CLASS XVII. ORDER III. ] TRIFOLIUM. 973 
globose, but become oblong, and the corolla is persistent, drying a 
brownish colour. It is not unfrequent in the mountain woods and 
pastures of the Continent. 
4. T. marit'imum, Huds. (Fig. 1125.) Teasel-headed Trefoil. Heads 
terminal, sub-globose, sub-sessile; calyx campanulate, ten ribbed, 
its teeth broad acuminate, rigid, ciliated, unequal, the lower one 
largest, three ribbed, the others single ribbed, all at length spread- 
ing; leaflets oblong, obovate, obtuse, or notched, sub-dentate ; 
stipules long, narrow, awl-shaped ; stem ascending. 
English Botany, t. 220.—English Flora, vol. iii. p. 303.—Hooker, 
British Flora, ed. 4. vol. i. p. 275.—Lindley, Synopsis, p. 80. 
foot tapering. Stem ascending, or erect, round, striated, nearly 
smooth, branched and leafy. Leaves alternate below, on long slender 
footstalks, and the leaflets oblong, obtuse, or notched, the upper pair 
opposite, narrow, linear, acutely pointed, all single ribbed, with slender 
lateral veins, dark green, paler beneath, and downy, the margins 
towards the apex somewhat toothed. Stipules long, narrow, linear, 
pale, membranous, with dark veins. Inflorescence terminal and some- 
times axillary globose heads of crowded flowers, sessile, or nearly so 
in the axis of the upper pair of leaves. Calyx sub-campanulate, 
smooth, or somewhat downy, distinctly ten ribbed at the base, the 
teeth rigid, broadly acuminate, the lower one much the largest, three 
ribbed, the rest single ribbed, all ciliated on the margin, and spread- 
ing, the mouth closed with a hardened ring. Legume membranous, 
single seeded. Seed roundish, with a prominent radicle. 
Habitat—Saline marshy places near the sea, on the east and 
south coast of England; Newport, Monmouthshire; and near Kil. 
barick Church, Ireland. 
Annual; fowering in June and July. 
This is readily distinguished from all the other of our species, by its 
rigid looking heads and remarkable calyx enlarging and dilating its 
teeth after flowering. It is not a very common plant with us, but 
we have found it frequent in various parts of the maritime pastures of 
Italy; and about Pisa it is commonly cultivated in the low damp 
meadows, where it seems to flourish extremely well, and to produce an 
abundant crop, which is cut green, as well as made into hay. It is 
probable that it might be cultivated with advantage in low damp 
meadows with us, especially in the southern districts of England and 
Treland. 
5. T. stella'tum, Linn. (Fig. 1126.) Starry-headed Trefoil. Heads 
terminal, sub-globose, pedunculated, hairy; calyx ten ribbed, its 
mouth closed with hairs, its teeth longer than the corolla, becoming 
dilated at the base and veiny ; leayes obcordate, toothed towards the 
apex; stipules broadly ovate, membranous, veiny, toothed on the 
margin, downy, as well as the ascending stem. 
