1910.] NATUKAL SCIENCES OF PHILADELPHIA. 243 



spicuous, sometimes persistent until the petals fall; leaves on vigorous 

 shoots usually rounded at the broad base, more coarsely serrate and 

 more deeply lobed, and often 7-8 cm. long and 6-6.5 cm. wide, with 

 lunate foliaceous coarsely glandular stipules. Flowers on short 

 stout densely villose pedicels, in small compact mostly 3-5-flowered 

 corymbs, with narrow oblong-obovate conspicuously glandular bracts 

 and bractlets fading brown and persistent until the petals fall; calyx- 

 tube narrowly obconic, densely coated with long matted pale hairs, 

 the lobes short, broad, acuminate, coarsely glandular-serrate above 

 the middle, glabrous on the outer surface, villose on the inner surface, 

 reflexed after anthesis; stamens 5-10; anthers pale pink; styles 

 3 or 4. Fruit ripening early in October, on short slender pedicels, 

 in few-fruited clusters, subglobose to short-oblong, green, about 

 1.2 cm. in diameter; flesh thin, green and hard; nutlets 3 or 4, 

 broad and rounded at the apex, gradually narrowed and rounded at 

 the base, slightly ridged on the back, with a low narrow ridge, 6-7 

 mm. long and 4-4.5 mm. wide. 



A shrub 1-2 m. high, with ''small erect stems and branches, slender 

 branchlets, dark orange-green tinged with red and marked by 

 pale lenticels when they first appear, light chestnut brown and lus- 

 trous in their first season and dull red-brown the following year, 

 and armed with very numerous slender straight or slightly curved 

 chestnut brown shining spines 2.5-3 cm. long. 



Rocky knoll, Orbisonia, Huntingdon County, B. H. Smith, (No. 313 

 type) May 20, 1906, October 8, 1908, (No. 306) B. H. Smith, May 19, 

 1906, B. H. Smith and C. S. Sargent, May 27, 1908. 

 16. Crataegus gratiosa n. sp. 



Glabrous with the exception of the hairs on the upper surface 

 of the leaves. Leaves ovate to oval, acute and often short-pointed 

 at the apex, cuneate at the base, coarsely often doubly serrate, with 

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

 short broad lateral lobes; when they unfold slightly tinged with red 

 and coated above with short white hairs, nearly fully grown when the 

 flowers open at the end of May and then thin, yellow-green and still 

 hairy above, and at maturity thick, yellow-green and scabrate on the 

 upper surface, paler and lustrous on the lower surface, 3.5-4.5 cm. 

 long and 2-3.5 cm. wide, with thin midribs and primary veins; petioles 

 slender, slightly wing-margined to below the middle, glandular, 

 1-2 cm. in length ; leaves on vigorous shoots broadly ovate, rounded 

 or very abruptly cuneate at the wide base, more coarsely serrate, 

 and often deeply lobed, with narrow acuminate lobes, their petioles 



