CLASS XVII. ORDER III. | TRIFGLIUM.- 971 
about afoot high, scarcely branched. Leaves alternate, distant, the 
lower ones on long slender footstalks, the upper ones on shorter, 
leaflets on short partial footstalks, ovate, or elliptic, entire, or slightly 
toothed, often notched at the apex, and the mid-rib terminating in a 
point, paler beneath, with a prominent midrib, and numerous fine 
parallel lateral veins, nearly smooth, or downy, the upper side mostly 
marked with a pale crescent-like spot. Stipules pale, membranous, 
oyate, acute, bristle pointed, reticulated with coloured veins. Jn/flo- 
rescence terminal, solitary, round, or ovate heads, sometimes in pairs, 
nearly sessile in the axis of the involucre. Calyx cylindrical, ten 
ribbed, somewhat pubescent, the mouth surrounded with a ring of 
pale hairs, and five bristle-shaped teeth, the lower one longest, erect 
in fruit. Corolla dark purple, pink, and sometimes white. Petals all 
united into a tube. Legume inclosed in the calyx small, roundish, 
single seeded. 
_ Habitat.—Meadows and pastures ; frequent. 
Perennial; flowering during the summer months. 
This species of Clover is the most valued of all the artificial grasses 
for agricultural purposes, whether for cutting, while green, or for 
making into hay, its produce being greater, and is more relished by 
cattle than any of the other species; and from experiments made upon 
it by Mr. Sinclair and others, it appears to contain a greater propor- 
tion of nutritious matter. It, like all the otherspecies, flourishes best in 
a dry light soil, in which the long ramifications of its roots can pene- 
trate; in such situations in a dry season it produces the greatest 
quantity of seed, and if the season is a wet one, the bulk of produce 
is greater ; but whether under such circumstances it contains in pro- 
portion a greater quantity of nutriment, is a questionable matter. It 
is often sown with rye grass when it is intended to be cut for hay ; 
and in many cases this mixture of grass and clover seems to answer 
to the grower better than when grown alone, especially if the soil is 
not very porous. 
2. T. me'dium, Linn. (Fig. 1123.) Zigzag Trefoil. Heads globose, 
solitary, pedunculated ; calyx ten ribbed, smooth, erect in fruit, with 
the teeth bristle-shaped, ciliated, the lower one longest; leaflets 
elliptic, finely toothed; stipules lanceolate, taper pointed ; stem 
ascending, zigzag, branched. 
English Botany, t. 190.—English Flora, vol. iii p. 302.—Hooker, 
British Flora, ed. 4. vol. i. p. 275.—Lindley, Synopsis, p. 80. 
foot somewhat creeping. Stem ascending, mostly much branched, 
and bent at each joint, round, smooth, or clothed with soft pubescence. 
Leaves petiolated, the leaflets sessile, elliptic, acute, or obtuse, some- 
times notched at the apex, the margin fine toothed, dark green above, 
somewhat glaucous, and generally hairy beneath, the mid-rib pro- 
minent, the lateral veins minute, numerous. Stipules lanceolate, 
with a long linear point, ribbed, with coloured veins, and downy. 
Orr: 
