Senecio triangularis |
Senecio viscosus |
|
---|---|---|
arrowleaf groundsel, arrowleaf ragwort |
sticky ragwort |
|
Habit | Several-stemmed, glabrous, fibrous-rooted perennial 3-15 dm. tall. | |
Leaves | Numerous, not tufted at the base nor strongly reduced upward, the lower triangular to triangular-cordate, long-petiolate, the upper with shorter petioles and narrower blades; leaf blades 4-20 cm. long and 2-10 cm. wide, usually strongly toothed. |
|
Flowers | Heads several in a short, flat-topped inflorescence; involucre 7-10 mm high, the principle bracts usually 13 but occasionally about 8. rays mostly 8, sometimes fewer, 7-13 mm. long, yellow. |
|
Senecio triangularis |
Senecio viscosus |
|
Identification notes | The large, numerous, toothed, triangular leaves on a tall, lush plant growing in a wet area in the mountains will usually identify this species. | |
Flowering time | June-September | June-September |
Habitat | Moist places and streambanks from the lowlands to the subalpine. | Roadsides, fields, ditches, wastelots, and other disturbed areas at low elevations. |
Distribution | Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
|
Occurring west of the Cascades crest in Washington; British Columbia to Washington, east across Canada to the Atlantic Coast.
|
Origin | Native | Introduced from Eurasia |
Conservation status | Not of concern | Not of concern |
Sibling taxa | ||
Subordinate taxa | ||
Web links |
|
|