| Dicotyledon | Literature for Senecio sylvaticus
Wagner et al., 1990, 1999. |
| Asteraceae -- The Sunflower Family | Bibliography |
| Senecio sylvaticus | |
Common name(s): groundsel, wood groundsel |
| General Information | ||
|---|---|---|
| Distribution | Native to Eurasia.In the Hawaiian Islands, naturalized on O`ahu, Moloka`i, Maui, Hawai`i. | |
| Habit |
Erect annual herbs 2-8 dm tall, ± sparsely crinkly pubescent and glandular pubescent at least above. |
|
| Leaves |
Leaves oblanceolate to oblong, 2-4(-12) cm long, 0.4-1(-3.5) cm wide, pinnately veined, irregularly pinnatifid, sessile. |
|
| Flowers |
Heads in terminal, paniculate cymes, radiate; involucre cylindrical, 5-7 mm high, principal bracts ca. 13, bracts and bracteoles green-tipped; ray florets 8-15, rays inconspicuous, yellow, ca. 1-2 mm long; disk corollas yellow, 4-5 mm long. |
|
| Fruit |
Achenes ca. 2.5 mm long, sparsely appressed puberulent. |
|
| Chromosomes |
2n = 40 |
|