256 Karl M. Wiegand and Arthur J. Eames 



18. C. coccinea L. (C. Elwangeriana Sarg., C. pedicellata Sarg., and possibly 

 also C. Pringlei Sarg. and C. albicans Ashe.) 



Upland pastures and thickets, in gravelly soils or in mixed clays and gravels, but 

 less abundant on the heaviest clays ; common. May 10-15, rarely June 5 ; f r. Sept. 



Widely distributed throughout the basin, but apparently absent on the chestnut 

 soils. Very abundant in the McLean and West Groton districts, and frequent 

 along both sides of Cayuga Lake, but not seen on the hills s. of Ithaca beyond 

 South Hill. 



Conn, to Ont. and 111., southw. to Del. and Pa. (Eggleston) ; rare or absent on the 

 Coastal Plain. 



Apparently this plant hybridizes with C. pruinosa and C. beata, and probably with 

 several other species. In the Cayuga Lake Basin it is represented by several 

 strains which may prove to be distinct: (a) Leaves broadly ovate-oval, with spread- 

 ing lobes and generally with truncate or rounded bases ; fruit subpyriform, at least 

 when dry (typical C. coccinea L. ?). (b) Leaves oval or suborbicular, rounded at 

 base and somewhat above, lobes shallow; fruit subglobose, at least when dry (C. 

 Pringlei Sarg.). (c) Leaves broadly ovate-oval, generally fewer-veined, those on 

 the shoots subcordate; lobes as in form a; fruit oval (C. albicans Ashe?). The 

 strains apparently intergrade. 



19. C. submollis Sarg. (C. champlaincnsis Sarg.?) 



Hedgerows, in gravelly, more or less calcareous, soils ; rare. May 10-30 ; f r. 

 Sept. 



Butternut Creek, e. of Trumbull Corners (Wm. Moore !) ; Elm St., Ithaca, one 

 mile out (Wm. Moore !) ; Howland Point; outlet of the north spring, Union Springs. 



Que to s. Ont., southw. to Mass. and N. Y. (Eggleston). 



In the plants of the Cayuga Lake Basin the leaf base is scarcely more cuneate 

 than in the western C. mollis, instead of plainly cuneate as stated for C. submollis 

 by Eggleston. However, the stamens are 10 instead of 20, and, since the eastern 

 plants generally have 10 stamens while the western plants have 20, it is probably 

 wise for the present to segregate these under Sargent's name, C. submollis. 



12. Fragaria (Tourn.) L. 



a. Plant large and coarse ; leaves rugose, hairy, with blunt or merely acute teeth ; 

 flowers in large or medium-sized corymbs. [F. chiloensis, 



var. ananassa] 

 a. Plant smaller and more slender ; leaves scarcely rugose ; teeth sharp. 



b. Flowers in corymbs ; achenes immersed in pits in the flesh of the receptacle ; 

 leaflets dull glaucous green above, not rugose, with ascending veins and teeth ; 

 surface between the veins beneath glabrous or nearly so; flowers generally 

 20 mm. in diam. 

 c. Plant small or of medium size; hairs of the pedicels usually appressed. 



1. F. virginiana 

 c. Plant coarser and larger ; hairs of both scapes and pedicels spreading. 



la. F. v., var. illinoensis 



b. Flowers in panicles or proliferous umbels ; achenes superficial ; leaflets bright 



green above, more or less impressed vein}', with more spreading veins and 



teeth; surface between the veins beneath silky; flowers about 13 mm. in 



diam. 



c. Plant not slender, more or less villous with spreading hairs on the petioles 



and peduncles ; fruit red or white. 2. F. vesca 



c. Plant slender, with thin leaves ; pubescence sparse and more appressed ; fruit 

 red. 2a. F. v., var. amcricana 



