PRUS US. 107 



Suborder I. Amygdalece. 



1. PRU'NUS Linn. 



* Young leaves convolute. Drupe glaucous. 



1. P. spinosa (L.) ; ped. solitary or in pairs, 1. elliptic or ovate- 

 lanceolate rather dowuy beneath. P. communis (Huds.) ed. viii. 

 a; branches spinous, ped. solitary glabrous, 1. usually glabrous, 

 fr. globose. Sy. E. B. 408. [/3. macrocarpa (Wallr.) P.fruticans 

 (Wei he) ; branches spinbus, ped. glabrous usually in pairs, 1. pubescent 

 on the veins beneath, fl. and fr. larger than in a, fr. globose-] y. P. 

 insititia (L.) ; branches slightly spinous, ped. and underside of 

 1. usually downy, fr. globose. JE. B. 841. *6\ P. domestica 

 (L.) ; branches "without spines, ped. glabrous, 1. hairy about the 

 midrib beneath, fr. oblong. E. J5. 1783. a is a shrub with 

 crooked and much armed black branches and fl. before the leaves ; 

 /3 and y taller shrubs with fl. and 1. usually together, y with 

 straight and slightly armed brown branches ; d a small tree 

 with straightish branches. Thickets. 6 not indigenous. Sh. 

 IV. V. a. Sloe. Blackthorn, y. Bullace. 8. Plum. E. S. I. 



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



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

 serrate glabrous./?, in pendulous racemes, fr. rouu dish-oblong, 

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

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

 wrinkled. \Voodsandhedges. T. V. Bird-Cherry. E.S.I. 



3. P. A'vium (L.) ; arborescent, 1. long -stalked drooping oblong- 

 obovate suddenly cuspidate incise- serrate downy beneath, calyx- 

 tube constricted below the entire sepals, pet. flaccid, " fr. heart* 

 shaped." E. B. 706. A tree 2030 feet high. Outer scales 

 of the leaf-buds deflexed. Flower-buds not leafy. Fl. in 

 umbels. Pet. bifid, with a minute claw. "Fr. firm, bitter, 

 black or red with staining juice." Woods. T. V. Wild 

 Cherry. Gean. E. S. 1. 



4. P. Cer'asus (L.) ; fruticose, /. short-stalked, not drooping. 

 oblong-obovate or ovate- lanceolate doubly cr en ate- serrate gla- 

 brous, calyx-tube not constricted, " pet. firm," fruit round. E. B. 

 8. 2863. An erect bushy shrub 38 feet high. Umbels 

 scattered. Outer scales of the leaf-buds erect. Inner scales of 

 the flower-buds leaflike. Sep. crenate-serrate. Pet. subemar- 

 ginate, with a claw. " Fr. juicy, acid, always red, not staining/' 

 Hedges, Sh. V. Dwarf Cherry. E. I. 



