1905.] NATURAL SCIENCES OF PHILADELPHIA. 613 



3 pairs of short acute lobes, when they unfold deeply tinged with red, 

 glabrous below and covered above wdth short shining white hairs, 

 about half-grown when the flowers open from the 15th to the 20th of 

 May and then membranaceous, pale bluish-green and nearly glabrous 

 above with the exception of a few scattered hairs and a slight pubes- 

 cence on the upper side of the midribs, and pale below, and at maturity 

 thick and firm in texture, bluish-green, smooth and glabrous on the 

 upper, light yellow-green on the lower surface, 5.5-6 cm. long and 4—4.5 

 cm. wide, with thick midribs, and usually 5 pairs of slender primary 

 veins; petioles slender, grooved on the upper side, slightly wing-mar- 

 gined at the apex, sparingly glandular, with minute dark red glands, at 

 first slightly pubescent, soon glabrous, 2.5-3 cm. in length; stipules 

 linear to lanceolate, glandular, fading rose color, caducous. Flowers 

 2 cm. in diameter, on long slender glabrous pedicels, in usually 7-10- 

 flowered corymbs, with linear glandular caducous bracts and bractlets; 

 calyx-tube narrowly obconic, the lobes slender, acuminate, entire or 

 occasionally irregularly toothed above the middle, tipped with minute 

 dark glands, reflexed after anthesis; stamens 10; anthers rose color; 

 styles 2-4, surrounded at the base by a narrow ring of pale tomentum. 

 Fruit ripening from the middle to the end of September on drooping 

 pedicels, in few-fruited clusters, short-oblong to obovate, crimson, 

 lustrous, 1.2-1.4 cm. long, 1-1.2 cm. wide; calyx only slightly enlarged, 

 with a wide shallow cavity, and spreading or erect lobes, their tips 

 usually deciduous from the ripe fruit, flesh thick, yellow, rather juicy; 

 nutlets usually 3 or 4, full and rounded at the base, gradually narrowed 

 to the acute or rounded apex, ridged on the back, with a broad high 

 ridge 7-8 mm. long and 4—5 mm. wide. 



A tree sometimes 7 m. high, with a short stem 3.5-3.8 cm. in diameter, 

 dividing near the ground into several stout erect stems, covered with 

 gray-brown scaly bark, and forming a narrow irregular head, and stout 

 nearly straight branchlets marked by few oblong pale lenticels, dark 

 orange color when they first appear, pale orange color to light reddish- 

 brown and very lustrous during their first winter, pale gray-brown the 

 following year, and armed with numerous very stout curved chestnut- 

 brown shining spines 2-3 cm. in length. 



Bucks county: Banks of a stream in the meadow near Pleasant 

 Spring bridge. Hilltop near Sellersville, C. D. Fretz (No. 128, type!), 

 May and September, 1900; Fretz and Sargent, September, 1902. 



7. Crataegus gruberi Ashe. 



Ann. Carnegie Mus., I, 3 (1902). Gruber, Proc. Berks CountA Nat. Sci. 



Club, I, 11 (CrattBgus in Berks County, II). 



Leaves ovate to oval or rhombic, acuminate and often long-pointed 



