CRATAEGUS IN MISSOURI. 109 



8. Crataegus dumetosa, n. sp. 



Leaves ovate to oval, acute or acuminate, gradually narrowed and 



rounded or abruptly cuneate at the entire base, coarsely often doubly 

 serrate above, with straight glandular teeth, and slightly divided usually 

 only above the middle into 3 or 4 pairs of acute lobes; nearly half-grown 

 when the flowers open about the middle of April and then thin, yellow- 

 green and roughened above by short white hairs and hoary tomentose 

 below especially on the midribs and veins, and at maturity thin, yellow- 

 green, smooth and lustrous on the upper surface, pale yellow-green and 

 villose on the lower surface especially on the stout midribs, and slender 



5-6 



petioles 



becoming pubescent, 1-2.5 cm. in length; leaves on vigorous shoots more 



6^7 



with narrow lunate finely glandular-serrate persistent stipules. Flowers 

 2-2.2 cm. in diameter, on stout hoary-tomentose pedicels, in compact 

 mostly 10-15-flowercd corymbs, with linear falcate acuminate villose 

 glandular often persistent bracts and bractlets, the long lower peduncles 

 from the axils of upper leaves; calyx-tube narrowly obconic, thickly 

 coated with long matted white hairs, the lobes short, slender, acuminate, 



pubescent 



the inner surface, 



reflexed after anthesis; stamens 20; anthers pale yellow; styles 5, sur- 

 rounded at the base by a narrow ring of pale tomcntum. Fruit ripening 

 early in August^ on short stout slightly hairy spreading pedicels, in few- 

 fruited clusters, obovate, gradually narrowed and rounded at the 

 apex, rather abruptly narrowed and rounded at the base, scarlet, 

 lustrous, slightly pubescent at the ends, marked by small dark dots, 

 1,2-1.3 cm. long and 1 cm. in diameter; calyx prominent, with 

 a short tube, a wide deep cavity, and spreading and appressed lobes 

 only slightly hairy on the upper side; flesh thin, yellow, dry and 

 hard; nutlets 5, thin, acute at the ends, rounded or sometimes 

 sUghtly grooved on the back, 6.5-7 mm. long, and about 5 mm. 



wide 



m. high, with numerous small stems covered 

 itiv scalv bark, slender ascending branches, 



and 



hoary 



marked 



and dull 



with few slender nearly straight purple ultimately gray spines 



2-3 cm. long. 



Thickets in fertile uplands. Neck City, Jasper County, 

 E. /. Palmer, (No. 2 type) August 8, 1902, April 15, 1903, 

 March 31 and October 4, 1907. 



