United States
Department of
Agriculture
Forest Service
Rocky Mountain
Research Station
Ft. Collins, CO
General Technical Report
RMRS-GTR-118-CD
February 2004
| Authors |
| Acknowledgments |
| Introduction |
| Species description format |
| Trees |
| Shrubs |
| Ferns & Friends |
| Forbs |
| Graminoids |
| Descriptive drawings |
| Collecting and pressing methods |
| Glossary |
| References |
Viola Conspectus
| Species | Rootstock | Leaves | Flower Stem | Flower | Similar Species |
|---|---|---|---|---|---|
| Viola adunca hook violet Viad | slender rhizomes | ovate; finely toothed | variable cauline leaves | blue to violet; 3 lower petals; white based | |
| Viola canadensis Canada violet Vica | short with slender stolons | cordate; acute apex; serrate | leafy; near tip | white; purplish-tinged outside; 3 lower petals purple-veined | Viola glabella |
| Viola glabella pioneer violet Vigl | spreading fleshy rhizomes without stolons | reniform to cordate; acute apex; serrate | leafy; near tip | bright yellow; 3 lower petals purple-veined | Viola canadensis |
| Viola orbiculata round-leaved violet Vior2 | short erect without stolons | evergreen; orbicular; rounded apex; serrate | leafy; near base | lemon yellow; 3 lower petals purple-veined | Asarum caudatum; Pyrola asarifolia |