﻿104 BOTANICAL GAZETTE [February 



yellow-green, dry and mealy; nutlets usually 3, broad, obtuse at 

 the ends, rounded and prominently ridged on the back, with 

 a wide rounded ridge, 8-9 "^"^ long. 



A thin-stemmed shrub usually 1-2™ high, rarely taller and almost arbor- 

 escent in habit, with slender spreading branchlets yellow-green tinged with 

 red when they first appear, bright red-brown or purple-brown and marked 

 by few large pale lenticels during their first season, becoming dark gray- 

 brown or reddish-brown the following year, and armed with numerous very 

 slender bright chestnut-brown spines mostly 4-6'='" long. Flowers the middle 

 of May. Fruit ripens about the loth of October, 



Wilmington, May 13, 1899; banks of Brandywine creek above Thomp- 

 son's Bridge, May 16, and September 23, 1899; north side of Bancroft's Dam, 



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near Wilmington, and Rockford Park, Wilmington, October 9, 1899; banks 

 of Brandywine creek, near Wilmington, May 16, 1900, W. M. Canby, 



Very closely related to Crataegus intricata Lange, a common New Eng- 

 land species, this Delaware thorn can be separated from it by the shape of 

 the deeply lobed leaves of vigorous shoots, by the somewhat smaller size, 

 and the color of the fruit, by the elongated tube of the mature calyx, by the 

 more tree-like habit of some individuals, and by its more numerous and. more 

 slender spines, 



Crataegus nemoralis, n. sp. — Leaves ovate to oval, acute, 



gradually or abruptly narrowed, slightly divided above the middle 

 into acute lobes coarsely and except toward the base mostly 

 doubly serrate with incurved glandular teeth, tinged with red 

 when they unfold, and covered with long pale caducous hairs 

 on the upper surface, and pale blue-green and sparingly vil- 



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lose on the lower surface, glabrous when the flowers open ; at 

 maturity thick and firm, dark green above, paler below, 4-5 """^ long, 

 3_4cni ^idej Qj^ leading shoots broader, full and rounded at the 

 base, and often deeply lobed; petioles slender, slightly grooved, at 

 first villose-pubescent, soon glabrous, glandular with small scat- 

 tered dark persistent glands, 1.5-2*="* long; stipules linear, lobed 

 at the base, villose, coarsely glandular-serrate, early decid- 

 uous. Flowers 1.4*="' in diameter, on slender pedicels in compact 

 few-flowered thin-branched glabrous compound corymbs ; bracts 

 and bractlets oblanceolate to linear, acuminate, closely glandu- 

 lar-serrate, like the inner bud-scales, often becoming bright red 

 before falling; calyx-tube broadly obconic, glabrous, the lobes 

 broad, acute or acuminate, laciniately glandular-serrate, reflexed 



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