Flora of North America species comparison

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Senecio flaccidus var. monoensis

Senecio flaccidus var. flaccidus
Photo is of parent taxon

Mono groundsel, smooth threadleaf ragwort
Photo is of parent taxon

threadleaf ragwort
Herbage

glabrate or glabrous.

usually tomentose (hairs whitish), sometimes unevenly glabrescent.
Involucres

campanulate.

cylindric or weakly campanulate.
Phyllaries

(± 13) ± 21, 7–10+ mm.

± 13 (± 21), 5– 8+ mm.
Calyculi

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

bractlets minute or 0.

Senecio flaccidus var. monoensis

Senecio flaccidus var. flaccidus
Phenology Flowering mostly summer–fall, less commonly spring. Flowering mostly summer–fall, less frequently spring.
Habitat Open, rocky or sandy sites, especially desert basins and washes Dry, open sandy or rocky plains, streambeds, and canyons
Elevation 600–2000 m (2000–6600 ft) 800–2400 m (2600–7900 ft)
Distribution
from FNA
AZ; CA; NM; NV; TX; UT; Mexico (Baja California)
[BONAP county map]
from FNA
AZ; CO; KS; NM; OK; TX; UT; Mexico
[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.)

Senecio flaccidus var. flaccidus intergrades at least to some extent with var. monoensis in areas of overlapping ranges; a case could be made for treating the two as distinct species, as done by A. Cronquist (1994).

(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. douglasii, S. flaccidus var. flaccidus
S. flaccidus var. douglasii, S. flaccidus var. monoensis
Synonyms S. monoensis, S. filicifolius, S. lathyroides, S. pectinatus S. douglasii var. jamesii, S. douglasii var. longilobus, S. longilobus
Name authority (Greene) B. L. Turner & T. M. Barkley: Phytologia 69: 54. (1990) unknown
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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