ROSACEA 



419 



shoots usually ovate and rounded at the broad base, more deeply lobed and some- 

 times 3' long and broad. Flowers |' in diameter, on thin pedicels, in narrow com- 

 pact fewflowered small villose corymbs; calyx broadly obconic, glabrous, the lobes 

 narrow, actiminate, coarsely glandular-serrate, villose on the upper surface ; stamens 

 20; anthers small, dark purple; styles 4 or 5. Fruit ripening about the middle of 

 September and soon falling, on short stout pedicels, in erect few-fruited slightly vil- 

 lose clusters, pear-shaped until nearly fully grown and then short-oblong or somewhat 

 obovate, full and rounded at the ends, crimson, lustrous, marked by small pale dots, 

 ^'-f long; calyx enlarged, the lobes elongated, coarsely glandular-serrate, villose 

 above, closely appressed, often deciduous before the fruit ripens; flesh thick, yellow, 

 dry and mealy; nutlets 4 or 5, thin, rounded, and sometimes obscurely ridged on the 

 back, about \' long. 



A tree, 20-2o high, with a tall straight trunk 6'-8' in diameter, covered with 

 close dark red-brown bark, slender ascending branches forming a narrow open head, 

 and thin branchlets dark green and somewhat villose when they first appear, becom- 

 ing dull orange-brown in their first summer and ultimately dark gray-brown, and 

 armed with straight or slightly curved bright red-brown lustrous spines I'-l^ long. 



Distribution. Rich moist soil along the margins of Oak groves on the banks of 

 sloughs; Barrington, Illinois. 



53. Crataegus depilis, Sarg., n. sp. 



Leaves ovate, acute or acuminate, rounded or broadly cuneate and often unsym- 

 metrical at the entire base, sharply doubly serrate above, with straight glandular 



teeth, and often divided into 4 or 5 pairs of short acute lobes, when they unfold 

 deeply tinged with red and covered above with fine short caducous hairs, nearly 

 half grown when the flowers open during the second week of May, and at maturity 

 membranaceous, glabrous, smooth, yellowish to bluish green on the upper surface, 

 pale on the lower surface, l^'-2' long, I'-l^ wide, and on vigorous shoots often 2i' 

 long and 1^' wide, with slender midribs and 5 or 6 pairs of thin primary veins, turn- 

 ing yellowish and brown or russet color in the autumn; their petioles slender, gla- 

 brous, sparingly glandular, with minute glands, ^'-V long; stipules linear, acuminate, 

 glandular-serrate, reddish, caducous. Flowers |' in diameter, on slender pedicels. 



