Rosaceae. 57 



POTENTIL'LA PROCUM'BENS (69). 7. Rootstock woody, leaves 

 (489) ternate, leaflets obovate trifid, petals 5—7, small yellow. Stony places. 



POTENTIL'LA ARGENT'EA (57). 6—7. Stems 6—18 inches 



(493) slender, branched lower leaves petiolate, upper leaves sessile, 5-foliolate 



leaflets cut, hoary beneath cuneate, flowers small yellow. Dry pastures, 



X.—POTERIUM. 



POTE'RIUM SANGUISOR'BA{7o). Salad Burnet. 6—8. Flowers 



(503) monoecious in a roundish head, upper flowers bearing crimson-tufted 



pistils, lower ones stamens, calyx 4-cleft, petals o, stamens many with 



long weak filaments, achenes 2, leaves pinnate, leaflets ovate serrate 



5 — 10 pairs. Dry pastures. 



Xl.—SANGUISORBA. 



SANGUISOR'BA OFFICINA'LIS (62). Great Burnet. 6—8. Calyx 

 (505) 4-lobed superior purple, petals o, stamens 4, filaments not longer than 



the calyx, achenes 2, flowers in a cylindric head, leaves pinnate, leaflets 



3 — 5 pairs. Moist meadows. Fig. p. 59. 



XII.—ALCHEMILLA. 



Flowers minute in dense cymes, calyx 4 — 5 cleft its tube nearly closed 

 by the disk, petals o, stamens i — 4, achenes i — 2 enclosed in the calyx tube. 



ALCHEMIL'LA VULGA'RIS (loi). Lady's Mantle. 5—8. Leaves 



(498) entire reniform lobed plaited, flowers in terminal panicles. Hilly 

 pastures. Fig. p. 44. 



ALCHEMIL'LA ARVEN'SIS (108). Parsley- Piert. 5—8. Leaves 

 (497) small trifid pubescent, lobes cut, flowers minute in sessile axillary 

 heads. Fields and waste places. 



Alchemilla alpina (27). 6—8. Leaves divided nearly to the base into 5 — 7 



(499) almost entire segments silvery underneath, flowers minute corymbose. 



[S. { Cautley Spout). 



XIU.—CRAT^GUS. 



CRATiE'GUSOXYACAN'THA(iio). Hawthorn, May. 5—6. Calyx 

 (534) 5-lobed, segments short acute, petals 5, stamens many, styles i — 6, 



fruit red oval or round enclosing bony stones, leaves variable lobed 



crenate, stipules leafy. Woods and hedges. 



X.IV.—PYRUS. 



Calyx 5-toothed, petals 5 large roundish, stamens many, styles 2, 3, or 5, 

 fruit fleshy with 5 cartilaginous 2-seeded cells. 



Flowers in sessile umbels, . , P. Malus 



Flowers in corymbs, 262 



