1905.] NATURAL SCIENCES OF PHILADELPHIA. 623 



stems covered with ashy-gray bark, and thick shghtly zigzag branchlets 

 marked by oblong pale lenticels, dark orange-green when they first 

 appear, light orange or reddish-brown and lustrous during their first 

 winter, light gray-brown the following year, and armed with numerous 

 stout curved or rarely straight red-brown shining spines 3.5-5 cm. in 

 length. 



Delaware county: CoUen Brook, Upper Darby, Smith and Sargent 

 (No. 216, type!), September, 1902; B. H. Smith, May and September, 

 1903, May, 1904; Lownes' Run, Springfield, B. H. Smith (No. 203), 

 May and June, 1902, May, 1904; Collen Brook, Upper Darby, B. H. 

 Smith (No. 240), May, 1904. 



16. Crataegus stolonifera Sargent. 



Bot. Gazette, XXXV, 109 (The Genus Crataegus in New Castle County, 

 Delaware) (1903). 



Leaves ovate-oblong, acuminate, rounded, truncate or sometimes 

 especially on leading shoots cordate at the broad base, more or less 

 deeply divided into 4 or 5 pairs of acute or acuminate lobes, coarsely 

 and often doubly serrate, with straight or incurved glandular teeth, 

 as they unfold suffused with red and villose above, with long pale cadu- 

 cous hairs, and at maturity thin but firm in texture, glabrous, dark 

 yellow-green on the upper, pale on the lower surface, 4.5-6 cm. long, 

 3-4 cm. wide, with slender midribs slightly impressed above, 4 or 5 pairs 

 of remote primary veins extending to the points of the lobes, and very 

 indistinct veinlets; petioles slender, slightly grooved, at first glandular, 

 with numerous small dark deciduous glands, often red below the 

 middle, 1.5-2 cm. long; stipules linear, acuminate, finely serrate, bright 

 red, caducous. Flowers appearing from the 10th to the middle of May, 

 1.5 cm. in diameter, in compact mostly 5-10-flowered thin-l^ranched 

 glabrous corymbs, with oblong-obovate to linear, acuminate, finely 

 glandular-serrate, bright red, caducous bracts and bractlets ; calyx-tube 

 narrowly obconic, the lobes acuminate, entire or slightly serrate toward 

 the apex, often red toward the base, reflexed after anthesis; stamens 

 5-7; anthers small, dark red tinged with purple; styles 3 or 4, sur- 

 rounded at the base by a narrow ring of pale tomentum. Fruit ripen- 

 ing early in September and soon falling, in few-fruited drooping clusters, 

 usually on short pedicels, subglobose to short-oblong, scarlet, lustrous, 

 1.2-1.3 cm. long; calyx-cavity broad and shallow, the lobes gradually 

 narrowed from broad bases, acuminate, mostly entire or sparingly 

 serrate, red on the upper side toward the base, closely appressed ; flesh 

 yellow, thick and succulent; nutlets 3 or 4, thick, narrow and acute at 



