198 JOURNAL OF THE ARNOLD ARBORETUM [vol. hi 



in few -fruited clusters, subglobose to short-oblong, orange-red, 1-1.2 

 cm. in diameter, the calyx little enlarged with a wide deep cavity pointed 

 in the bottom and spreading and appressed lobes; flesh thick, dry and 

 mealy; nutlets usually 3, rounded at the ends, broader at the apex than 

 at the base, rounded and ridged on the back, about 5 mm. long and 3 

 mm. wide, the narrow hypostyle extending nearly to the middle. 



A shrub with stems 3-4 mm. high, and slender nearly straight glabrous 

 unarmed branchlets bright yellow-green early in their first season, be- 

 coming light red-brown and grayish brown in their second year. 



West Virginia. MercerCounty, roadside between Princeton and Mercer 

 Springs, T. G. Harbison, No. 22 (type), May 25 and 26, 1914; No. 40, September 

 28, 1914. 



This species in general appearance looks very distinct from the typical 

 species of this group, but its relationship is suggested by C. dacrioides 

 Sargent from Obisonia, Huntington County, southern Pennsylvania, 

 another extreme form of Rotundifoliae from which it differs in its broader 

 obovate to ovate nearly rhombic leaves destitute of hairs on the upper 

 surface while young and smooth at maturity, smaller flowers on glabrous 

 pedicels, by the subglobose or short-oblong not obovoid fruit and by the 

 absence of thorns. The absence of thorns from the specimens collected 

 by Mr. Harbison is, however, probably not a constant character. 



Crataegus meiophylla (§ Rotundifoliae), n. sp. 



Leaves ovate to slightly obovate, rounded or acute at apex, cuneate 

 at base, divided above the middle into three or four pairs of short broad 

 rounded or acute bluntly toothed lobes, roughened above when they un- 

 fold by short white hairs, and glabrous or furnished below along the midrib 

 and veins with occasional hairs; nearly fully grown when the flowers 

 open, and at maturity thin, glabrous, dark yellow-green above, paler 

 below, 2-2.5 cm. long and 1,5-2 cm. wide, with a thin prominent mid- 

 rib and slender veins running to the points of the lobes; petioles slender, 

 narrow, wing-margined to below the middle, 5-10 mm. in length; leaves 

 at the end of vigorous shoots sometimes broad-elliptic, acute at ends, 

 divided into acute lobes, and 4-5 cm. long and wide; petioles up to 1.5 

 cm. in length. Flowers appearing about May 20, 1.5 cm. in diameter, on 

 slender pedicels in small lax slightly villose mostly 7-10-flowered cormybs; 

 calyx-tube broad-obconic, villose, with occasional white hairs, the lobes 

 separated by wide sinuses gradually narrowed from the base, short, acute 

 entire or slightly or irregularly toothed, glabrous on the outer surface, 

 villose on the inner surface; stamens 20; anthers dark rose color; styles 3-5. 

 Fruit ripening the end of September, in drooping glabrous clusters, sub- 

 globose, dark red, 1 cm. in diameter, the calyx little enlarged with a narrow 

 deep cavity rounded in the bottom, and spreading closely appressed lobes 

 often deciduous from the ripe fruit; nutlets 2-4, rounded at the ends, 

 rounded and slightly ridged on the back, 6-7 mm. long and 4-5 mm. 

 wide, the narrow pale hypostyle extending for a third of their length. 



