Long-Spined Thorn 



479 



lobes linear, long-pointed, smooth on the outside, slightly long-hairy on the inside, 

 remotely glandular-toothed; stamens lo to 20; anthers pink; styles 2 to 4. The 

 fruit, which ripens the last of September, is oblong to nearly round, about 10 mm. 

 thick, cherry-red; the flesh is yellow, mealy, soft and acid; it contains 2 to 4 nutlets, 

 5 to 7 mm. long, 5 to 7 mm, thick, ridged on the back, the inner faces having a 

 shallow pit, but the pit is sometimes faint or wanting on individual nutlets. 



CratxEgiis scabrida Sargent is a form commonly having about ten stamens and 

 with the upper surface of the leaves rougher. This occurs in New England and 

 New York. 



Crataegus Egglestoni Sargent is a lo-stamened form with slightly pubescent 

 corymbs and rounder leaves. This is the most common form of the Green Moun- 

 tains and perhaps of the Adirondacks, ascending to nearly 800 meters in the 

 Green Mountains. 



CratcEgus cydophylla Sargent appears to be a 20-stamened form. 



47. LONG-SPINED THORN Crataegus macracantha Loddiges 



This species grows on rich hillsides, commonly on limestone, from Nova Scotia 

 south through New England to Pennsylvania and west along the Great Lakes to 

 southeastern Minnesota and northern Illinois. It is a tree sometimes 6 meters 

 high, with ascending and wide-spreading branches, forming an irregular broad 

 crown; the bark is gray; the twigs 

 are smooth, shining, chestnut-brown, 

 with numerous chestnut-brown 

 curved spines from 4 to 10 cm. long. 



The leaves are rhombic-ovate 

 to obovate, from 3 to 8 cm. long, 

 2.5 to 6 cm. wide, slightly hairy on 

 the lower surface, sometimes a lit- 

 tle hairy above when young, be- 

 coming smooth except along the 

 veins beneath, pointed at the apex, 

 wedge-shaped at the base, doubly 

 toothed, with lobes toward the apex, 

 dark green and shining above, paler ^^- 437- - Long-spined Thorn, 



beneath, leathery; the leaf-stalks are slightly winged, i to 2 cm. long. The flowers 

 are about 2 cm. wide, in many-flowered, short-hairy cor\'mbs; calyx hair}% the 

 lobes sometimes nearly smooth, lanceolate, long-pointed and with long-pointed 

 gland-tipped teeth; stamens 10 to 20, commonly about 10; anthers white to pink; 

 styles 2 or 3. The fruit, ripening in September, is globose, hair}-, its calyx-lobes 

 reflexed; the flesh is yellow, sweet and pulpy, containing 2 or 3 nutlets, 5 to 7 

 mm. long, ridged on the back, the front or inner surfaces deeply pitted, the 

 nest of nutlets 5 to 7 mm. thick. 



