490 REPORT OF NEW JERSEY STATE MUSEUM. 



Common in the Middle, Pine Barren- and Cape May districts 

 and at a few stations in the northern part of the State, but mainly 

 within the coastal plain. 



This is the common thorn-bush of the coastal plain region. 



Fl. — 'Mid-May to early June. Pr. — September into October. 



Middle District. — Pt. Pleasant, New Egypt, Florence Hts., Mborestown, 

 Medford (S), Locust Grove (S), Washington Park, National Park, Red 

 Bank, Griffith's Swamp, Fairton (S), Newfield, Centerton (S). 



Pine Barrens. — Atco, Berlin, Cedar Brook, Forked River, Speedwell, 

 Quaker Bridge, Forked River, Toms River, Hammonton, Folsom. 



Cape May. — Cold Spring, Bennett, N. England Creek. 



Crataegus pausiaca Ashe. Pennsylvania Thorn. 



Cratcegus pausiaca Ashe, Ann. Carnegie Mus. 1 : 390. 1902. [Alleghany Co., 

 Pa.]. 



Probably common northward, but known from our range 

 only at Red Bank, Gloucester County. 

 Fl. — Mid- May to early June. Fr. — October into November. 



Middle District.— Red Bank. 



Family DRUPACE^. Peaches, Plums and Cherries. 

 Key to the Species. 



a. Outer covering of fruit velvety. [Amygdalus ^ersica]* 



aa. Outer covering of fruit glabrous. 



6. Flowers in umbels or fascicles expanding with or before the leaves. ^ 

 c. Fruit, large, stone flattened. 



d. Leaves abruptly acuminate. Prunus americana, p. 491 



dd. Leaves gradually acuminate. 



e. Leaves glabrous when mature. P. angustifolia, p. 491 



ee. Leaves pubescent below when mature. P. maritima, p. 491 

 cc. Fruit smaller, stone globose. 



d. Leaves glabrous, pedicels short, fruit sour. [P. cerasus]^ 



dd. Leaves pubescent beneath, pedicels long, fruit sweet. 



[P. avium]t 



bb. Flowers in racemes terminating branches of the season, stones 



globose. p serotina, p. 492 



* Peach Tree, occasionally escaping from cultivation, 

 t Sour Cherry, occasionally escaping. 

 t Sweet Cherry, frequently escaping. 



