1910.] NATURAL SCIENCES OF PHILADELPHIA. 171 



in the bottom, and small spreading and reflexed lobes; flesh thick, 

 succulent, light yellow tinged with pink, acid; nutlets 3-5, usually 4, 

 narrowed and rounded at the apex, acute at the base, irregularly 

 ridged on the back, with a high narrow grooved ridge, 7-7.5 mm. long, 

 and 4-4.5 mm. wide. 



A shrub 4-5 m. high, with stems covered with dark gray bark 

 separating into small closely appressed scales, and stout nearly straight 

 branchlets light orange-green and marked by pale lenticels when 

 they first appear, becoming light chestnut-brown and lustrous in 

 their first season and dark red-brown the following year, and armed 

 with numerous slender straight or slightly curved dark chestnut- 

 brown shining spines 3.5-4.5 cm. long. 



Riverview Park, Allegheny County, 0. E. Jennings and Grace E. 

 Kinzer, (No. 28 type) October 2, 1905, O. E. Jennings, May 27, 1906, 

 October 12, 1907. 

 ~. Crataegus bellatula n. sp. 



Glabrous with the exception of occasional hairs on the upper surface 

 of the midribs of young leaves. Leaves ovate, acuminate, abruptly 

 cuneate or rounded at the entire base, finely often doubly serrate 

 above, with straight glandular teeth, and slightly divided usually only 

 above the middle into 4 or 5 pail's of small acuminate lobes; more 

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

 then very thin, yellow-green above and bluish below, and at maturity 

 thin, smooth and yellow-green on the upper surface, paler on the lower 

 surface, 3.5-4.5 cm. long and 2.5-3 cm. wide, with slender midribs 

 and primary veins; petioles slender, slightly wing-margined at the 

 apex, glandular, with occasional minute persistent glands, 1.5-2.5 cm. 

 in length ; leaves on vigorous shoots ovate, rounded, truncate or occa- 

 sionally cordate at the broad base, coarsely serrate, deeply lobed and 

 often 6-7 cm. long and 5-5.6 cm. wide, with stout broad-winged 

 conspicuously glandular petioles. Flowers 2 cm. in diameter, on long 

 slender pedicels, in 4-6-flowered corymbs, the lower peduncles from 

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

 acuminate, slightly and irregularly glandular-serrate below the middle, 

 reflexed after anthesis; stamens 20; anthers rose color; styles 4 or 5. 

 Fruit ripening in October, on elongated slender pedicels, in few-fruited 

 clusters, short-oblong, full and rounded at the ends, green (on Septem- 

 ber 6th), about 1 cm. in diameter; calyx prominent, with a short tube, 

 a deep narrow cavity, and spreading persistent lobes; flesh thin, green, 

 dry and mealy ; nutlets 5, rounded at the ends, ridged on the back, with 

 a low broad grooved ridge, 5-5.6 mm. long and 4.5-5 mm. wide. 



