100 26. ROSACEA. 



Suborder HI. POMEyE. 



Calyx-tube thick and fleshy, in fruit adhering to the carpels 

 and forming a 1 — 6-celled pome : thus fl. appearing superior. 



15. OBAT^arrs. Calyx-segments 5, acute. Pet. 5. Styles 

 1 — 5. Fr. oval or round, concealing the v^per end of the 

 1 — 5 hony 1 — 2-seeded carpeh. 



16. CoTONBASTBH.. Oalyx-segments 6. Pet. 5. Styles 2 — 5. 

 Fr. turbinate, its nuts adhering to the sides of the calyx 

 but not cohering at the centre. — Stam. erect, as long as the 

 teeth of the calyx. 



17. Mbspiltjs. Calyx-segments 6, leaflike. Pet. 6. Styles 

 2 — 5. Fr. turbinate with the upper end of the hony carpels 

 exposed ; disk dilated, almost as broad as the fruit. 



18. Pyeus. Cal. 6-toothed. Pet. 6. Styles 2—5. Fr. 

 fleshy vnth 5 cartilaginous or membranous distinct 2-seeded 

 cells. Testa cartilaginous. 



Suborder I. Amygdalea. 



1. Petj'ntts. 



* Young leaves convolute. Ih-upe glaucous. 



1. P. communis (Huds.) ; ped. solitary or in pairs, 1. elliptic 

 or ovate-lanceolate rather downy beneath. — a. P. spinosa (L.) ; 

 branches spinous, ped. glabrous, 1. usually glabrous, fr. globose. 

 Sy. E. B. 408. — ^. P. insititia (L.) ; branches slightly spinous, 

 ped. and underside of 1. usually downy, fr. globose. H. B. 841. , 

 — *y. P. dotnestica (1j.) ; branches without spines, ped. glabrous, 

 1. hairy about the midrib beneath, fr. oblong. E. B. 1783. — 

 a is a shrub with crooked and much armed black branches and 



fl. before the leaves ; /3 a taller shrub with straight and slightly 

 armed brown branches and ^. and I. usually together ; y a 

 small tree with straightish branches. — Thickets, y not indigenous. 

 Sh. IV. V. u. iSloe. Blackthorn. /3. Bullace. y. Plum. B. S. I. 



** Young leaves conduplicate. Drupe not glaucous. Cbeasus. 



2. P. Pddus (L.) ; arborescent, 1. obovate-lanceolate finely 

 serrate glabrous, _;?. in pendulous racemes, f r. roundish-oblong. — ■ 

 E. B. 1383. — A small tree. L. minutely doubly serrate. Fl. 

 white, many, in a lax raceme. Fr. black, harsh, bitter ; nut 

 wrinMed. — Woods and hedges. T. V. Bird-Cherry. E.S.I. 



