Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Senecio actinella

Senecio erucifolius

Flagstaff ragwort

hoary ragwort
Habit Perennials, (7–)20–30(–40+) cm (rhizomes exfoliating). Perennials, 30–120 cm (rhizomes branched, sometimes producing stolons).
Herbage

densely lanate-tomentose, glabrescent (especially on adaxial faces of leaves).

floccose-tomentose, unevenly glabrescent (persistently hairy on abaxial leaf faces).
Stems

single.

usually single, sometimes loosely clustered.
Leaves

mostly basal; petiolate;

blades narrowly obovate, (2–)3–7(–10) × 1–2(–3+) cm, bases tapered, margins subentire to denticulate (cauline leaves bractlike).

± evenly distributed (basal and proximal sometimes withering before flowering); petiolate (proximal) or sessile;

blades ovoid or oblong to spatulate (usually pinnatifid to pinnatisect, lobes ± lanceolate to linear), (3–)5–12 × (1.5–)2–4 cm, bases tapered to ± truncate, ultimate margins (often revolute) dentate or entire.
Ray florets

± 13;

corolla laminae usually 8–10 mm (sometimes tubular, unexpanded, heads then perhaps technically disciform).

± 13;

corolla laminae 12–15 mm.
Phyllaries

± 21, 8–12 mm, tips greenish (with white bristles).

± 13, 5–7 mm, tips green or greenish.
Calyculi

of (1–)5–8+ linear to filiform bractlets (lengths 1/3–3/4 phyllaries).

of 4–6(–10) bractlets (lengths to 1/2 phyllaries).
Heads

1(–3).

20–60 in corymbiform arrays.
Cypselae

hairy.

hairy.

Senecio actinella

Senecio erucifolius
Phenology Flowering summer. Flowering summer.
Habitat In duff, rocky woodlands, especially in pine-dominated areas Waste grounds
Elevation 2000–3000 m (6600–9800 ft) 0–200+ m (0–700+ ft)
Distribution
from FNA
AZ; NM; Mexico (Chihuahua, Durango)
[WildflowerSearch map]
[BONAP county map]
from FNA
PA; Old World [Introduced in North America]
[BONAP county map]
Discussion

Plants of Senecio actinella with relatively small proximal leaves similar to basal leaves and adaxial leaf faces early glabrate have been recognized as var. mogollonicus; the distinction is difficult to maintain. Receptacles in Senecio actinella are sometimes insect-infested.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Senecio erucifolius has been introduced occasionally around seaports and has persisted. At present, it appears to be uncommon and highly localized; it should be expected almost any place that its close relative, Senecio jacobaea, occurs.

Senecio erucifolius was treated in Jacobaea by E. Wiebe (2000); see discussion under 53. S. jacobaea.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 553. FNA vol. 20, p. 569.
Parent taxa Asteraceae > tribe Senecioneae > Senecio Asteraceae > tribe Senecioneae > Senecio
Sibling taxa
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. sylvaticus, 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. atratus, S. bigelovii, S. blochmaniae, S. californicus, S. cannabifolius, S. clarkianus, S. crassulus, S. elegans, S. elmeri, S. eremophilus, S. ertterae, 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
Synonyms S. actinella var. mogollonicus, S. mogollonicus Jacobaea erucifolia
Name authority Greene: Bull. Torrey Bot. Club 10: 87. (1883) Linnaeus: Fl. Suec. ed. 2, 291. (1755)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America

The species comparison tool is brought to you by:
Northwest Wildflowers