PO.MACEAE 205 



Although very Httle has been done in the way of describing 

 new species of Crataegus from the southeastern states since the 

 cessation of Mr. Beadle's activities in 1U02, Prof. Sargent con- 

 tinued to work on material from farther north, and the second 

 edition of his Manual (1922) includes 153 species, in 2"2 tribes. 

 The second edition of Sudworth's Check List (1!»27) enumerates 

 nearly 200 supposedly arborescent forms (186 species and 12 

 varieties) of Crataegus, in 22 tribes. Of these forms one is es- 

 caped from cultivation, one is a horticultural variety, and one is 

 supposed to be a natural hybrid. About 123 of them were first 

 described by Sargent, and 36 by Beadle. 



Seven of the forms listed by Sudworth are known only from 

 Canada (though his work was intended to cover the United States 

 only), 73 others are confined to the region of the northern manuals 

 (Virginia to Kansas, and northward to the Arctic circle), 25 are 

 known both north and south of latitude 36°30', 89 are confined 

 to the southeastern states, from Xorth Carolina to Texas (includ- 

 ing one or two extending into ^Mexico), and 3 are only in the 

 Rocky Alountains or farther west. Only about 20 of these species 

 and varieties seem to be recorded from both east and west of the 

 Mississippi River, and about 60 (including the 3 far western ones) 

 from west of the river only, leaving about 118 which are only east 

 of the river. Just about half the total number are known from 

 only one state, and many of these perhaps onlv from a single sta- 

 tion or even a single individual. 



E. J. Palmer in 1925 (Jour. Arnold Arboretum 6:5-128) 

 published a "Synopsis of North American Crataegi", including 

 about 1,155 species, varieties, forms and hybrids, and 231 svno- 

 nyms, without indicating which are trees and which are shrubs, 

 and without undertaking the stupendous task of examining each 

 alleged species critically to make sure that all were valid. Of the 

 total number given specific rank, 60T were described by Sargent, 

 138 by Beadle, K'A by Ashe, and not more than ten by anv other 

 author. About nine-tenths of them are credited to only one state 

 each. 



The known representation of this genus in Alabama has of 

 course increased proportionately to the developments just out- 

 lined. Of the 1-i species and 4 varieties treated in Sargent's Silva 



