POPULAR FLORA. 127 
8. LANCE-LEAVED VioueT. Leaves lance-shaped, erect, smooth; petals not bearded. _‘V. lanceolata. 
++ ++ ++ Flowers light yellow, small. 
_ 9. RounD-LEAvED V. Leaves round ovate and heart-shaped, spreading flat on the ground; side- 
petals bearded and brown-streaked inside. Cold woods, N. V. rotundifolia. 
* ¥ Leafy-stemmed species. ‘ 
+ Wild species, perennial, with heart-shaped leaves, blossoming nearly all summer. 
10. Lonc-spurRED V. Spur ¥’ long, considerably longer than the pale bluish corolla. V. rostrata. 
11. Muntensere’s V. Low, spreading by runners; spur stout, not more than half the length of 
the pale violet corolla. Wet woods. V. Muhlenber git. 
12. Pate V. Spur much shorter than the cream-colored corolla; lower petal streaked. V. striata. 
13. Canapa V. Tall; petals white above, violet-tinged beneath; spur very short. V. Canadénsis. 
14. Downy V. Tall, leafless below, downy; corolla yellow, spur very short. Vu: pubéscens. 
+ + Cultivated or run wild; root annual or biennial. 
15. HEART’S-EASE oR Pansy V. Low; upper leaves oval, the lower heart-shaped; stipules large 
and leaf-like, pinnatifid; corolla yellow-whitish, violet-blue, and purple, varying or mixed, large 
and showy in the cultivated Pansy, becoming small when run wild. V. tricolor. 
13. CISTUS FAMILY. Order CISTACES. 
This small family consists of low shrubby plants or perennial herbs, in Europe with a 
showy corolla which opens only once, in sunshine, 
the petals falling off at sunset. Here it contains 
only a few less handsome, or homely, weed-like 
plants. They may be known by the followiug 
marks. — Leaves some of them alternate. Calyx 
remaining after blossoming, of 5 sepals, three of 
them large and two smaller, often very small, the 
latter entirely outside in the bud and looking like 
bracts. Petals 5 or 3, all alike, overlapping each 
other in the bud, each with one edge covering the 
one before it, but covered by that behind it. Sta- 
mens from 3 to 20 or more, all separate, borne on 
the receptacle. Pistil one, making a one-celled 
pod, with the seeds borne on three lines down the 
walls, or on projections from them, that is, with 
24. Plower, &c. of Frostweed, 295. Its calyx and 3 parietal placentas. 
Pistil. 298. Its ovary cut across and magnified. 
Petals 5, yellow, falling after the flower has opened for one day only. 
Style none. Petals crumpledinthe bud, (Helidnthemum) FrostTwEep. 
Style slender. Little shrubs with minute leaves on sandy shores, (Hudsinia) Hupsonta. 
Petals 3, purplish, persistent. Flowers very small. (Léchea) PINWEED, 
