Senecio flaccidus var. douglasii

(de Candolle) B. L. Turner & T. M. Barkley

Phytologia 69: 52. 1990.

Basionym: Senecio douglasii de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 6: 429. 1838
Synonyms: Senecio douglasii var. tularensis Munz
Treatment appears in FNA Volume 20. Treatment on page 559. Mentioned on page 558.

Herbage usually ± tomentose (usually with persistent, uneven grayish tomentum), sometimes unevenly glabrescent. Calyculi: bractlets well developed (lengths 1/3–1/2 phyllaries). Involucres usually campanulate. Phyllaries (± 13) ± 21, 7–10 (–12) mm.


Phenology: Flowering mostly summer–fall (year around in favorable sites).
Habitat: Dry, open, sandy or rocky sites, usually areas with continual mild disturbance
Elevation: 100–1500 m

Distribution

V20-1240-distribution-map.gif

Calif., Mexico (Baja California)

Discussion

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† +
(de Candolle) B. L. Turner & T. M. Barkley +
decurrent +
Senecio douglasii +
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 +
Calif. +  and Mexico (Baja California) +
100–1500 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry, open, sandy or rocky sites, usually areas with continual mild disturbance +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
glabrescent +  and tomentose +
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 (year around in favorable sites). +
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 douglasii var. tularensis +
Senecio flaccidus var. douglasii +
Senecio flaccidus +
variety +
campanulate +
black +  and green +
toothed +  and entire +
perennial +, biennial +  and annual +
shrub +  and subshrub +