38 ENGLISH BOTANY, 



the free portion short, triangular, acuminated into an elongated 

 setaceous point applied to the petiole ; uppermost leaves ojiposite, 

 close to the head of flowers, with greatly dilated stipules. Flower- 

 heads sessile, terminating the stem and branches, at first sub- 

 globular, at length ovoid. Calyx-tube 10-nerved, hau*y exteriorly, 

 and hairy and with a slight callous ring at the throat ; teeth very 

 slender, subulate-setaceous, with a slender central nerve, the 4 

 upper ones about equal to the calyx-tube, the lower one exceeding 

 it by one-half, undergoing very little alteration in fruit. Corolla 

 generally longer than the calyx. Plant pubescent or sub-glabrous. 



Var. a, satmim. 



T. sativum, Mill. Reich. Fl. Excurs. p. 494. 



Stem erect and robust, furrowed, hollow. Leaflets ovate-oval, 

 nearly entire. Stipules vei'y large. Calyx-teeth a little shorter 

 than the tube, erect when in fruit. 



Var. ^, si/lveslre. 



T. pratense, Hekh. Fl. Excurs. p. 494. Boreau, Fl. du Centre de la Fr. ed. iii. p. 156. 



Stem ascending, rather slender, striated, usually solid. 

 Leaflets oval or elliptical-oval, usually denticulate. Stipules much 

 smaller than in var. a. Calyx-teeth about equal to the tube, and 

 spreading when in fruit. Corolla longer than the calyx-teeth. 



Var. y, jMi'viJIonim. 



Stem arched, ascending. Leaflets elliptical or oval-elliptical, 

 finely denticulate. Calyx-teeth as long as the tube, and equalling 

 or exceeding the corolla. 



Var. a, by the borders of fields ; escaped from cultivation. Var. 

 ^, in pastures, roadsides, and waste places ; very common, and 

 generally distributed. Var. 7, in dry places; I have seen speci- 

 mens only from Forfarshire. 



England, Scotland, Ireland. Perennial or biennial. Spring 

 to Autumn. 



Var. a (which is the cultivated red clover) has the stems 1 to 

 2 feet high. Lower leaves on long footstalks ; leaflets flaccid, 

 1 to 2 inches long, those of the lower leaves frequently notched 

 at the apex. Stipules of the lower leaves. 1 to 1^ inch long, the 

 upper ones much shorter and broader, whitish and sub-mem- 

 brauous, with numerous strongly-marked veins, which anasto- 

 mose at the margins, aduate for the grealer portion of their Icugth, 



