240 PROCEEDINGS OF THE ACADEMY OF [March, 



diameter; calyx prominent, with a short tube, a deep narrow cavity, 

 and small spreading and reflexed lobes ; flesh yellow, succulent, juicy, 

 bitter and acid ; nutlets 2 or 3, rounded at the ends, ridged on the back, 

 with a broad slightly grooved ridge, 6.5-7 mm. long, and 4-4.5 mm. 

 wide. 



A round-headed shrub 2-3 m. high, with stout much-branched 

 stems covered with close light gray bark, and slender nearly straight 

 branchlets, dark orange-green and marked by pale lenticels when they 

 first appear, becoming bright chestnut brown and very lustrous in 

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

 with very numerous slender straight purple shining spines pointing 

 toward the base of the branch. 



Open pastures, Washington County, Charleroi, O. E. Jennings and 

 Grace E. Kinzer, (No. 34 type) October 7, 1905, May 21, 1906, O. E. 

 Jennings, May 21 and October 14, 1907. Hillside above Twilight, 

 O. E. Jennings, (No. 52) May 21, 1906, and half a mile west of Belle 

 Vernon, O. E. Jennings, (No. 53) October 14, 1907, are probably of 

 this species. 

 13. Crataegus luteola n. sp. 



Glabrous with the exception of the hairs on the young leaves and 

 calyx-lobes. Leaves oval to ovate, acute or acuminate, concave- 

 cuneate at the base, coarsely often doubly serrate, with broad glan- 

 dular teeth, and slightly divided above the middle into 2 or 3 pairs of 

 broad acuminate lobes; more than half-grown when the flowers 

 open about the middle of May and then thin, dark yellow-green, 

 very smooth and slightly hairy on the midribs above and pale 

 and glabrous below, and at maturity rather thick, dark yellow-green 

 on the upper surface, light yellow-green on the lower surface, 

 4-5 cm. long and 3-4 cm. wide, with thick midribs, slender 

 primary veins and conspicuous reticulate veinlets; petioles stout, 

 narrowly wing-margined to below the middle, slightly hairy on the 

 upper side while young, soon becoming glabrous, glandular, with 

 minute persistent glands, 8-10 mm. in length; leaves on vigorous 

 shoots ovate, abruptly cuneate at the base, more coarsely serrate and 

 more deeply lobed, and often 6 cm. long and 5 cm. wide, with stouter 

 broadly winged petioles. Flowers 1.8 cm. in diameter, on short 

 slender pedicels, in small compact mostly 5- or 6-flowered corymbs, 

 with large oblong acuminate glandular-serrate bracts and bractlets 

 fading brown and often persistent until the flowers open, the short 

 lower peduncles from the axils of upper leaves ; calyx-tube narrowly 

 obconic, the lobes separated by wide sinuses, short, broad, acuminate, 



