612 PROCEEDINGS OF THE ACADEMY OF [Sept., 



Bucks county: Meadow at Hilltop, near Sellersville, Fretz and Sar- 

 gent (No. 163, type!), September, 1902; C. D. Fretz, May and Septem- 

 ber, 1903. 



This species is named in memory of Zacchaeus Collins (1764-1831), 

 the distinguished Philadelphia botanist, who was one of the early col- 

 lectors of plants in Bucks county. 



5. Cratsgus pumila n. sp. 



Leaves ovate, acuminate, rounded or cuneate at the usually unsym- 

 metrical base, finely serrate, with slender glandular teeth, and deeply 

 divided into numerous narrow spreading lateral lobes, about half-grown 

 when the flowers open the 20th of May and then light yellow-green and 

 covered above with short white hairs and pale and glabrous below, and 

 at maturity membranaceous, glabrous, bluish-green on the upper and 

 glaucous on the lower surface, 4.5-6 cm. long and 3.5-5 cm. wide, with 

 slender midribs, and thin primary veins arching obliquely to the points 

 of the lobes; pedicels slender, grooved on the upper side, sparingly 

 glandular, with mostly deciduous glands, 2.5-3 cm. in length. Flowers 

 1.2-1.4 cm. in diameter, on short glabrous pedicels, in very compact 

 8-12-flowered compound corymbs, with linear glandular caducous 

 bracts and bractlets; calyx-tube narrowly obconic, the lobes slender, 

 acuminate, tipped with dark red glands, entire or occasionally with 

 one or two teeth near the middle, reflexed after anthesis ; stamens 6-10 ; 

 anthers deep red ; styles 3-5, surrounded at the base by a narrow ring 

 of hoary tomentum. Fruit ripening toward the end of September, in 

 few-fruited clusters, oblong, rounded at the ends, dark red and lustrous, 

 1.2-1.8 cm. in length, 8-10 mm. in diameter; calyx little enlarged, with 

 a broad shallow cavity, and spreading lobes mostly deciduous from the 

 ripe fruit; flesh thick, yellow, very soft and pulpy; nutlets 3-5, nar- 

 rowed at the ends, rounded at the base, acute at the apex, slightly 

 ridged on the back, 1.6-1.7 cm. long and 4-5 cm. wide. 



A shrub 1-2 m. high, with numerous erect stems, and slender slightly 

 zigzag branchlets marked by small oblong pale lenticels, bright chest- 

 nut-brown and lustrous when they first appear, becoming dull reddish- 

 brown the following year, and armed with numerous stout straight 

 bright red-brown shining spines about 3 cm. in length. 



Bucks county : Hillsides, in thickets near Sellersville, C. D. Fretz (No. 

 139, type!). May, 1901, May and September, 1903. 



6. Crataegus firma n. sp. 



Leaves oblong-ovatp, acuminate, rounded or cuneate at the gradually 

 narrowed entire base, coarsely doubly serrate above, with straight 

 glandular teeth, and usually slightly divided above the middle into 2 or 



