1905.] NATURAL SCIENCES OF PHILADELPHIA. 647 



11. Crataegus definita n. sp. 



Leaves ovate to oval, acute, full and rounded at the wide often un- 

 symmetrical base, finely doubly serrate above, with straight glandular 

 teeth, and irregularly divided into 2 or 3 pairs of short broad acute 

 lobes, fully grown when the flowers open at the end of May and then 

 membrariaceous, glabrous with the exception of a few hairs on the upper 

 side of the midribs, very smooth and light yellow-green above and pale 

 below, and at maturity thin but firm in texture, yellow-green, 4-5 cm. 

 long and wide, with slender yellow midribs and thin veins arching 

 obliquely to the points of the lobes; petioles stout, wing-margined 

 toward the apex, puberulous on the upper side while young, becoming 

 glabrous, glandular, with minute glands, 1-2 cm. in length. Flowers 

 about 2 cm. in diameter, on slender elongated glabrous pedicels, in 5- or 

 6-flowered compact corymbs, with large conspicuous lanceolate coarsely 

 glandular-serrate viscid reddish bracts and bractlets persistent until 

 after the flowers have opened; calyx-tube narrowly obconic, glabrous, 

 the lobes broadly foliaceous, coarsely laciniately serrate at the acumi- 

 nate apex, reflexed after anthesis; stamens 6-8; anthers pale pink; 

 styles 3 or 4, surrounded at the base by a narrow margin of pale hairs. 

 Fruit subglobose to short-oblong, somewhat narrowed at the base, full 

 and rounded at the apex, green or greenish-yellow, about 1 cm. in 

 diameter; flesh thick, green, dry and mealy; nutlets 3 or 4, rounded 

 and obtuse at the ends, slightly ridged on the broad rounded back, with 

 a narrow ridge, about 8 mm. long and 4 mm. wide. 



A shrub about 2 m. high, with slender branchlets marked by oblong 

 pale lenticels, dark orange color when they first appear, dark red-brown 

 during their first year, becoming dark gray tinged with red, and armed 

 wdth slender straight dark purplish spines 5-6 cm. in length. 



Delaware county: Preston Run Barrens, Newtown, B. H. Smith 

 (No. 198, type!). May and September, 1901. Rare. 



This species, which is still imperfectly known, resembles in general 

 appearance Cratcegus peckii Sarg. of the Hudson River Valley, but 

 differs from that species in the absence of hairs on the lower side of the 

 shorter and comparatively broader leaves, by the more slender entirely 

 glabrous pedicels, and in the smaller number of stamens. 



12. Crataegus painteriana n. sp. 



Leaves oval to obovate or rhombic, acute, gradually narrowed and 

 concave-cuneate at the entire or glandular base, finely doubly serrate 

 above, with straight glandular teeth and deeply divided above the 

 middle into 3 or 4 pairs of narrow acuminate lobes, slightly tinged with 

 red and glabrous with the exception of a few soft hairs on the upper 



