54 



BILTMORE BOTANICAL STUDIES 



is common in the flat woods and valley of Horse-leg creek, extending westward 

 across the state of Alabama to eastern Mississippi, and is likely to exist in por- 

 tions of middle and eastern Tennessee. Evidently a connecting link between 

 C. silvicola Beadle I.e. and the punctata. Often grows side by side with C, 

 collina Chapm. 6 and the segregate immediately following, but, like C. silvicola, 

 is much earlier to blossom. 



The type specimens, consisting of flowers (B4148) and fruit (B4148 2 ) from the 

 same tree, are preserved in the Biltmore Herbarium. 



PUNCTATA 



Fruit large, at maturity more than i cm thick 



Anthers pink : fruit i8-25 mm wide C. punctata Jacq. 7 



Anthers yellow or almost white : fruit n-i5 mm wide 



Petioles and leaf -bases glandless or nearly so . . . C. collina Chapm. 1. c. 

 Petioles and leaf-bases conspicuously glandular . C. rige?is 

 Fruit not exceeding i cm in diameter 

 Inflorescence pubescent 



Anthers white or light yellow : leaves sharply ser- 

 rate and very incisely lobed C. amnicola 



Anthers pink or purple : leaves serrate and shal- 



lowly incised C. ingens 



Inflorescence glabrous, or with a few weak hairs 



Leaf-borders sharply serrate and shallowly incised . C. penita 

 Leaf-borders coarsely serrate and deeply incised . C. margaretta Ashe 8 



Crataegus rigens n. sp. 



A small tree 4-6™ tall with a trunk sometimes 2 dm in diameter, 

 clothed with dark gray, fissured and scaly bark, or more fre- 

 quently a large, much-branched shrub with one or several stems : 

 spines stout, i.$-\ cm long, or often larger and compound, chest- 

 nut-brown or gray : leaves obovate, broadly oval or occasionally 

 nearly round, the blades 2-5 cm long, 1.5-4°™ wide, mostly pointed 

 at the apex, contracted or narrowed at the base into margined, 

 glandular petioles 5 mm -2 cm long, the borders sharply and irregu- 

 larly serrate and occasionally shallowly incised, especially on 

 leading shoots ; they are pubescent on both surfaces at the time 

 of unfolding, and particularly on the lower surface along the mid- 

 rib and the 3-5 pairs of ascending, straight veins, either glabrous 

 or glabrate when fully grown, bright green on the upper surface, 

 paler beneath, coriaceous or subcoriaceous in texture, fading in 



6 Flora S. U. S. ed. 2, second suppl. 684, 1892. 



7 Hort. Vind. 1: 10, 1770. t 

 s Jour. E. Mitchell Soc. i6 2 172, 1900. 



