 

 Calyx, pods, &c., usually glandular-dotted. N.W. only. 



12. Amor'pha. Leaves odd-pinnate, of many leaflets, glandular-dotted. 



Corolla of one petal only, the standard, enfolding the stamens and 

 style. Flowers violet or purple, in dense terminal spikes. 

 Stamens 10, monadelphous at the base only, distinct above. 

 N. W. only. 



