980 TRIFOLIUM. [CLASS XVII. ORDER 111 
stall feeding. ‘The numerous heads of beautiful bright yellow flowers 
which they produce, render it a very pretty gay looking plant, but 
more especially some of the larger flowered and deeper coloured 
species, which grow in great profusion on the Continent, as the 
T. agrarium, T. spadiceum, &e, ; 
3. Vesicastrum. Ser. Flowers in a rounded head. Calyx mouth 
naked, becoming inflated, membranous, and reticulated with 
coloured veins. 
14, 7. fragif'erum, Linn. (Fig. 1136.) Strawberry headed Trefoil. 
Heads globose, on long axillary peduncles; calyx after flowering 
inflated, membranous, reticulated and downy, the two upper teeth 
elongated and recurved; leaves obovate or obcordate; stipules 
narrow, linear; stem prostrate. 
English Botany, t. 1050.—English Flora, vol. iii. p. 308.—Hooker, 
British Flora, ed. 4. vol. i p. 277.—Lindley, Synopsis, p. 81. 
Roots fibrous. Stems prostrate, long, spreading, branched, and 
taking root from the joints, leafy, round and smooth. Leaves with 
long footstalks, leaflets all sessile, or nearly so, ovate or obovate, or 
obcordate, finely toothed, a dark green, paler beneath, with a promi- 
nent mid-rib and numerous fine lateral veins. Stipules pale, mem- 
branous, linear lanceolate, with a slender elongated point. Inflorescence 
a globose head of numerous crowded pink flowers, elevated on a long 
smooth or slightly downy pedicle from the axis of the leaves, enveloped 
at the base in an involucre, cut into numerous narrow lanceolate 
segments. Calyx downy, tubular, two lipped, the upper side becom- 
ing after flowering much inflated, thin, membranous, and bladdery, 
reticulated with numerous coloured veins, from this part of the calyx 
enlarging, and the under side remaining the same, the two upper 
teeth are curved downwards, so that it forms a complete covering and 
protection from rain, &c. for the inclosed legume. Corolla small, pale 
rose colour, soon fading and withering away. Zegumesmall, roundish, 
two seeded. 
Habitat.—Moist meadows and pastures. 
Perennial ; flowering in July and August. 
This appears to be of little or no agricultural value; but is a re- 
markable plant, from the change which the calyx undergoes after 
flowering. Its appearance is that of a strawberry, from which it has 
derived its name. 
15. 7. resupina'tum, Linn. (Fig. 1137.) Reversed Trefoil. Heads 
globose, on axillary peduncles; calyx after flowering membranous, 
inflated into a narrow tubular neck, netted with longitudinal and 
transverse veins, downy ; leaflets obovate, acutely serrated; stipules 
linear lanceolate, short ; stem prostrate. 
English Botany, Suppl. t. 2789.—Hooker, British Heras ed. 4. 
vol. i. p. 277.—Lindley, Synopsis, Suppl. p. 323. 
