DICOTYLEDONOUS PLANTS 151 
§ 2. Leafy-stemmed perennials. 
5. V. pubescens, Ait. Downy YeELLow VioLer. Soft, downy, 
6-12 in. high. Leaves broadly heart-shaped, toothed, with large 
stipules. Flowers yellow, with a short spur. : 
6. V. canadensis, L. CANADA VIOLET. Stems very leafy, smooth, 
1 ft. or more high. Leaves heart-shaped, taper-pointed, serrate. 
Flowers large and handsome; petals white, or nearly so, inside, the 
upper ones usually violet-tinged beneath, lateral petals bearded. 
§ 3. Leafy-stemmed, from an annual, biennial, or occasionally short- 
lived perennial root; stipules about as large as the leaves. 
7. V. tricolor, L. Pansy, Heart’s-EAsE. Stem _ branching, 
angular, hardly erect. Leaves variable, more or less ovate, crenate. 
Flowers large (often more than 1 in. across), flattish, short-spurred, 
exceedingly variable in color. Cultivated from Europe. 
Variety arvensis. JOHNNY-JUMP-UP, LADY’s-DELIGHT. A small 
flowered variety. Introduced in gardens and sometimes appearing 
like a native plant. 
67. PASSIFLORACEZ. PASSION-FLOWER FAMILY. 
Shrubs or herbs, climbing by axillary tendrils. Leaves 
alternate, simple, mostly 3-lobed. Flowers axillary, on jointed 
peduncles, solitary or few together, perfect, regular, often 
showy. Calyx-tube 4-5-lobed, persistent. Petals usually 5, 
inserted on the throat of the calyx-tube, which is fringed 
with a crown of 1-3 rows of long and slender filaments. 
Stamens 5, their filaments united, and enclosing the stalk of 
the ovary. Styles 1-5; ovary with 3-5 parietal placente. 
Seeds numerous, fruit fleshy. 
PASSIFLORA, L. 
Characters of the family. 
1. P. incarnata, L. PAsSSION-FLOWER. Perennial. Stem often 
20-30 ft. long, somewhat angled or striate, smooth below, downy 
above. Leaves broadly heart-shaped, palmately 3-5-lobed, the lobes 
acute, finely serrate, usually heart-shaped at the base; petiole bearing 
