1910.] NATURAL SCIENCES OF PHILADELPHIA. 179 



B. H. Smith and C. 8. Sargent, (No. 60 type) October 7, 1906, 0. E. 

 Jennings, May 27, 1907, 0. E. and Grace K. Jennings, October 7, 1907. 



16. Crataegus divisifolia n. sp. 



Glabrous with the exception of the hairs on the lower surface of 

 the young leaves. Leaves oblong-ovate, acuminate, abruptly 

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

 glandular teeth, and divided often to the middle into 4 or 5 

 pairs of narrow acuminate spreading lobes; when they unfold 

 sparingly villose on the midribs and veins below, soon becoming- 

 glabrous, less than half-grown when the flowers open about the 

 middle of May and then thin, dark yellow-green above and paler 

 below, and at maturity thin, firm, dark green and rather lustrous on 

 the upper surface, pale on the lower surface, 5-6 cm. long and 4-5 cm. 

 wide, with slender midribs and thin primary veins arching obliquely 

 to the points of the lobes ; petioles slender, glandular, with minute 

 occasional persistent glands, 2-2.5 cm. in length; leaves on vigorous 

 shoots thicker, broadly ovate, truncate or rounded at the wide base, 

 coarsely serrate, more deeply lobed and often 7-8 cm. long and wide, 

 with thick midribs and stout glabrous petioles. Flowers 1.6-2 cm. 

 in diameter, on long slender pedicels, in small narrow 2-7-flowered 

 corymbs, the lower peduncles from the axils of upper leaves; calyx- 

 tube narrowly obconic, the lobes short, nearly triangular, entire or 

 minutely glandular-dentate near the apex, reflexed after anthesis ; 

 stamens 9 or 10; anthers pale pink; styles 2-5, usually 4. Fruit 

 ripening early in October, on slender drooping pedicels, depressed 

 subglobose but rather broader than high, angled, often mammallate 

 round the middle, slightly tapering to the base, dull red or occasionally 

 blotched with green or russet green, sparingly punctate, pruinose, 

 1.4-1.7 cm. broad, 1.2-1.5 cm. high; calyx prominent, without a tube, 

 with a wide shallow cup-shaped cavity tomentose in the bottom, and 

 spreading or usually incurved often deciduous lobes; flesh thin, green, 

 dry and hard; nutlets usually 4, narrowed and rounded at the ends, 

 rather broader at the base than at the apex, rounded and only slightly 

 grooved on the back, 7-8 mm. long and 5-5.5 mm. wide. 



An arborescent shrub sometimes 2.5 m. high, with stems covered 

 with dark gray bark, numerous flexuose ascending branches forming a 

 round broadly obconic head, and stout nearly straight branchlets 

 dark orange green and marked by pale lenticels when they first appear, 

 becoming light chestnut brown and very lustrous in their first season 

 and dull reddish brown the following year, and armed with numerous 



