134 AMYGDALAOEAE (PEACH FAMILY) 



A. Twigs pale or ashy. 



B. Leaves cuneate at base. E. A. cuneata 



BB. Leaves rounded at base. 



C. Calyx lobes erect. U. A. pallida 

 CC. Calyx lobes reflexed. E. A. utahensis 



AA. Twigs not ashy. 

 D. Leaves tomentose beneath when young. 



E. Petals 12-15 mm. long. W. C. E. A. florida 

 EE. Petals about 8 mm. long. E. A. oreophila 



DD. Leaves glabrous even when young. 



F. Leaves bright green; petals about 2 cm. long. E. A. cusickii 

 FF. Leaves whitish green; petals 1-1.5 cm. long. E. A. basalticola 



CRATAEGUS (HAWTHORN) 



Shrubs or small trees. Leaves toothed or lobed. Flowers white. 

 Stamens 5-20. Carpels 2-5, i-seeded. Fruit drupelike, globose or ovoid, 

 crowned with the calyx teeth. (Gk. kratos = strength ; referring to the 

 toughness of the wood.) 



A. Fruit black; spines 1-3 cm. long. 



B. Leaves lobed or incisely and doubly toothed; petiole with scattered glands. 

 W. E. C. douglasii 



BB. Leaves serrate, not incisely toothed or lobed; petiole glandless. E. 



C. rivularis 

 AA. Fruit red; spines 4-6 cm. long. 



C. Leaves oval to orbicular. E. C. sheridana 

 CC. Leaves cuneate-obovate. 



D. Calyx and fruit glabrous. E. C. columbiana 

 DD. Calyx and fruit tomentose. E. C. piper! 



AMYGDALACEAE (PEACH FAMILY) 



Shrubs or trees. Leaves alternate, simple, petioled; stipules 

 small and caducous, or none. Flowers regular, perfect or imperfect. 

 Calyx tubular or campanulate, deciduous; segments 5. Petals 5, 

 on the calyx. Stamens 15-20, on the calyx. Pistils 1-5, distinct; 

 ovary superior, i-celled. Fruit 1-5 separate drupes. Seed i. 



A. Leaves serrate; stipules present but caducous; flowers perfect, not with bad 



odor; carpel i; drupe i. 



B. Stone rough; fruit downy. AMYGDALUS (p. 134) 



BB. Stone smooth; fruit glabrous (except in the Apricot). PRUNUS (p. 135) 



AA. Leaves entire or undulate; stipules none; flowers dioecious, with bad odor; 



carpels 2-5; drupes 2-5. W. C. (Gk. osmeres = smelling; the flowers have 



an unpleasant odor.) Osmaronia cerasiformis (INDIAN PLUM) 



AMYGDALUS (PEACH) 

 (The Latin name of the Peach.) 



A. Pulp edible; seed not edible. W. E. A. persica (PEACH) 



AA. Pulp not edible, seed edible. W. E. A. amygdalus (ALMOND) 



