Senecio lyonii

A. Gray in A. Gray et al.

in A. Gray et al., Syn. Fl. N. Amer. ed. 2, 1(2): 454. 1886.

Conservation concern
Treatment appears in FNA Volume 20. Treatment on page 560. Mentioned on page 548.

Subshrubs or shrubs, (20–) 40–150 cm (taproots woody). Herbage sparsely hairy, unevenly glabrate (usually with persistent tomentum in leaf-axils and on abaxial leaf faces). Stems usually multiple (arching upwards). Leaves evenly distributed (proximal withering before flowering); sessile or obscurely petiolate; blades ± oblong or elliptic, (4–) 6–10 (–12) × 1.5–3 cm (1–2-pinnatifid, lobes ± linear, 1–2 mm wide), bases ± linear, ultimate margins entire. Heads 4–12 in cymiform arrays (involucres campanulate, 8–15 mm diam.). Calyculi 0 or of 1–3+ (inconspicuous) bractlets. Phyllaries (± 13) ± 21, (5–) 6–8 mm, tips minutely black. Ray-florets ± 13; corolla laminae 8–10 mm. Cypselae hairy. 2n = 40.


Phenology: Flowering spring.
Habitat: Ocean bluffs, open hillsides
Elevation: 0–500 m

Distribution

V20-1245-distribution-map.gif

Calif., Mexico (Baja California)

Discussion

Of conservation concern.

Senecio lyonii is known from the Channel Islands (off the coast of southern California) and south.

Selected References

None.

Lower Taxa

None.
... more about "Senecio lyonii"
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
indeterminate +  and determinate +
Theodore M. Barkley† +
A. Gray in A. Gray et al. +
decurrent +
10 cm100 mm <br />0.1 m <br /> (12 cm120 mm <br />0.12 m <br />) +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
1.5cm;3cm +
winged;nerved;ribbed +
barbellulate +  and smooth +
white +  and stramineous +
purplish +, reddish +, white +, ochroleucous +, yellow +  and white rarely reddish +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
angled +, 5-ribbed +, prismatic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +  and Mexico (Baja California) +
0–500 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Ocean bluffs, open hillsides +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
glabrate +  and hairy +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
turbinate;campanulate +
petiolate +  and sessile +
distributed +
cauline +  and basal +
erect;recurved +
deltate +
dentate to pinnatifid +  and entire +
2-carpellate +
persistent +
Flowering spring. +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
mostly oblong +  and lanceolate or linear +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
in A. Gray et al., Syn. Fl. N. Amer. ed. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
Conservation concern +
appendaged +  and truncate +
papillate +
Compositae +
Senecio lyonii +
species +
campanulate +
denticulate +  and serrate or toothed +
perennial +, biennial +  and annual +
shrub +  and subshrub +