|
heath groundsel, wood groundsel, woodland groundsel, woodland ragwort
|
tall blacktip ragwort
|
| Annuals, (15–)30–80+ cm (taproots fibrous-rooted). |
Perennials, (20–)35–70(–80+) cm (rhizomes or caudices branched, erect to weakly creeping). |
puberulent (hairs abundant, curly). |
floccose-tomentose to canescent, sometimes unevenly glabrescent. |
single. |
1–(2–5). |
evenly distributed; petiolate; blades obovate to oblong, 3–7(–12) × 1–3(–4) cm, usually 1–2-pinnate, bases tapered, ultimate margins dentate (distal leaves similar, clasping, bractlike). |
progressively reduced distally; petiolate; blades oblong-ovate to oblanceolate, (5–)10–30 × 1.5–4(–6) cm, bases tapered, margins dentate (denticles, dark, callous; mid leaves similar, sessile, smaller; distal leaves bractlike). |
0 or 1–8+; corolla laminae usually 1–2+ mm (barely surpassing phyllaries). |
(± 3) ± 5; corolla laminae 5–8 mm. |
± 13 (± 21), 4–7+ mm, tips greenish or minutely black. |
(± 5) ± 8, 6–8 mm, tips black. |
0 or of 1–5+ linear to filiform bractlets. |
of 2–5 linear bractlets (lengths to 1/3 phyllaries). |
12–24 in corymbiform arrays. |
20–60+ in corymbiform or subpaniculiform arrays. |
hairy (especially on angles). |
glabrous. |
= 40. |
= 40. (A report of 2n = 46 is presumably erroneous.) |
|
|
|
|
| Flowering late spring–summer (northern areas of cool, climate); winter (southern areas). |
Flowering late spring–early fall. |
| Mildly disturbed woodlands, open, sandy sites |
Dry or drying, rocky or sandy sites in coniferous areas, especially sites with frequent disturbance |
| 100–300 m [300–1000 ft] |
2800–4000 m [9200–13100 ft] |
|
CA; LA; MA; MI; NJ; OH; OR; PA; WA; WI; BC; NB; NF; NS; PE; QC; Eurasia [Introduced in North America]
|
CO; NM; UT; WY
|
Senecio sylvaticus is a Eurasian weed that favors cool, wet climates. It is well established in coastal areas of the Pacific Coast and in parts of Newfoundland and Quebec; elsewhere in the flora, it appears to be sporadic. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
| FNA vol. 20, p. 563. Treatment author: Theodore M. Barkley†. |
FNA vol. 20, p. 554. Treatment author: Theodore M. Barkley†. |
| Asteraceae > tribe Senecioneae > Senecio |
Asteraceae > tribe Senecioneae > Senecio |
S. actinella, S. amplectens, S. ampullaceus, S. aphanactis, S. arizonicus, S. aronicoides, S. astephanus, S. atratus, S. bigelovii, S. blochmaniae, S. californicus, S. cannabifolius, S. clarkianus, S. crassulus, S. elegans, S. elmeri, S. eremophilus, S. ertterae, S. erucifolius, S. flaccidus, S. fremontii, S. hydrophiloides, S. hydrophilus, S. integerrimus, S. jacobaea, S. lemmonii, S. lugens, S. lyonii, S. megacephalus, S. mohavensis, S. multidentatus, S. neowebsteri, S. parryi, S. pattersonensis, S. pseudoarnica, S. pudicus, S. quaylei, S. rapifolius, S. riddellii, S. sacramentanus, S. scorzonella, S. serra, S. sheldonensis, S. soldanella, S. spartioides, S. sphaerocephalus, S. spribillei, S. squalidus, S. taraxacoides, S. triangularis, S. viscosus, S. vulgaris, S. warnockii, S. wootonii |
S. actinella, S. amplectens, S. ampullaceus, S. aphanactis, S. arizonicus, S. aronicoides, S. astephanus, S. bigelovii, S. blochmaniae, S. californicus, S. cannabifolius, S. clarkianus, S. crassulus, S. elegans, S. elmeri, S. eremophilus, S. ertterae, S. erucifolius, S. flaccidus, S. fremontii, S. hydrophiloides, S. hydrophilus, S. integerrimus, S. jacobaea, S. lemmonii, S. lugens, S. lyonii, S. megacephalus, S. mohavensis, S. multidentatus, S. neowebsteri, S. parryi, S. pattersonensis, S. pseudoarnica, S. pudicus, S. quaylei, S. rapifolius, S. riddellii, S. sacramentanus, S. scorzonella, S. serra, S. sheldonensis, S. soldanella, S. spartioides, S. sphaerocephalus, S. spribillei, S. squalidus, S. sylvaticus, S. taraxacoides, S. triangularis, S. viscosus, S. vulgaris, S. warnockii, S. wootonii |
|
S. atratus var. milleflorus, S. milleflorus |
| Linnaeus: Sp. Pl. 2: 868. (1753) |
Greene: Pittonia 3: 105. (1896) |
| |
BC, 
CA, 
OR, 
WA
Flora NW, 
Go Botany, 
LA Plants, 
MI Flora, 
PNW Herbaria
WildflowerSearch
iNaturalist (observations)
USDA Plants Database
SW CO Wildflowers
