582 PROCEEDINGS OF THE ACADEMY OF [Sept., 



120), October, 1889; meadows of Tohikon creek, Quakertown, W. M. 

 Ccmbij, May, 1900. Also in the hedge of old thorn trees bordering the 

 lane leading to Bartram's Garden in West Philadelphia, where, judging 

 by the size of these trees, it may have been planted by John Bartram 

 himself; also in Delaware and Maryland. 



4. Crataegus arduennae Sarg. 



Bot. Gazette, XXXV, 377 (1903); Man. 373, f. 291. 



Berks county: Near Kiitztown, C. L. Gruber (No. 145), 1902, August 

 and October, 1903, June, 1904; also from southern Michigan to north- 

 eastern Illinois. 



5. Crataegus bartramiana n. sp. 



Leaves obovate-cuneate, abruptly short-pointed or rarely rounded at 

 the apex, gradually narrowed to the elongated slender base, coarsely 

 and often doubly serrate above, wdth glandular teeth, nearly fully 

 grow^n when the flowers open during the first week of June, and at 

 matiu-ity glabrous, dark green and lustrous on the upper, dull and paler 

 on the lower surface, 2.5-4 cm. long and 1.5-2 cm. wide, with very 

 slender primary veins mostly within the parenchyma; petioles slender, 

 winged usually to below the middle, sometimes glandular, with occa- 

 sional large dark glands, 6-7 cm. long; leaves of vigorous shoots obo- 

 vate to oblong-obovate, usually short-pointed at the apex, coarsely 

 serrate often to below the middle, 5-8 cm. long and 4-5 cm. wide, with 

 linear lanceolate coarsely glandular-serrate deciduous stipules. Flow- 

 ers about 8 mm. in diameter, on slender pedicels, in compound many- 

 flowered corymbs, with linear slightly glandular caducous bracts and 

 bractlets; calyx-tube narrowly obconic, the lolDes elongated, linear, 

 entire or rarely obscurely glandular-dentate; stamens 8-10; anthers 

 pale yellow; styles 1 or 2, or rarely 3. Fruit ripening from the middle 

 to the end of September, on stout pedicels, in drooping many-fruited 

 clusters, subglobose but a little longer than broad, crimson, lustrous, 

 marked by large dark dots, S-10 mm. in diameter; calyx-cavity broad 

 and shallow, the lobes enlarged, spreading, reflexed, entire or coarsely 

 serrate and mostly persistent on the ripe fruit; nutlets 1 or 2, full and 

 rounded at the ends, prominently ridged, wdth broad grooved ridges, 

 about 7 mm. long and 5-6 mm. wide. 



A tree 5-7 m. high, with a trunk 25-30 cm. in diameter, covered with 

 dark red-brown scaly bark, stout spreading branches, and slender 

 slightly zigzag dark dull red-brown branchlets armed with numerous 

 stout straight purplish thorns 4-5 cm. long. 



Hedgerow along the lane leading to Bartram's Garden, West Phila- 



