PLex.cal. 63. LEGUMlNOSiE. 366.Trifolium. 599 



3. TrifoUum suffocatum. Buried trefoil. 

 Head roundish, sessile, lateral and terminal ; calyx-teeth 



lanceolate, acute, recurved, longer than the corolla; legU' 

 men 2-seeded. 



Trifoliam mininiura siipinuni, Bali Hist. PL 1,992. 

 Trifoliuoi sufFocatum, Lin. Mant. 2, 276, 



Sandy sea-shores ; annual ; June and July. 



Stem short, tortuous* petioles long; leaflets blunt; sti^' 

 pules membranaceous, broad, divaricating ; flowers sessile, 

 glomerated ; corolla v^^hite. — Leaves alone appear above the 

 sand. 



c. Calyx villous or hirsute, not inflated after flowering ; co- 

 rolla-tube very long ; sta?idard deciduous ; flowers white 

 or reddish ; fruit covered luith a hardened central invo- 

 lucrum. 



4. TrifoUum suhterraneum. Underground trefoil. 

 Head villous, 4? or 5-flowered ; coma or involucrum cen-^ 



tral, reflected, stiff, stellate, covering the fruit. 



^Trifolium putnilum supinum, flosculis longis albis, Rati Syn. 327,2. 

 Trifolitim subterraneiira, Lin. S. P. lOSO. 



Sandy and gravelly places ; annual ; May. 



Stem prostrate, depressed, spreading ; leaves hairy ; sti- 

 pules ovate, lanceolate; peduncles in fruit deflected into the 

 ground ; calyx tubular ; teeth hairlike, nearly equal ; corolla 

 slender, white; legumen 1 -seeded. 



d. Trifolium. Calyx villous or hirsute, not inflated after 

 flowering', corolla l-petaled ; flowers spiked, perennial. 



5. Tr folium pratense. Meadow trefoil. 

 Spike close, ovate ; four of the calyx-teeth equal ; corolla 



unequal; stipules ovate, awned; leaflets ovate, scarcely cut; 

 stem ascending. 



TrifoUum pratense purpureum, Raii Syn. 328. 



Trifolium pratense, Lin. S. P. 1082. 



Marie grass. Purple clover. Honeysuckle trefoil. 



Fields and pastures; perennial; May to September. 



Stem rather branchy ; leaves nearly bald, ribs purplish 

 and anastomosing near the margin; spike solitary, sessile; 

 calyx 10-ribbed; standard longer than the wings. 



(3. sativum. Stems many, large, more upright; leaflets 

 oblong, oval, hairy ; peduncles mostly in pairs. 



Broad clover. 



y. album. Flowers cream-colour. 



