TRIFOLIUM, L. TREFOIL, CLOVER. i52l 



Tiiblo timber and in ornamental and fragrant woods. For gums 

 it beats the world, and supplies also many valuable coloring 

 materials. It is well supplied with ornamental species. 



PAPILIONACEyi:. PULSE FAMILY PHOPER. 



Leai'Ps mostly pinnate or jjulmate. Flowers usually in axillary 

 or terminal racemes, spikes or heads. Calyx of 5 sepals, united, 

 often unequally. Corolla jierigynous, very irregular, of 5 or 

 rarely fewer petals, i)apilionaceous ; upper petal called the vexil- 

 Imn, or banner, inclosing the others in the bud; 3 lateral called 

 alai or wings oblique outside and often adhering to the 3 lower, 

 which arc usually united, and called carina, or the keel. Sfa- 

 mens 10, very rarely 5, monadelphous or diadelphous, mostly 9 

 united and a free one next the banner. 



This sub-family, or sub-order iiududes all the Ciovers and 

 other leguminous forage plants which are considered in this 

 volume. 



TRIPOLI I'M, L. TREFOIL, CLOVER. 



Herbs, usually low. Lean's digitately, rarely pinnately 3-folio- 

 late; stipules adnate to the petiole. Flowers capitate or spiked, 

 rarely solitary; red, purple or whit-.^, rarely yellow; bracts small 

 or o, sometimes forming a toothed involucre. Calyx-teeth 5, sub- 

 equal. Petals persistent ; Avings longer tliun the keel, the claws 

 of both adnate to the staminal tube. UpjH'r stamen free ; all the 

 filaments, or 5 of them, dilated at the tip; anthers uniform. 

 iS7///e filiform, stigmas oblique or dorsal; ovules few. Pod small, 

 indehiscent, 1-4-seeded, nearly enclosed in the calyx. Found iu 

 the north temperate and warm regions, rare in southern; species 

 150. The above generic description is mainly adapted from 

 Hooker's Flora of the British Islands, 

 41 



