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1903] CRATAEGUS IN NORTHEASTERN ILLINOIS 391 



\ ' appressed lobes usually deciduous from the ripe fruit; flesh 



thick, succulent, yellow; nutlets usually 3, broad, acute at the 

 ends, very prominently ridged on the back, with a high rounded 

 ridge, 7 "'^ long. 



A shrub 2-3''' in height, with slender nearly straight branchlcts, light 

 yellow-green and marked by many small pale lenticels when they first appear, 

 light red-brown and lustrous at the end of their first season, lighter-colored 

 the following year and ultimately ashy-gray, and unarmed or armed with 

 rather stout straight or slightly curved red-brown shining spines 1-3^"^ in 

 length; winter-buds globose covered with bright red shming scales, only 

 2 mm j^ diameter. Flowers about the middle of May. Fruit ripens from the 

 2oth of August to the ist of September, and immediately falls and decays. 



Near Lake Zurich, September 1899, May and September I901; Thatch- 

 er's Park, May, August and September 1900, May and August 1901 ; May- 

 wood, August 1900, May and August 1901; Beverly Hills, June and August 

 1 90 1, June 1902; Oak Forest. September 1902, E, /. Hiii. 



Well distinguished from the other species of this group in Illinois by the 

 early ripening fruit which matures and drops a few days before the fruit of 

 Craiaegiis mollis Scheele, ripens in the same region. 



Crataegus paticispina, n. sp. — Leaves oblong-ovate, acumi- 

 nate, rounded, concave-cuneate to truncate or subcordate at the 

 entire base, sharply doubly serrate above, with straight glandular 

 teeth and deeply divided into 4 or 5 pairs of acute lateral lobes 

 spreading or pointing toward the apex of the leaf; about half- 

 grown when the flowers open, and then light yellow-green and 

 slightly roughened above by short white hairs and paler and 

 glabrous below ; at maturity membranaceous, dark blue-green 

 and scabrate on the upper surface, light blue-green on the lower 

 surface, 6-8<^™ long, 4-6'='" wide, with slender yellow midribs 

 and thin primary veins extending obliquely to the points of 

 the lobes; petioles slender, slightly grooved, usu illy destitute 

 of glands, tinged with purple in the autumn, 2-4 '" in length ; 

 stipules linear, acuminate, glandular, with large dark glands, 

 reddish, caducous. Flowers 1.5-1.8'^'° in diameter on slender 

 pedicels covered with broad spreading hairs, in broad 12-20- 

 flowered thin-branched slightly villose compound corymbs; 

 bracts and bractlets linear to oblong-obovate, glandular, red, 

 mostly persistent until after the flowers open; calyx tube 

 narrowly obconic, glabrous, dull green, the lobes narrow, 



