Senecio flaccidus var. monoensis

(Greene) B. L. Turner & T. M. Barkley

Phytologia 69: 54. 1990.

Basionym: Senecio monoensis Greene Leafl. Bot. Observ. Crit. 1: 221. 1906
Synonyms: Senecio filicifolius Greenman Senecio lathyroides Greene Senecio pectinatus A. Nelson
Treatment appears in FNA Volume 20. Treatment on page 559. Mentioned on page 558.

Herbage glabrate or glabrous. Calyculi: bractlets well developed (lengths, at least some, 1/2 phyllaries). Involucres campanulate. Phyllaries (± 13) ± 21, 7–10+ mm.


Phenology: Flowering mostly summer–fall, less commonly spring.
Habitat: Open, rocky or sandy sites, especially desert basins and washes
Elevation: 600–2000 m

Distribution

V20-1241-distribution-map.gif

Ariz., Calif., Nev., N.Mex., Tex., Utah, Mexico (Baja California)

Discussion

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

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
racemiform +, paniculiform +, corymbiform +  and cymiform +
indeterminate +  and determinate +
Theodore M. Barkley† +
(Greene) B. L. Turner & T. M. Barkley +
decurrent +
Senecio monoensis +
10 cm100 mm <br />0.1 m <br /> (12 cm120 mm <br />0.12 m <br />) +
narrowly linear;filiform +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
winged;nerved;ribbed +
barbellulate +  and smooth +
white +  and stramineous +
purplish +, reddish +, white +, ochroleucous +, yellow +  and white rarely reddish +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
angled +, 5-ribbed +, prismatic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Calif. +, Nev. +, N.Mex. +, Tex. +, Utah +  and Mexico (Baja California) +
600–2000 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open, rocky or sandy sites, especially desert basins and washes +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
glabrous +  and glabrate +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
campanulate +
petiolate +  and sessile +
distributed +
cauline +  and basal +
erect;recurved +
deltate +
dentate to pinnatifid +  and entire +
2-carpellate +
persistent +
Flowering mostly summer–fall, less commonly spring. +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
mostly oblong +  and lanceolate or linear +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
Illustrated +
appendaged +  and truncate +
papillate +
Senecio filicifolius +, Senecio lathyroides +  and Senecio pectinatus +
Senecio flaccidus var. monoensis +
Senecio flaccidus +
variety +
campanulate +
black +  and green +
toothed +  and entire +
perennial +, biennial +  and annual +
shrub +  and subshrub +