174 PROCEEDINGS OF THE ACADEMY OF [March, 



Grace K. Jennings, (No. 3 type) May 23 and October 18, 1907, 0. E. 

 Jennings, October 3, 1908, May 24 and September 13, 1909. 



10. Crataegus leiophylla Sargent. 



Proc. Rochester Acad. Sci., IV, 99 (1903) ; Bull. CXXII, N. Y. State Mus., 41. 



Valley of the Little Juniata River below Altoona, Blair County, 

 B. H. Smith, (No. 269) May 20 and September 25, 1905; also in western 

 New York. 



11. Crataegus dunmorensis n. sp. 



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

 on the calyx-lobes. Leaves broadly ovate, acuminate, rounded, 

 truncate or abruptly cuneate at the base, sharply often doubly serrate, 

 with straight glandular teeth, and deeply divided into 3 or 4 pairs of 

 wide acuminate lateral lobes; nearly half-grown when the flowers 

 open in the last week of May and then light yellow-green and roughened 

 above by short white hairs and pale and glabrous below, and at matur- 

 ity thin, bluish green, smooth and lustrous on the upper surface, paler 

 on the lower surface, 3-4.5 cm. long and 3-4 cm. wide, with slender 

 midribs and primary veins; petioles slender, glandular, with minute 

 often persistent glands, 1.2-1.5 cm. in length ; leaves on vigorous shoots 

 truncate or rounded at the base, more coarsely serrate and more deeply 

 lobed and often 6-7 cm. long and broad. Flowers 2.2 cm. in diameter, 

 on short slender pedicels, in compact mostly 5- flowered corymbs, with 

 linear-obovate to linear glandular green bracts and bractlets often 

 persistent until the flowers open; calyx-tube broadly obconic, the 

 lobes separated by wide sinuses, short, narrow, acuminate, entire or 

 minutely glandular-serrate near the middle, glabrous on the outer, 

 very sparingly hairy on the inner surface, reflexed after anthesis; 

 stamens 15-20; anthers pale pink or nearly white; styles 3-5. Fruit 

 ripening in October, on slender drooping pedicels, in few-fruited 

 clusters, obovate, rather broader than high, green until fully grown, 

 becoming dull red, pruinose, 1.2-1.3 cm. in diameter and 1-1.2 cm. 

 long; calyx prominent, with a short tube, a wide deep cavity, and 

 small spreading and reflexed persistent lobes dark red on the upper 

 side below the middle; flesh thin, green, dry and hard, slightly bitter; 

 nutlets 4 or 5, narrowed and rounded at the apex, acute at the base, 

 rounded and grooved or slightly ridged on the back, 6.5-7 mm. long 

 and 3.5-4 mm. wide. 



A shrub 2-3 m. high, with numerous slender stems covered with 

 smooth pale bark, spreading branches, and very slender nearly straight 

 branchlets dark olive-green when they first appear, becoming dull 



