302 Karl M. Wiegand and Arthur J. Eames 



2. H. canadense (L.) Michx. Frostweed. 



In situations similar to the preceding; rare. June-July. 



Junius, sandy wooded banks e. of Lowery Ponds and e. of Pout Pond. 



Me. to Wis., southw. to N. C. and Miss. ; common on the Coastal Plain. 



2. Lechea (Kalm) L. 

 1. L. intermedia Leggett. (L. thymifolia of Cayuga Fl.) Pinweed. 



Dry gravelly soils ; rare. July-Sept. 



Reported from dry soil, n. side of Salmon Creek ravine, by Dudley as L. thymi- 

 folia, but Dudley's specimen in the C. U. Herb, from this locality is /,. intermedia 

 Leggett. 



N. B. and N. S. to Wis., southw. to Pa., including the northern Coastal Plain. 



89. VIOLACEAE (Violet Family) 



a. Flowers greenish ; sepals not auricled ; stamens fused, with a gland on the lower 

 side; plants tall, leafy. 1. Hybanthus 



a. Flowers white or colored ; sepals auricled ; corolla more irregular ; stamens 

 distinct or slightly coherent, the lower two spurred; plants low. 



2. Viola 



1. Hybanthus Jacq. 



1. H. concolor (Forst.) Spreng. (Ionidium concolor of Cayuga Fl.) Green 

 Violet. 



Damp banks and thickets, in rich gravelly or rocky calcareous soils ; scarce. May 

 15-June 10. 



Enfield Glen, near foot of talus, n. side; Six Mile Creek, e. of Sulphur Spring, 

 formerly (D.) ; ravine at Crowbar Point; Salmon Creek, n. side below Ludlow- 

 ville (D. !) and also on flats in the ravine s. of Genoa; "woods, Ledyard," 1827 

 (Herb. J. J. Thomas, D.) ; Paine Creek; Big Gully. 



N. N. Y. to Mich., southw. to N. C. and Kans. A plant of the rich limy soils of 

 the Ohio Valley region. 



2. Viola (Tourn.) L. 



Key to species based on petaliferous flowers 



a. Plants stemless ; leaves and scapes all from rootstocks or runners. (2d a, p. 303.) 

 b. Rootstocks stout, (2.5) 3-10 mm. in diam., short. 

 c. Flowers blue, rarely white; style beaked at summit in front. 



d. Leaves cordate-reniform or cordate-ovate in general outline, smooth or 

 hairy. , 



e. Beard, or a part of it, usually of strongly clavate hairs; sepals narrow, 

 often ciliate-serrulate toward the apex; flowers generally with a dark 

 eye, on peduncles much exceeding the leaves ; spurred petal shorter 

 than the lateral petals, glabrous ; (leaves inconspicuously crenate, 

 nearly or quite glabrous). 1. V. cucullata 



e. Beard of cylindrical or only slightly clavate hairs ; sepals entire toward 

 the apex ; flowers without a dark eye, on peduncles usually equaling or 

 shorter than the leaves ; spurred petal as long as the lateral petals, 

 glabrous or hairy. 

 /. Leaves practically glabrous, not ciliate, undivided ; spurred petal villous. 

 g. Leaf blades of the later leaves ovate, strongly toothed ; petioles and 



peduncles smooth. 2. V . affinis 



g. Leaf blades reniform, less strongly toothed; petioles and peduncles 

 granulose along the upper part. 3. V. latiuscula 



