﻿1903] CRATAEGUS IN NORTHEASTERN ILLINOIS 3S5 



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base, and 4 or 5 pairs of thin primary veins extending obliquely 

 to the points of the lobes; petioles slender, slightly grooved, 

 densely villose early in the season, 2.5-4^"^ in length; stipules 

 oblong, often falcate, coarsely glandular-serrate, villose, 7-8"'"^ 

 long, usually persistent until the flowers have opened; on vigor- 

 ous shoots leaves often truncate or slightly cordate at the base, 

 deeply lobed with broad nearly triangular lobes, frecjuentlyg-io"^"' 

 long and broad with stout rose-colored glandular petioles and 

 villose lunate glandular-serrate stipules. Flowers 1 .8-2 *""* in 

 diameter on slender densely villose pedicels, in broad many- 

 flowered thin-branched hairy compound corymbs; bracts and 

 bractlets, large, linear to oblong, acuminate, glandular with dark 



red glands, occasionally persistent until midsummer; calyx tube 

 narrowly obconic, thickly covered with long spreading white 

 hairs, the lobes abruptly narrowed at the base, broad, acuminate, 

 coarsely glandular-serrate, glabrous on the outer, villose on the 

 inner face; stamens 20; anthers pink; styles 4 or 5, surrounded 

 at the base by a narrow ring of pale tomentum. Fruit drooping 

 on slender puberulous pedicels, in few-fruited clusters, obovate, 

 full and rounded at the apex, gradually narrowed to the rounded 

 base, crimson, lustrous, marked by small dark dots, 1.4-1.6^"' 

 long, 1-1.2^"^ wide; calyx sessile, with a broad shallow cavity 

 and slightly enlarged closely appressed coarsely serrate lobes 

 often deciduous from the ripe fruit; flesh yellow, thin, acidulous, 

 juicy; nutlets 4 or 5, thin, acute at the ends, irregularly ridged 

 and sometimes grooved on the back, about 9""^ in length. 



A tree 8 or 9^ in height with a straight trunk sometimes 2"^ long and 3^'" 

 in diameter, covered with close, light gray bark tinged with red and divided 

 by shallow fissures into small plates, stout ascending branches forming an 

 open irregular often round-topped head, and slender nearly straight branch- 

 lets, densely villose when they first appear, dark orange color tinged with red, 

 marked by many oblong pale lenticels, and sparingly villose when the flow- 

 ers open, bright red-brown and lustrous at the end of their first season, 

 becoming dark dull reddish-brown the following year, and sparingly armed 

 with slender, nearly straight red-brown shining spines S-S-S^*" l^ng. Flowers 

 the middle of May. Fruit ripens from the middle to the end of September. 



Open woods or near the borders of streams in moist rich soil, Thatcher s 

 Park, September, 1899, May, August and September igco, May and Sep- 

 tember 1901, Glendon Park, October 1900, woods by Desplaines river. River 



