42 ENGLISH BOTANY. 
Very local; probably confined to the counties of Essex, Cambridge, 
ITerts, Suffolk, and Norfolk. 
England. Perennial. Summer and Autumn. 
Rootstock many-headed, producing tufts of long-stalked leaves 
and flowering stems, which are 9 to 18 inches high, erect, with a 
slight curvature at the base. Leaflets 4 to 1 inch long, those of 
lower leaves obovate, obcordate, becoming more oval or elliptical 
and entire on the apex, as they are placed higher on the stem. 
Stipules with long slender triangular points. The uppermost of 
the alternate leaves remote from the pair of opposite ones: these 
latter are generally considerably smaller in size, very shortly 
stalked, and with the stipules broader. Flower-heads + to 1} inch 
above the involucre, # to 14 inch in diameter. Flowers ? inch 
long, ochreous. The calyx-teeth erect when in flower, but spreading 
when in fruit, especially the lower one, which becomes reflexed. 
Pod longitudinally striate, opening by an operculum. Seed ovoid, 
smooth. Stem and petioles thickly clothed with spreading tawny 
hairs, the leaves with adpressed hairs. 
This plant has much the habit of T. pratense, but the stipules 
are more like those of T. medium. The pale-yellow flowers form a 
conspicuous distinction from the common states of both these 
plants, but one on which implicit confidence cannot be placed, as T. 
pratense sometimes has flowers of that colour. The calyx-teeth 
are decidedly broader at the base, and tapering gradually in a 
triangular shape, and much more strongly nerved than in either 
of the two preceding species. 
Sulphur-coloured Trefoil. 
French, 7'refle Jaundtre. German, Blassgelber Klee. 
This species has been recommended to the experimental agriculturist as a sub- 
stitute for others in certain soils and situations ; but it has met with no favour, and is 
not often grown at all. 
SPECIES V—TRIFOLIUM MARITIMUM. Juds. 
Puate CCCL. 
Rootstock none. Stems several, ascending, branched. Leaflets 
oblanceolate, entire. Stipules herbaceous, with few nerves which 
do not anastomose, adnate for less than half their length, with 
the free portion elongated, linear-triangular. Uppermost leaves 
opposite, shortly stalked, a little below the flower-heads, with 
slightly dilated stipules. Flower-heads stalked, terminating 
the stem and branches, globose-ovoid, becoming ovate-ovoid in 
fruit. Calyx-tube 10-ribbed, sub-glabrous, the throat with lateral 
callosities nearly closing its mouth; teeth rather shorter than 
