1905.] NATURAL SCIENCES OF PHILADELPHIA. 583 



delphia, A. MacElwee (No. 2,270, Herb. Philadelphia Museums), June, 

 1901 ; Canby and Sargent, September, 1902; Smith and Sargent, October, 

 1904. 



This species is named for John Bartram, the distinguished Pennsyl- 

 vania botanist of the eighteenth century, by whom, perhaps, was 

 planted the hedge of thorn trees in which it is growing. 



II.— PUNCTAT.^. 



Anthers rose color or yellow ; stamens 20 ; leaves obovate, often acutely 

 lobed above the middle, especially on vigorous shoots, more or less 

 villose below; fruit on short pedicels, flattened at the ends, marked 

 by large pale dots, dull red or bright yellow, . . 1. C. punctata. 



Anthers rose color; stamens 10-20; leaves oblong-obovate to oval, 

 glabrous at maturity; fruit on elongated slender pedicels, occa- 

 sionally slightly obovate, dark brick-red marked by large pale dots, 



2. C. pausiaca. 



1. Crataegus punctata Jacquin. 



Hort. Vind., I, 10, t. 28 (1770). Sargent, Silva N. Am., IV, 103, t. 184; 



Man. 389, f. 308. 

 Cratcegus crocata Ashe, Ann. Carnegie Mus., I, 389 (1902). Gruber, Proc. 



Berks County Nat. Sci. Club, I, 21 (Crataegus in Berks County, II). 



Common in eastern Pennsylvania ; also from the Province of^Quebec 

 to Illinois and through the northeastern States, and along the Appa- 

 lachian Mountains, to North Carolina and Tennessee. 



Cratcegus crocata is the common yellow-fruited form which appears 

 to be most abvmdant in the region adjacent to Lakes Ontario and Erie. 



Crataegus punctata var. canescens Britton. 



Bull. Torrey Bot. Club, XXI, 231 (1894). Sargent, Man. 389. 



Bucks county: Durham, C. D. Fretz (No. 153), May and September, 

 1901. Mom-oe county: Near Stroudsburg, W. M. Canby, May, 1903. 



This is a form densely hoary-tomentose on the under surface of the 

 leaves and on the pedicels and corymbs. 



2. Crataegus pausiaca Ashe. 



Ann. Carnegie Mus., I, 390 (so far as relates to Bucks county) (1902). 



Sargent, Trees and Shrubs, I, 105, t. 53; Man. 390, f. 309. 



Bucks county: Without locality, W. W. Ashe, June and October, 

 1900; Durham, C. D. Fretz (No. 147), May and October, 1901. 'Dela- 

 ware county : Newtown, near Crum creek above the West Chester road, 

 B. H. Smith (No. 192), May, September and October, 1901, May, 1902, 

 Smith and Sargent, September, 1902; Lownes' Run, Springfield, B. H. 

 Smith (No. 235), May and September, 1903; meadows near Chadsford, 

 W. M. Canby, September, 1903. 



