602 PROCEEDINGS OF THE ACADEMY OF [Sept., 



A shrub 3-4 m. high, with slender nearly straight branchlets marked 

 by occasional small pale lenticels, dark orange-green when they first 

 appear, becoming purplish in their first season and dark red-brown the 

 following year, and armed with numerous slender nearly straight purple 

 ultimately gray-brown spines 3.5-5.5 cm. in length. 



Bucks county: Alluvial bottom lands, Deep Run, near Sellersville, 

 C. D. Fretz (No. 125, type!), May and September, 1900, May and Sep- 

 tember, 1903. Rare. 

 19. Crataegus deduota n. sp. 



Leaves oval to ovate, acuminate, concave-cuneate at the entire base, 

 coarsely doubly serrate above with glandular teeth and sharply divided 

 into 3 or 4 pairs of short acute lateral lobes, more than half-grown when 

 the flowers open about the 20th of May and then membranaceous, light 

 yellow-green, smooth and shining above, pale below, and glabrous with 

 the exception of a few caducous hairs on the upper side of the midribs, 

 and at maturity thin but firm in texture, light bluish-green, 6-7 cm. 

 long and 4-4.5 cm. wide, wdth stout yellow midribs and remote primary 

 veins extending obliquely to the points of the lobes ; petioles slender, 

 slightly wing-margined at the apex, puberulous at first, soon glabrous, 

 glandular with conspicuous stipitate dark caducous glands, and 2-2.5 

 cm. in length ; leaves on vigorous shoots mostly ovate, full and rounded 

 at the broad base, deeply lobed with acuminate lobes, and often 6 cm. 

 long and wide. Flowers about 2 cm. in diameter, on slender glabrous 

 pedicels, in compact 5-10-flowered corymbs, with conspicuously gland- 

 ular oblong-obovate to lanceolate bracts and bractlets often persistent 

 until after the flowers open; calyx-tube narrowly obconic, the lobes 

 wide, coarsely glandular-serrate, reflexed after anthesis; stamens 7-9; 

 styles 2-4, surrounded at the base by a few short pale hairs. Fruit 

 ripening about the middle of October, on slender pedicels, in few-fruited 

 clusters, short-oblong to ovate, angled and green when fully grown, 

 becoming distinctly mamillate at the base and dull red when fully ripe, 

 thickly covered with a glarucous" bloom, 1-1.2 cm. long and broad; 

 calyx prominent, without a tube, and with a wide shallow cavity, and 

 spreading reflexed closely appressed lobes often deciduous from the 

 ripe fruit; flesh thin, yellow, dry and mealy; nutlets 3 or 4, gradually 

 narrowed and acute at the ends, prominently ridged on the broad back 

 with a low wide ridge, 8-9 mm. long and 5 mm. wide. 



A shrub 2-3 m. high, with erect stems and slender nearly straight 

 branchlets marked by oblong pale lenticels, light orange-green when 

 they flrst appear, becoming dull reddish-brown during their first winter 

 and gray tinged with red the following season, and armed wdth numer- 



