1903.] NATURAL SCIENCES OF PHILADELPHIA. 



687 



A specimen from Willow Grove, Montgomery county, Pennsylvania, 

 July 16, 1902, No. 3,319, Herb., W. S.,has developed branches at the 

 summits of the fruiting pedicels, which have produced one or two 

 smaller pods, apparently from cleistogamic flowers, and several small 

 leaves, those on the lowest pedicel being orbicular, 20 mm. in diameter. 



It seems certain that Nuttall's var. eriocarpon from Philadelphia 

 is nothing more than an individual variation of this species. The 

 pubescence of the pods is variable and not corollated with any other 

 characters. 



27- Viola scabriuscula Schw. 



Viola scabriuscula Schweinitz, 1822, Am. Jour. Sci., V, p. 75. 



i^ange.— Southeastern Pennsylvania to the highest mountains of 

 Wyoming county, also northern New Jersey south to Trenton (Britton). 



Habitat. — Damp woods along streams. 



Descrtp^ion.— Flowering plant, Crum creek, Delaware county, Penn- 

 sylvania, April 10, 1903, No. 5,162, Herb., W. S. Stem glabrous or 

 nearly so, often recumbent ; leaves nearly glabrous, but with pubescence 

 on the veins below, finely dentatc-crenate,reniform, 20 x 30 mm. ; stipules 

 similar to puhescens; petiole (of first leaf) 30 mm., glabrous. Flo\\er 

 yellow, closely resembling the preceding species ; pedicel glabrous, 20 

 mm. long. Plants 90 mm. in height. The first leaf and its flower 

 clearly overtop the rest of the upper stem in this species at this stage, 

 and the flower of the latter seems to be frequently cleistogamic. In 

 puhescens the two flowers are about on a level and both flower at once. 

 There are always two or three radical, reniform, glabrous leaves on 

 pedicels 30 mm. long, and often several stems from one root. 



Fruiting plants, Crum creek, May 17, 1903. No. 5,164, Herb., W. S. 

 Plants 350 mm. tall, bearing three nearly triangular or slightly reni- 

 form leaves, coarsely dentate, crenate, 50 x 60 mm., with usually one 

 seed-pod and a cleistogamic flower. Pods 10 mm. long, white, woolly 

 or glabrous on contiguous plants. There are usually several smaller 

 radical leaves. The pubescence of the pods seems to be purely an 

 individual character, and is more variable than in V. puhescens. 



Viola hastata occurs on the southern Alleghanies of Pennsylvania, 

 north to Blair county, but not eastward. 



28. Viola striata Ait. 



Viola striata Alton, 1789, Hortiis Kewensis, III, p. 290. 

 Viola ochroleuca Sclnveinitz, 1822, Am. Jour. Sci., V, p. 69. 



ieonge.— Southeastern Pennsylvania, in the river valleys. Very 

 plentiful in the lower Susquehanna, also on the Brandy^vine at Chadd's 

 Ford. Near Philadelphia it occurs only at Bartram's Garden, where 



