Crat^gus. XL VIII. ROSACEiE. :ii,> 



l\ 3. A. PUMiLA, Dwarf donble-fiowering Almond. — L/vs. lanceolate, doubly ser- 

 rate; fis. pedicellate.— Native of China. A low shrub, highly ornamental, 

 common in cultivation. Stems 2 — 3f high, branching. Leaves 3 — 5' by § — 1', 

 acute at each end, smooth. Flowers very numerous, clothing the whole shrub 

 in their roseate hue, while the leaves are yet small. May, Jn. -j- 



Suborder 2.— P O M E iE . 



Ovaries 2 — 5 (rarely 1,) cohering with the sides of the persistent 



calyx and with each other. Fruit a pome. 



6. CRAT^GUS. 



Gr. Kparos, strength; on account of the firmnesa of the wood. 



Calyx urceolate, limb 5-cleft ; petals 5 ; stamens 00 ; ovaries 1 — 5, 

 with as many styles ; pome fleshy, containing 1 — 5 bony, 1 -seeded car- 

 pels, and crowned at the summit by the persistent calyx and disk. — 

 Trees or shrubs, armed with thorns. Lvs. simple, often lobed. Bracts 

 subulate, deciduous. Fls. corymbose. 



1. C. cocciNEA. (C. Crus-galli. Bv.\ C. glandulosa. Willd.) Crimson- 

 fruited Thorn. White Thorn. — Lvs. broadly ovate, acutely serrate and 



sub (9)-lobed, thin and smooth, subacuminate, abrupt at base ; petioles long, slen- 

 der, and (with the calyx) smooth and subglandular ; sty. 3 — 5. — A thorny shrub 

 or small tree, 10 — 201" high, in thickets, by streams, &c.. Can. and U. S. 

 Branches crooked and spreading, branchlets and thorns whitish. Thorns stout, 

 . rigid, .sharp, a little recurved, about IJ' long. Leaves li — 2J' long, | as wide, 

 lobed, or (rather) coarsely, doubly acuminate-serrate. Petioles very slender, J 

 as long as the lamina. Flowers white, in paniculate, lateral corymbs of about 

 12. Fruits — 5" diam., bright purple, eatable in Sept. Fls. May. 



2. C. Crus-galli. (Mespilus. Lam. i^c.) Cock-spur Thorn. 



Lws. obovate-cuneiform or oblanceolate, subsessile, serrate, coriaceous, 

 shining above ; spines very long ; corymbs glabrous ; sep. lanceolate, subserrate ; 

 sty. 1 (2 or 3).— Hedges and thickets. Can. and U. S., rare. Shrub 10— 20f 

 high, much branched. Thorns 2 — 3' Igng, straight, sharp, and rather slender. 

 Leaves 1 — 2i' long, ^ — § as wide, tjipOTing and entire at base, mostly obtuse at 

 apex ; petioles 1 — 5" long. Flo^^fers white, fragrant, in corymbs of about 15, 

 on very short, lateral branchlets. Fruit pyrifbrm, dull red, 2 — 3" diam., per- 

 sistent during winter, unles^eaten by birds. Jn. 

 /?. pyracanthifolia. Ait. — Lvs. oblong-lanceolate, petioles J' long. 



3. C. PUNCTATA. Jacq. (C. latifolia. DC. Mespilus. Spach.) Thorn. 

 Lvs. cuneiform-obovate, doubly and often incisely serrate, entire at base 



and narrowed to a petiole, veins straight and prominent, pubescent beneath ; 

 corymbs and cat. villose-pubescent ; sty. 3 (1 or 2); //-. globo-se, punctate. — Bor- 

 ders of woods, U. S. and Can. Tree"l2 — 25f high. Branches wide-spreading, 

 crooked, covered with cinerous bark. Thorns stout, sharp, 1 — 2' long, some- 

 times wanting. Leaves 1^ — 2 J' long, * as wide, acute or short acuminate; 

 "petioles J — 1' long. Flowers white, in somewhat leafy, compound corymbs of 

 8 — 15. Fruit 5 — 8" diam., red or yellowish, eatable in Sept. M. May, Jn. 



4. C. TOMENTosA. (C. pyrifolia. Ait. C. lobata. Bosc. C. flava. Hook.) 

 Black TAnrn. — Lvs. oval, or elliptic-ovate, narrowed at base into a mar- 



gmed petiole, subplicate, incisely and doubly serrate, smoothish above, tomen- 



tose beneath; corymbs large, tomentose when young; stij. 3—5; //•. pyriform. 



Thickets and hedges, Can. S. to Ky. and Gar. — A large shrub, 12-^15f high, 

 armed with sharp thorns 1 — 2' long. Leaves 3 — 5' long, J — | as wide, acute 

 at apex ; margined petiole A — 1' long. Fls. lai-ge, fragrant, white, in a leafy corymb 

 uf 8 — 12. Fruit 4—6" diam., orange-red, eatable but rather insipid. May, Jn. 

 0. (Torr. & Gray.) Lvs. strongly plicate, nearly smooth, smaller. 



5. C. OxYCANTiiA. Hav-thorn. English Thorn. 



Lvs. obovate or broad ovate, obtuse, 3 — 7 -lobed, serrate, smoothish, shining 

 above; stip. large, incisely dentate; corymbs glalirous; sfy. 1 — 3; fr. ovoid. 



