SPECIES AND VARIETIES. 373 



''* Flowers sessile. 

 f Calyx not inflafed. 



T. pratense : stem erect, 1-2 feet high ; leaflets oval, emargi- 

 nate, the upper ones entire, apiculate ; flowers purplish, some- 

 times white, the heads ovate, dense, sessile; calyx 10-nerved, 

 hairy. — Purple Clover. — Mountainous pastures, fields. Fl. 

 May to September. 



T. arvense : annual ; stem erect, or in a maritime form, 

 procumbent, finely hairy; leaflets linear-oblong; flowers small, 

 whitish, almost concealed by the very hairy calyx, the heads 

 nearly cylindrical, stalked ; calyx 10-nerved, hairy. — Hare^s- 

 foot Trefoil. — Sandy fields. Fl. July to September. 



ft Calyx loith the upper lip inflated after flowering. 

 T. fragifemm : stem creeping ; leaflets obovate, emarginate, 

 minutely serrate; flowers purplish-red, the heads globose, large, 

 remarkable when in fruit for their curious calyces ; peduncles 

 axillary longer than the leaves ; calyx of the fruit membranous 

 reticulated downy. — Damp pastures. Fl. July to September. 



(16) Sedum. 



S. Telephium : stem erect, 1-2 feet high ; leaves large and 

 broad, oval-oblong, dentate, smooth, rounded at the base, and 

 sessile ; flowers purple, handsome, in dense corymbs. — Orpine, 

 or Live-long. — Hedge-banks on a gravelly soil. Fl. July to 

 September. 



(17) Parnassia. 



p. palustris: leaves mostly radical, cordate, stalked; the 

 stem-leaves amplexicaul; petals white, veined, with a short 

 claw; filaments of the petal oid scales 9-13; glands of the 

 scales yellow. — Wet, boggy places. Fl. August to October. 



