214 PROCEEDINGS OF THE ACADEMY OF [March, 



the apex, broader and rounded at the base, ridged on the back, with 

 a broad low doubly grooved ridge 7-7.5 mm. long 4-4.5 mm. wide, 

 with a prominent hypostyle extending to below the middle of the 

 nutlet. 



A shrub, with slender zigzag branchlets light orange-green and 

 marked by pale lenticels when they first appear, becoming light 

 orange-brown in their first season and darker-colored the following 

 year, and armed with numerous slender slightfy curved light red- 

 brown spines 2-4.5 cm. long. 



Borders of woods near West Leesport, Bucks County, C.L. Gruber, 

 (No. 219 A type) September 29, 1905, May 13 and September 15, 

 1906, October 3, 1909. 

 9. Crataegus propensa n. sp. 



Glabrous with the exception of the hairs on the upper surface 

 of the young loaves and on the calyx-lobes. Leaves oblong-ovate, 

 acuminate, rounded or cuneate at the base, finely often doubly ser- 

 rate, with straight glandular teeth, and divided into 5 or 6 pairs of 

 narrow acuminate lobes usually pointing toward the apex of the leaf; 

 more than half-grown when the flowers open about the 20th of May 

 and then dark yellow-green, lustrous and slightly roughened above 

 by short white hairs and pale bluish green below, and at maturity very 

 thin, yellow-green, smooth, glabrous and lustrous on the upper surface, 

 paler on the lower surface, 5-6 cm. long and 3.5-4 cm. wide, with thin 

 midribs and primary veins; petioles slender, slightly wing-margined 

 at the apex, often rose color in the autumn, 2-2.5 cm. in length. 

 Flowers l.S cm. in diameter, on long slender pedicels, in wide lax 

 mostly 9-12-flowered corymbs, the elongated lower peduncles from the 

 axils of upper leaves ; calyx-tube narrowly obconic, the lobes gradually 

 narrowed from wide bases, long, slender, acuminate, entire, very 

 slightly hairy on the inner surface, reflexed after anthesis; stamens 

 6-10 ; anthers dark rose color; styles 3 or 4. Fruit ripening the middle 

 of September, on elongated pedicels, in few-fruited drooping clusters, 

 short-oblong, full and rounded at the ends, scarlet, lustrous, marked 

 by small pale dots, 1-1.2 cm. long and 8-10 mm. in diameter; calyx 

 little enlarged, with a wide deep cavity pointed in the bottom, and 

 spreading and appressed lobes dark red on the upper side below the 

 middle, their tips often deciduous from the ripe fruit; flesh yellow, 

 thick, soft and succulent; nutlets 3 or 4, rounded at the apex, acute 

 at the base, only slightly ridged and occasionally grooved on the back, 

 about 7 mm. long and 4 mm. wide. 



A shrub 4-5 m. high, with numerous stems sometimes 12-15 cm. 



