394 Annals of the Carnegie Museum. 



clusters, of 2-8, on short drooping, very slender pedicels, 1.5-3 cm. 

 long is subglobose, flattened at the apex, very slightly rounded at the 

 narrowed or depressed base, dull, rather dark red, often slightly mottled 

 vv^ith green, ripening in October and falling long after the leaves ; 

 lobes persistent, spreading and reflexed, or erect, the margins involute 

 at base, the serrate tips connivent ; cavity broad and shallow ; flesh 

 soft or mealy, sweet, white ; seed 3-4, 7-8 mm. long, 5-7 mm. across 

 the deeply sulcate rounded back, lateral faces plane, apical in fruit. 



C. bntmalis has been collected in the vicinity of Pittsburg, Pennsyl- 

 vania, where it is not uncommon, by J. A. Shafer and W. W. Ashe. 

 It can be separated from C. pastonini Sarg., to which it is most closely 

 related, by the different outline of the foliage and the larger and 

 coarser seed. 



CRAT.iiGUS Pennsylvantca \\. sp. A tree 5-10 m. in height, with 

 numerous long spreading and ascending branches forming an oval or 

 globose crown, the trunk sometimes 4 m. long and 2 dm. thick, un- 

 armed, covered with dark brown, firm, furrowed bark, the inner bark 

 a bright orange ; that on the branches smoother and gray-brown. 

 Twigs stout, bright brown, orange, or olive, at first pubescent, soon 

 glabrate, only the most vigorous shoots armed with a few ascending 

 thorns, 4-5 cm. long. Leaves membranaceous, bright light green, 

 on unfolding densely villose below, less so above, becoming glabrate 

 above, and remaining pubescent below only on the veins, broadly 

 ovate or deltoid in outline, 5-8 cm. long, 4-7 cm. wide, acute at apex, 

 rounded, truncate, or on vigorous shoots cordate at base, 4-5 pairs of 

 short ascending lobes, sharply serrate, nearly to the base, 5-7 pairs of 

 slender ascending primary veins ; petiole at first villose, at length 

 glabrate, 2-5 cm. long. The flowers, which appear about the middle 

 of May, in large loose compound villose corymbs, are about 20 mm. 

 wide ; calyx villose as are the oblong coarsely serrate lobes which are 

 soon glabrate; styles 4-5; stamens 10, anthers nearly white. The 

 fruit, borne in large loose compound clusters on villose pendent pedi- 

 cels, is subglobose, usually thicker than long, 16-18 mm. thick, 

 nearly glabrous, scarlet, capped by the large ascending lobes ; flesh 

 orange, sweet, very thick ; cavity broad, deep and cylindrous. The 

 fruit ripens and falls late, in September or early in October before the 

 leaves, which persist until those of most other species have fallen, late 

 in October. The Pennsylvania thorn belonged to the lo-stamened 

 section of the mol/is group, and is most closely related to C. Arno/diiVia 



