592 PROCEEDINGS OF THE ACADEMY OF [Sept., 



long and 3-5 cm. wide, their petioles grooved, at first very slender and 

 villose, becoming stouter and glabrous, glandular, with minute scattered 

 deciduous glands, 1.5-2 cm. long; leaves on vigorous shoots more 

 broadly ovate, truncate, slightly cordate or sometimes cuneate at the 

 base, more coarsely serrate and more deeply lobed, and often 7-9 cm. 

 long and wide, with stout broadly winged petioles, and foliaceous lunate 

 coarsely glandular-serrate persistent stipules. Flowers about 1.5 cm. 

 in diameter, on slender villose pedicels, in compact mostly 5-7-flow- 

 ered villose corymbs, with oblanceolate glandular caducous bracts and 

 bractlets; calyx-tube narrowly obconic, the lobes narrow, acuminate, 

 glabrous, entire or sparingly glandular-serrate; stamens 20; anthers 

 small, pale rose color; styles 3 to 5. Fruit on stout glabrous pedicels, 

 in erect clusters, bright apple-green, and lustrous until October, later 

 turning red, 1 cm. in diameter and rather broader than high, and retuse 

 at the insertion of the pedicels; calyx prominent with a deep narrow 

 cavity, and spreading closely appressed lobes dark red on the upper side 

 below the middle; nutlets 3 to 5, usually 4, rounded at the gradually 

 narrowed ends, irregularly and often only slightly ridged on the 

 rounded back, 6-7 mm. long, and 5 mm. wide. 



An arborescent shrub sometimes 5 meters high, with dark gray stems, 

 and stout nearly straight branchlets marked by numerous small pale 

 lenticels, light olive-green when they first appear, becoming dark red- 

 brown tinged with red the following year, and armed with numerous 

 stout or slender nearly straight purple spines 4-5 cm. in length. 



Bucks county: Limestone bluffs, Durham, C. D. Fretz (No. 150, 

 type! and 149), May, September and October, 1901; Fretz and 

 Sargent, September, 1902. 



No. 149 differs from the type in the rather smaller fruit and narrower 

 leaves. 



This species is named for the late Harvey F. Ruth, of Durham, an 

 excellent botanist familiar with the plants of Durham and its vicinity. 

 9. Crataegus comata n. sp. 



Leaves oblong-ovate to rhombic or broadly ovate on leading shoots, 

 acuminate, rounded or broadly or acutely concave-cuneate at the entire 

 base, sharply doubly serrate above, with straight glandular teeth, and 

 divided into 3 or 4 pairs of short acuminate spreading lobes, when the 

 flowers open about the first of May membranaceous, yellow-green, 

 sparingly villose above and on the midribs below, 5-6 cm. long and 

 3-4 cm. wide; petioles slender, slightly wing-margined at the apex, 

 villose, with long matted hairs, glandular, with occasional minute 

 stipitate glands and 1.5-2.5 cm. in length; mature leaves not seen. 



