416 VIOLACEAE 
21. V. hastata, Michx. HALBERD-LEAVED VIOLET. Leaves halberd- 
shaped or oblong with heart-shaped base, slightly toothed, apex acute, 
stipules small, egg-shaped. Mountains of Penna. and southward. May. 
Flowers blue 
22. V.canadensis, L. (Fig. 6, pl. 100.) CANADIAN VioLET. Stems 
4 to 14 in. high, Leaves egg-shaped, heart-shaped at base, apex sharp 
pointed. Whole plant smooth or nearly so. Stipules not fringed or di- 
vided, egg-shaped. 
23. V. striata, Ait. PALE VIoLeT. STRIPED VIOLET. Similar in size and 
general growth to No. 22. Leaves round or egg-shaped, the apex less 
sharply pointed than No, 22. Stipules long, narrow, with sharp teeth at 
borders. Flowers on long flower stalks, light blue to white. Spur 4 as 
long as the corolla. Woods. May-July. 
24. V.labradorica, Shrank. (Fig. 3, pl. 100.) American Dry 
VIOLET. Stem weak, half reclining. Leaves from broadly egg-shaped to 
kidney-form or round, finely toothed at borders; plant smooth. Stipules 
lance-shaped with fringed borders. Flowers on long flower stems. spur 
half as long as the corolla, obtuse at the end. Color pale purple. Wet 
places. March-May. 
25. V. arenaria, DC. (Fig. 4, pl. 100.) Sanp Vioret. Resembles 
No. 24, but plant is covered with soft hairs. Color somewhat darker. 
Stipules are longer and are deeply incised. Sandy soil, Maine and west- 
ward. May-June. 
26. V. rostrata, Pursh. (Fig. 2, pl. 100.) LoneG-spuRRED VIOLET. 
Plant smooth, erect; leaves as in Nos. 24 and 25, Stipules fringed. 
Petals bearded. Spur longer than the corolla. Moist woods, generally 
distributed. June-July. 
V. tricolor, L., and V. odorata, L.. are sometimes found in our region 
as escapes from gardens. 
2. HYBANTHUS, Jacq. .(Cubelium, Raf. Solea, Spring’) 
Our species an erect leafy plant with rather inconspicuous greenish 
flowers growing from the leaf axils. Sepals equal, narrow lance-shaped. 
Petals nearly equal, the lower one 2-lobed and with a blunt spur. Sta- 
mens uniting to form a sort of sheath about the ovary. 
H. concolor, (Forst.) Raf. (Fig. 4, pl. 101.) Green ViIozLeT. 
Plant slightly downy, 1 to 2 ft. high. Leaves alternate, lance-shaped, 3 
to 43 in. long, 1/3 as wide. tips very slender and tapering. Flowers 2 o1 
3 in the axils, on short flower-stems, greenish. Moist woods, northern 
New York and southward. May-June. 
Famity V.—PASSIFLORACEAE. Passton Frowrer FAMILY 
Sepals more or less united, forming a tube from which project 
5 points. The throat of the calyx is covered by rows of sterile 
stamen filaments. Above these is the corolla. Fertile stamens 5. 
Our single species is a climbing, tendril-bearing, vine. 
