﻿19031 THE GENUS CRATAEGUS IN DELAWARE 105 



Wil 



after anthesis; stamens lo; anthers pale yellow; styles 3 or 4, 

 surrounded at the base by a narrow ring of pale tomentum. 

 Fruit erect, in few-fruited clusters, globose to subglobose or 

 slightly obovate, about x""^ in diameter, dark green until late in 

 the season, becoming dark clear red when fully ripe; calyx 

 prominent with a broad deep cavity, a short tube, and spreading 

 mostly persistent acuminate lobes often serrate above the mid- 

 dle; flesh thin, greenish, dry and mealy; nutlets 3 or 4, thick, 

 acute at the ends, prominently ridged on the back, with a broad 

 often deeply grooved ridge, 7-8"'"' long. 



A tree-like shrub with stems sometimes 3-4" in height and stout zigzag 

 branchlets, light olive-green and glabrous when they first appear, dark pur- 

 ple or reddish-brown and marked by numerous small oblong pale lenticels 

 during their first season, and dark gray-brown in their second year and 

 armed with many slender chestnut-brown or purple spines usually pointed 

 toward the base of the branch and 5-6 '^^ long. Flowers the middle of May. 

 Fruit ripens in October and falls before the leaves. 



Common along woody borders, often in rocky soil. Rockford Park, 

 mington, October 1899, May and October 1900 and 1901, IK M, Canby. 



This thorn, which is common in northern Delaware, is closely related to 

 Crataegus Boyntoni Beadle, of the southern Appalachian region, differing from 

 that species only in its smaller flowers on more slender pedicels, in its fewer- 

 flowered corymbs, in its rather thinner leaves, and in the different color and 

 size of the fruit which is inclined to be short-oblong or obovate, 



Crataegus cuprea, n. sp. — Glabrous. Leaves ovate to rhombic, 

 acute or acuminate at the apex, gradually or abruptly narrowed 

 and concave cuneate or full and rounded, or on vigorous shoots 

 sometimes slightly cordate at the entire glandular base, sharply 

 and often doubly serrate above with nearly straight gland-tipped 

 teeth and divided into 2-4 pairs of short acute lateral lobes ; 

 nearly fully grown, membranceous and pale green when the 

 flowers open, at maturity thin but firm in texture, dark yellow- 

 green on the upper surface, pale on the lower surface, 5-7''"' long, 

 3-5-5-5'''^ wide, with prominent midribs and few remote primary 

 veins extending to the points of the lobes; petioles slender, 

 usually wing-margined above, glandular with stipitate dark red 

 glands often deciduous before the autumn, 1.5-2.5^^ long. Flow- 

 ers about 1.2^'^ in diameter, on short often glandular pedicels, in 

 3-S-flowered compact compound thin-branched corymbs; bracts 



