58 ENGLISH BOTANY. 
SPECIES XVIL—TRIFOLIUM FRAGIFERUM. Linn. 
Pirate CCCLXIII. 
Rootstock branched. Stems prostrate, rooting at the nodes, the 
extremities sometimes ascending. Leaves on rather long stalks. 
Leaflets oval or obovate, rounded or slightly notched at the points, 
denticulated at the margins, with prominent veins. Stipules adnate 
for less than half their length, oblong, with the free portion tri- 
angular, gradually acuminated into a long subulate point. Flower- 
heads all axillary, on stalks much exceeding their own length, and 
longer than the leaves from which they spring, solitary, globular- 
depressed, at length spherical and very dense. External bracts 
lanceolate, acute, forming a distinct involucre about as long as the 
calyces. Flowers scarcely stalked, slightly reflexed after flowering. 
Calyx-tube in flower oblong, striate, downy above, with the teeth 
subulate-setaceous, nearly equal, and about as long as the tube; in 
fruit having the upper portion very much swollen and becoming 
convex, with the convexity greatest near the apex, reticulated, mem- 
branous, and carrying forward the two projecting upper teeth so 
that they much exceed the lower. Corolla not turned upside down, 
not twice as long as the calyx, shrivelling. Plant sub-glabrous. 
In moist meadows and by the sides of ditches, and on commons. 
Frequent and generally distributed in England; rare in Scotland, 
where it has only been observed in Haddingtonshire and Fifeshire. 
England, Scotland, Ireland. Perennial. Summer 
and Autumn. 
When in flower, this species is extremely like small specimens 
of T. repens, these two being the only British species which have 
rooting stems. In the present species the flower-heads are smaller, 
seldom 3 inch across, and have the bracts at the base forming a 
distinct involucre, by which the species may be easily recognized 
in this state. The flowers are also smaller, about + inch long, pale 
purplish-rose, with the calyx much longer in proportion, with longer 
teeth, and downy on the back. In fruit this plant cannot be mis- 
taken for any other; the fruiting-heads are 3 inch across, with 
the calyces enormously enlarged in the portion which represents 
the 2 upper sepals, while that which corresponds with the 3 lower 
ones remains nearly unaltered; the upper part becomes # inch long, 
half pear-shaped, enlarging gradually from the base to near the 
apex, Where it again rapidly contracts to the base of the upper 
teeth, which are thus carried out far beyond the lower ones: this 
upper portion is also strongly net-veined, and having usually a 
