KEY TO THE CRATJEGUS 175 



E. Leaves widest near the middle; stamens S-li' ; fruit globular 

 ( inch), crimson, ripening near end of Sept. and remaining on 

 for several weeks on erect slender stems ; thorns slender, long, 

 2-4 inches. LONU-TIIORNED HAW (20-5) Crataigus macra- 

 cantha. 



D. Leaves thin, only half as wide as long, and widest near the 

 center ; flowers inch wide ; stamens 20 with rose-colored an- 

 thers ; fruit oval or pear-shaped, ' inch long, dull red, with 2-3- 

 stones ; spines slender, straight (1-2 inches). PEAR HAW 

 Cratsegus Cliapmfuri I'lukenetii. "(0. tomentosa of the Linneuu 

 herbarium.) 



* Leaves deciduous, narrow and unnotched at base, somewhat wedge- 



shaped, notched at end, and sometimes somewhat 3-lobed at tip. 



(P.) 



F. Tall shrubs or small trees occasionally 30 feet high with many- 

 flowered clusters. (G. ) 



G. Leaves wedge-shaped, usually thick, dark green and shining 

 above (1-4 inches long); fruit globose (| inch long) with 

 greenish dry and mealy flesh and usually 2 stones, ripening in 

 Oct. and lasting through the winter ; stamens 10 with rose- 

 colored anthers. COCKSPUH THORN Oratasgus Crus-galli. 

 G. Leaves obovate, sometimes slightly lobed beyond the middle, 

 2-3 inches long ; fruit red or yellow with white dots, oblong 

 (| inch), on stout, drooping stems, ripening and falling in Oct.; 

 stamens 20 with rose-colored, or yellow, anthers. LARGE- 

 FRUITED THORN (266) Cratsegus punctata. 



G. Leaves spatulate or oblanceolate, often 3-lobed at the end, 

 1-2 inches long; fruit globose, small, inch, ripening in Oct.; 

 stamens 20 with rose-colored anthers. SMALL-FRUITED THORN 

 Crataegus spathulata. 



F. Small shrub 3-10 feet high ; flowers usually solitary, % inch broad ; 

 leaves f-lf inches long ; thorns numerous, '-2 inches long ; fruit 

 globose, yellow, | inch. ONE-FLOWERED THORN Crata>gus uni- 

 flora (C. tomentosa of the Linnean description). 



* Leaves evergreen, small, J-lf inches 'long, narrow with crennlated 



edges ; flowers white, small, in clusters, stamens about 20 with yel- 

 low anthers; fruit small, inch, bright red (rarely yellow or 

 white), remaining on through the winter ; twigs ending in many 

 sharp thorns. Usually small shrubs rarely 10 feet high ; hardy to 

 Massachusetts if somewhat protected, genus Pyracantha, often 

 called Cratsegus. (H.) 



H. Young twigs grayish-pubescent; leaves lanceolate, f-] a jnelies 

 long; fruit bright red, orange, or white. EVKRGKKKN THORN 



