178 PROCEEDINGS OF THE ACADEMY OF [March, 



C. S. Sargent, (No. 320 type) October 9, 1906, May 27, 1908, B. H. 

 Smith, October 8, 1907. 



The flowers of this species have not been collected. 



15. Crataegus erubescens n. sp. 



Glabrous. Leaves ovate, acuminate, concave-cuneate or rarely 

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

 glandular teeth, and slightly divided into 4 or 5 pairs of small acumi- 

 nate lateral lobes; not more than one-third grown when the flowers 

 open late in May and then very thin and light yellow-green, and at 

 maturity thin but firm in texture, dark dull bluish green and smooth 

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

 4-4.5 cm. wide, with prominent midribs and thin primary veins; 

 petioles stout, glandular, with occasional minute persistent glands, 

 2-2.5 cm. in length ; leaves on vigorous shoots thicker, gradually nar- 

 rowed and rounded at the broad base, more coarsely serrate and more 

 deeply lobed, and often 6-7 cm. long and 5-6 cm. wide. Flowers 

 1.5 cm. in diameter, on short slender pedicels, in small compact mostly 

 5-7-flowered corymbs, the lower peduncles from the axils of upper 

 leaves; calyx-tube narrowly obconic, the lobes gradually narrowed 

 from broad bases, short, slender, acuminate, entire or minutely dentate 

 near the middle; reflexed after anthesis; petals crenulate; stamens 

 7-10, generally 10; anthers pale rose-pink; styles 3 or 4. Fruit ripen- 

 ing early in October, on long slender drooping pedicels, in usually 

 1-3-fruited clusters, subglobose but often broader than high, flattened 

 at the ends, pentagonal, purple-red, marked by large pale dots, pruinose, 

 becoming lustrous, 1-1.1 cm. long and 1.2-1.5 cm. wide; calyx little 

 enlarged, without a tube, with a narrow deep cavity pointed in the 

 bottom, and small spreading incurved persistent lobes; flesh thin, 

 hard, dry, light yellow-green, acidulous; nutlets 3-5, broad and 

 rounded at the apex, narrowed at the rounded base, ridged on the back, 

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



An arborescent shrub 3-4 m. high, with stems sometimes 1.5 cm. 

 in diameter, covered with dark gray bark broken into small closely 

 appressed scales, spreading branches forming a flat-topped head, and 

 stout nearly straight branchlets deeply tinged with red when they 

 first appear, becoming light chestnut brown very lustrous and marked 

 by dark lenticels in their first season, and dull red-brown the follow- 

 ing year, and armed with numerous slender nearly straight purple 

 shining spines 3.5-5.5 cm. long. 



Hillsides, in rich soil, Kittanning, Armstrong County, O. E. Jennings, 



