48 ENGLISH BOTANY. 
SPECIES X—TRIFOLIUM STRIATUM. Linn. 
Pirate CCCLVI. . 
Rootstock none. Stems numerous, nearly straight, ascending 
or procumbent, simple or slightly branched. Leaflets obovate 
or oblanceolate, faintly denticulate at the apical margin, the 
lateral veins straight, not prominent. Stipules adnate for about 
half their length, with the free portion short, triangular, acumi- 
nated into a long cuspidate point; the upper ones, which embrace 
the flower-heads, much dilated. Heads terminal and axillary, 
sessile, the terminal ones frequently in pairs, ovate-ovoid, at length 
ovoid-oblong, widest at the base. Calyx-tube oblong, strongly 
10-ribbed, becoming swollen and ovoid in fruit, with an indistinct 
callous ring in the throat; teeth triangular-subulate, spinescent, 
with a strong nerve, the four upper ones nearly equal, about half 
the length of the calyx-tube, the lower one a little exceeding the 
others; all rigid and spreading in fruit. Plant more or less softly 
hairy. 
On dry pastures and in waste places. Rather common in Eng- 
land. In Scotland it is confined to the East coast, where it is found 
as far North as Kincardineshire. 
England, Scotland, Ireland. Annual. Summer. 
Stems 3 to 18 inches long, generally numerous and spreading 
in a circle, often quite prostrate, but sometimes ascending or even 
sub-erect. Leaflets { to #inch long, rounded or truncate at the apex, 
with none of the veins prominent except the midrib. Flower-heads 
dense, + to 4 inch long, increasing to # inch when in fruit, mostly 
terminating the stem and short lateral branches (but there are also 
some sessile in the axils of the leaves), those of the main stems 
mostly in pairs, the others solitary. Flowers 4 inch long, pale rose- 
colour. Calyx bulging, and becoming very strongly ribbed in fruit, 
densely clothed with soft hairs, the callous ring very indistinct, 
hairy, the hairs not closing the tube. Corolla a little longer than 
the calyx-teeth. Pod included. Seed ovoid, yellowish - brown. 
Stem, petioles, and leaflets with ascending or adpressed hairs. Plant 
dull-green. 
A larger and less rigid plant than the last, with the leaflets much 
less rigid and without prominent veins. ‘The upper stipules are 
much dilated, membranous, with purplish veins; the calyx-tube 
much swollen in fruit, more strongly ribbed, and the teeth shorter 
and narrower. 
Soft-knotted Trefoil. 
French, 7réfle Strié. German, Gestreifter Klee. 
