CLASS XVII. ORDER III. | TRIFOLIUM. 979 
smooth, somewhat glaucous, veiny on the under side, toothed, the 
lateral ones sessile, the middle one elevated on a slender footstalk. 
Stipules half ovate, acute, entire, ribbed, and mostly hairy. Inflo- 
rescence dense crowded heads, becoming oblong, of about forty yellow 
flowers, arising from the axis of the leaves, and elevated on a 
peduncle, which is as long, and often much longer than the leaves 
Flowers varying from a pale sulphur colour to an orange yellow, the 
calyx smooth, the two upper teeth smallest, the mouth naked. 
Corolla persistent, deflexed after flowering, and the vexillum becomes 
deeply striated, tawny, and membranous. Zegume small, pointed, 
single seeded. 
Habitat.—Dry pastures, borders of fields, and waste places ; 
frequent. 
Annual ; flowering from June to July. 
13. TZ. fili'forme, Linn. (Fig. 1134.) Lesser Yellow Trefoil. Heads 
lateral, pedunculated, lax, about ten flowered, at length deflexed ; 
calyx smooth, its mouth naked; leaves stalked; leaflets obovate, or 
obcordate, the lateral ones sessile, the middle one stalked ; stipules 
half ovate. 
6. major. Heads many flowered; peduncles much longer than 
the leaves.—TZ. jiliforme, Sturm.—T. procumbens, Poll.—Z. minus, 
Relh.—English Botany, t. 1256.—Lindley, Synopsis, p. 81. 
y- microphyllum, (Fig. 1135.) Smaller, leaves small, heads of few 
and distant flowers, peduncles frequently not exceeding the leaves. 
T. controversum, Jan.—T. lupulinum minimum, Dill. in Raii Synop. 
—T. filiforme, Linn.—English Botany, t. 1257—Hooker, British 
Flora, ed. 4. vol. i. p. 277.--Lindley, Synopsis, p. 81. 
Root tapering, and fibrous. Stems mostly numerous, round, 
smooth or downy at the extremity, slender, prostrate, from four to 
twelve inches long, leafy, and more or less branched. Leaves petio- 
lated, leaflets obovate, or obcordate, finely toothed, a somewhat 
glaucous ‘green, paler beneath, finely ribbed, the lateral ones nearly 
sessile, the centre one elevated on a slender footstalk. Stipules ovate, 
acute, mostly fringed. Inflorescence small axillary heads of from 
three to ten flowers, elevated on a slender pedicle, downy, and longer 
than the leaves. Calya smooth, its mouth naked, the teeth unequal, 
the two upper ones shortest, mostly fringed with fine hairs. Corolla 
small, pale or orange yellow, becoming dark brown and membra- 
nous, slightly furrowed. Legumes obovate, single, rarely two seeded. 
Habitat.—Dry pastures and road sides ; frequent. 
Annual; flowering in June and July. 
This, like the last species of Trefoil, is a favourite food of sheep and 
cattle ; and as it flourishes best on dry sandy or gravelly soil, it is 
found one of the best and most useful artificial grasses, especially for 
those crops intended for making into hay, or for mowing green for 
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