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1903] CRATAEGUS IN NORTHEASTERN ILLINOIS 403 



ber 1899, Barrington village. May, June and September 1 899, and May and 

 October 1901, E, /. HilL 



Anthers light yellow. 



Crataegus corporea, n. sp. — Leaves rhombic, acute at the 

 apex, concave-cuneate at the entire base, finely serrate above, 

 with straight gland-tipped teeth and usually slightly divided 

 above the middle into several short broad acute lobes, about 

 half-grown when the flowers open and then membranaceous, dark 

 yellow-green and sparingly villose above, pale and glabrous 



, below; at maturity subcoriaceous, glabrous, smooth and dark 



bluish green oil the upper surface, light yellow-green on the 



j lower surface, S-/'^"' long, 4.5-6''"' wide, with stout yellow mid- 



ribs deeply impressed on the upper side and five or six pairs of 

 prominent primary veins ; petioles stout, wing-margined toward 

 the apex, deeply grooved, slightly villose on the upper side 

 early in the season, soon glabrous, I-1.8™ in length. Flowers 

 1.5 "^"^ in diameter on long slender pedicels, in broad many- 

 flowered thin-branched slighly villose compound corymbs ; bracts 

 and bractlets linear, acuminate, glandular, mostly deciduous 

 before the flowers open ; calyx tube broadly obconic, glabrous, 

 the lobes wide, acuminate, coarsely glandular-serrate, with small 

 stipitate bright red glands, glabrous on the outer, villose on the 

 inner face, reflexed after anthesis ; stamens 5-10; anthers pale 

 yellow, surrounded at the base bv small tufts of pale hairs. 



I 



Fruit on stout dark red glabrous pedicels in many-fruited droop- 

 insr clusters, subglobose, dark reddish purple, lustrous, marked 

 by occasional pale dots, becoming very soft and succulent when 

 fully ripe, and 1.5-2'=™ in diameter; calyx prominent, with a 

 broad deep cavity and spreading and closely appressed lobes 

 villose and dark red on the upper side, often deciduous from the 

 ripe fruit; flesh thick, yellow, sweet and juicy; nutlets 2 or 3, 

 full and rounded at the ends, about 7""^ long and 6'"" wide, 

 ridged on the rounded back, with a low wide ridge, the ventral 

 cavities short and deep. 



A shrub with slender stems 1-2"' in height, spreading into small thickets, 



rown 



pale lenticels when they first appear, light red-brown and very lustrous at 



