Flora of North America species comparison

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Senecio lugens

Senecio neowebsteri
Senecio lugens

black-tip groundsel, small blacktip ragwort
Senecio neowebsteri

Olympic Mountain ragwort
Habit Perennials, (10–)20–35(–50) cm (rhizomes suberect to creeping). Perennials, 7–15(–20+) cm (rhizomes fibrous-rooted).
Herbage

loosely, often unevenly, floccose-tomentose, glabrescent.

(sometimes purplish-tinged) floccose-tomentose, unevenly glabrescent.
Stems

single or clustered.

single or loosely clustered (erect or arching).
Leaves

reduced distally; petiolate;

blades narrowly obovate to oblanceolate, (4–)8–18(–25) cm, bases tapered, margins subentire to dentate (denticles callous; mid and distal leaves bractlike, clasping).

mostly cauline; petiolate (petioles about equaling blades);

blades lanceolate or oblanceolate to ovate, (2–)4–8+ × 1.5–3 cm, bases tapered, margins denticulate (distal leaves smaller, lanceolate or linear-lanceolate, bractlike).
Ray florets

(± 5) ± 8 (± 13);

corolla laminae 8–10(–15) mm.

± 13;

corolla laminae ± 15 mm.
Phyllaries

(± 8) ± 13 (± 21), 4–7 mm, tips black.

usually ± 21, sometimes ± 13, (8–)10–15 mm, tips usually greenish (often sparsely hairy).
Calyculi

of 2–5 linear bractlets (1–2 mm).

of 4–8 lanceolate to lance-linear bractlets (lengths mostly less than 1/2 phyllaries).
Heads

(2–)7–12(–20+) in corymbiform arrays.

nodding, 1(–2).
Cypselae

glabrous.

glabrous.
2n

= 40, 80.

= 40.

Senecio lugens

Senecio neowebsteri
Phenology Flowering summer. Flowering late summer–early fall.
Habitat Moist meadows, gravelly streambeds, open woods in alpine or boreal sites High talus slopes
Elevation 200–2500 m (700–8200 ft) 2200–2600 m (7200–8500 ft)
Distribution
from FNA
AK; MT; WA; WY; AB; BC; NT; YT
[WildflowerSearch map]
[BONAP county map]
from FNA
WA
[WildflowerSearch map]
[BONAP county map]
Discussion

Senecio lugens varies greatly in robustness across its range. It is scattered widely in the Rocky Mountain uplift and adjacent regions from northern Wyoming to Alaska; it is disjunct in the Olympic Peninsula, Washington. Superficially similar to S. integerrimus, S. lugens has well-developed, coarse, spreading rootstocks with branching roots; S. integerrimus arises from foreshortened, buttonlike caudices with abundant unbranched, fleshy-fibrous roots.

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

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 554. FNA vol. 20, p. 553.
Parent taxa Asteraceae > tribe Senecioneae > Senecio Asteraceae > tribe Senecioneae > Senecio
Sibling taxa
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. 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. 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. 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. glaucescens, S. imbricatus, S. integerrimus var. lugens S. websteri
Name authority Richardson: in J. Franklin et al., Narr. Journey Polar Sea, 748. (1823) S. F. Blake: Leafl. W. Bot. 8: 143. (1957)
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).



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