POLYPETAI/)US EXOGEi^OUS PLANTS. 257 



CRATJ^GUS, L. Hawthorn. 



Calyx urn-shaped ; the limb 5-cleft, persistent ; petals 5, 

 orbicular, concave; stamens few or many; styles 1-5, dis- 

 tinct; fruit fleshy, containing 1-5 bony nutlets. — Thorny 

 shrub or tree; leaves simple, serrate or variously lobed; 

 flowers white, axillary and solitary, or in corymbs terminat- 

 ing short lateral branches ; stipules on the young branches 

 linear, or lunate and serrate. 



* Corymbs compound, many-jUmered. 

 t Fruit small, not larger than a pea. 



C. SPATHULATA, Miclix. Young brandies tomentose, 

 otherwise nearly smooth and glandless throughout ; leaves 

 small, spatulate, crenate at the summit; those on the young 

 shoots larger and incisely lobed ; calyx-loh^^ very short ; 

 styles 5; fruit very small, red. — A small tree; corymbs 

 sometimes slightly pubescent ; stipules lunate on the young 

 branches. 



C. APIIFOLIA, Michx. Young branches, leaves, and 

 corymbs whitened with soft hairs; leaves small, deltoid, 

 pinnately 5-7-lobed, sharply toothed, nearly smooth when 

 old, truncate or cordate at the base; styles 1-3, filiform; 

 fruit globular, red. — Small tree ; leaves ^'-V long. 



C. CORDATA, Ait. Young branches, leaves, and corymbs 

 pubescent, soon smoothish ; leaves large, deltoid-ovate, trun- 

 cate or cordate at the base, long-petioled, 3-5-lobed and 

 serrate; sjnnes slender; fruit globose, red. — Small tree; 

 leaves 1-3' long; styles 5. 



C. ARBORESCEXS, Ell. Smooth ; leaves thin, oval or 

 elliptical, acute at both ends, finely serrate, sometimes 

 obscurely toothed near the apex, on slender nearly gland- 

 less petioles ; corymbs very numerous ; styles 5 ; friiit ovoid, 

 red. — Small tree, with ash-colored branches; spines stout 



