Flora of North America species comparison

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Senecio warnockii

Warnock's ragwort
Habit Subshrubs, 20–40 cm (taproots forming woody crowns).
Herbage

closely, unevenly lanate-floccose, glabrescent.
Stems

usually multiple (strict or nearly so, arching-erect).
Leaves

(often recurved and thickish-turgid) concentrated distally on stems;

sessile or obscurely petiolate;

blades narrowly linear to filiform (2–7 cm × 1 mm), bases ± linear, margins entire.
Ray florets

usually ± 8, rarely 0;

corolla laminae 5–10 mm.
Phyllaries

± 13, 5–8 mm, tips green or minutely black.
Calyculi

0 or of 3–5 bractlets (lengths less than 1/2 phyllaries).
Heads

3–10 in corymbiform arrays (involucres weakly campanulate).
Cypselae

glabrous.

Senecio warnockii
Phenology Flowering fall (perhaps spring–summer).
Habitat Open sites, gypseous soils
Elevation 800–1500 m (2600–4900 ft)
Distribution
from FNA
NM; TX
[BONAP county map]
Discussion

Of conservation concern.

Senecio warnockii is infrequently collected; additional study may show it to be an edaphic phase of S. flaccidus. The restriction to gypseous soils and the gross aspect combine to make it distinctive.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 559.
Parent taxa 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. 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. wootonii
Name authority Shinners: Sida 1: 379. (1964)
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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