Flora of North America species comparison

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Senecio flaccidus var. douglasii

Senecio flaccidus var. monoensis
Photo is of parent taxon

bush groundsel, Douglas' ragwort, Douglas' threadleaf ragwort
Photo is of parent taxon

Mono groundsel, smooth threadleaf ragwort
Herbage

usually ± tomentose (usually with persistent, uneven grayish tomentum), sometimes unevenly glabrescent.

glabrate or glabrous.
Involucres

usually campanulate.

campanulate.
Phyllaries

(± 13) ± 21, 7–10(–12) mm.

(± 13) ± 21, 7–10+ mm.
Calyculi

bractlets well developed (lengths 1/3–1/2 phyllaries).

bractlets well developed (lengths, at least some, 1/2 phyllaries).

Senecio flaccidus var. douglasii

Senecio flaccidus var. monoensis
Phenology Flowering mostly summer–fall (year around in favorable sites). Flowering mostly summer–fall, less commonly spring.
Habitat Dry, open, sandy or rocky sites, usually areas with continual mild disturbance Open, rocky or sandy sites, especially desert basins and washes
Elevation 100–1500 m (300–4900 ft) 600–2000 m (2000–6600 ft)
Distribution
from FNA
CA; Mexico (Baja California)
[BONAP county map]
from FNA
AZ; CA; NM; NV; TX; UT; Mexico (Baja California)
[BONAP county map]
Discussion

Senecio flaccidus var. monoensis intergrades with var. douglasii and with var. flaccidus in areas of range overlap.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 559. FNA vol. 20, p. 559.
Parent taxa Asteraceae > tribe Senecioneae > Senecio > Senecio flaccidus Asteraceae > tribe Senecioneae > Senecio > Senecio flaccidus
Sibling taxa
S. flaccidus var. flaccidus, S. flaccidus var. monoensis
S. flaccidus var. douglasii, S. flaccidus var. flaccidus
Synonyms S. douglasii, S. douglasii var. tularensis S. monoensis, S. filicifolius, S. lathyroides, S. pectinatus
Name authority (de Candolle) B. L. Turner & T. M. Barkley: Phytologia 69: 52. (1990) (Greene) B. L. Turner & T. M. Barkley: Phytologia 69: 54. (1990)
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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