CLASS XVII. ORDER III. | TRIFOLIUM. 981 
Root branched and fibrous. Stems several, prostrate, or ascending, 
round, smooth, branched, and spreading. Leaves numerous, dark 
green, paler beneath, often marked with a dark stain near the base, 
petioles of the lower leaves long, those of the upper short. Leaflets 
obovate, or oblong, acute, rarely notched, acutely toothed. Stipules 
narrow, short, linear lanceolate. Jnjflorescence hemispherical, at 
length globose heads of crowded flowers, elevated on a short peduncle, 
which becomes much elongated. Calya small, imperfectly two lipped, 
the upper one hairy, becoming after flowering much enlarged, dilated, 
pale, thin, membranous, ovate, with a long narrow tubular neck, 
netted with straight longitudinal ribs and numerous slender transverse 
ones, terminated by two bristle-shaped spreading teeth, downy. 
Corolla elongated, pale pink, the vexillum placed opposite the lower 
three toothed lip, and becoming recurved. Legume small, mostly 
two seeded. 
Habitat—Meadows near Bristol, and near Poole. 
Annual; flowering in July. 
This species of the strawberry headed Clover, it is probable, has 
been introduced from the Continent, where it is not uncommon. In 
Italy it is frequently cultivated and grown for hay crops, or it is cut 
green and consumed in that state. It appears to flourish extremely 
well on a light sandy soil, and produces a very heavy crop, and in 
many places where the soil is light and moist, it promises to be a 
very valuable plant from its great produce, and may with advantage 
in many instances be substituted for Z. procumbens or T. filiforme. 
4, TricHocerHatum. Fertile flowers very few in a head, nearly 
sessile, after flowering reflexed, calya mouth naked ; sterile flowers 
surrounding and embracing the fertile ones. 
16. T. suberra'neum, Linn. (Fig. 1188.) Subterraneous Trefoil. 
Heads of few flowers erect, deflexed after flowering, and surrounded 
by several abortive reflexed calyces, forming a sub-globose head; 
teeth bristle-shaped, spreading in a star-like manner, hairy; leaflets 
obcordate ; stipules broadly lanceolate, acute ; stem prostrate, hairy. 
English Botany, t. 1048.—English Flora, vol. iii. p 300.—Hooker, 
British Flora, ed. 4. vol. i p. 275.—Lindley, Synopsis, p. 80. 
Root fibrous. Stems several, round, branched, spreading close to 
the ground, leafy, and more or less hairy, like the rest of the plant. 
Leaves on long slender spreading footstalks, leaflets all nearly sessile, 
inversely heart-shaped, the mid-rib prominent, and numerous lateral 
fine veins, the margin obscurely toothed. Stipules large, ovate, 
membranous, veiny, hairy. Injlorescence axillary heads of from two 
to five flowers, on a slender peduncle, erect when in flower, elongated 
and deflexed in fruit. Flowers small, white. Calyx of the perfect 
fruit nearly tubular, pale green or white, five ribbed, terminating in 
five long slender bristle-like teeth, and hairy, becoming somewhat 
