Family CISTACEZ 97 
2. CISTACE. 
Rock-rose Family. 
Flowers yellow, petals 5 or wanting in some of the flowers, capsule 
1-celled. 1. Helianthemum. 
Flowers greenish or purplish, petals 3, capsules 3-celled. 2. Lechea. 
1. Helianthemum. 630. 
1. Helianthemum majus (L.) B. S. P. Frost-weed. 
In dry soil mostly in the eastern part of the state. Ewing; Long 
Pine; Louisville; Oreopolis; Swan lake. 
2. Lechea. 631. 
Leaves 4-10 mm. wide. 1. L. villosa. 
Leaves 1-2 mm. wide. 
Inner sepals 1-nerved. 2. L. tenuifolia. 
Inner sepals 3-nerved. 3. L. stricta. 
1. Lechea villosa Ell. Hairy Pinweed. 
In dry soil, not common. Ewing; Macon; Minden. 
2. Lechea tenuifolia Michx. 
In sandy soil along Sand creek near Minden. 
3. Lechea stricta Leggett. Prairie Pinweed. 
In dry places, not common, Ewing; Long Pine; Swan lake. 
3. VIOLACEZ. 
1. Viola. 633. 
Violets. 
| csceieeeanbae leaves basal except those on the runners; flowers never 
yellow. 
Leaves, at least some of them, lobed or divided. 
Leaves lobed, the terminal lobe broad. 
Basal lobes usually many; cleistogamous flowers on horizontal 
or deflexed peduncles. 1. V. palmata. 
Basal lobes usually few; cleistogamous flowers on erect pedun- 
cles. 5. V. sagittata. 
Leaves pedately divided into narrow lobes. 3. V. pedatifida. 
Leaves merely serrate or dentate. 
Leaves broad, cordate or truncate at the base. 
Glabrous or nearly so. 
Cleistogamous flowers on erect peduncles; leaves often 
toothed at the base. 5. V. sagittata. 
Cleistogamous flowers on deflexed peduncles. 
4. V. papilionacea. 
Villous pubescent. 2. V. sororia. 
Leaves narrowly lanceolate, tapering at the base. 6. V. lanceolata. 
Caulescent, stems leafy; flowers often yellow. 
Stipules not laciniate. 
Leaves tapering into margined petioles. 7. V. nuttallii. 
Leaves cordate or truncate at the base. 
Petals lemon-yellow, leaves crenate-dentate. 8. V. eriocarpa. 
Petals not yellow, leaves merely serrate. 9. V. canadensis. 
Stipules laciniate, large and foliaceous. 10. V. refinesquii. 
