Senecio aronicoides

de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 6: 426. 1838.

Endemic
Synonyms: Senecio leptolepis Greene Senecio rawsonianus Greene
Treatment appears in FNA Volume 20. Treatment on page 556. Mentioned on page 547.

Perennials (biennials?), 30–90 cm (caudices buttonlike, roots unbranched, fleshy-fibrous). Herbage loosely and sparsely arachnose to finely tomentose, unevenly glabrescent. Stems single. Leaves progressively reduced distally; petiolate; blades ovate or oblanceolate to oblong, 7–20 × 2–3 cm, bases broadly to narrowly tapered, margins repand-denticulate or sublaciniate to subentire (mid and distal leaves sessile, smaller, weakly clasping). Heads (6–) 15–30+ in corymbiform arrays. Calyculi 0 or of 1–3+ oblong to linear bractlets (seldom more than 1.5 mm). Phyllaries ± 8 or ± 13, 4–8 mm, tips green or black. Ray-florets 0 or 1–2; corolla laminae 4–7 mm. Cypselae glabrous. 2n = 40.


Phenology: Flowering spring–early summer.
Habitat: Dry or drying sites in open woodlands, upper foothills and montane forests
Elevation: 800–2500 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Senecio aronicoides"
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
indeterminate +  and determinate +
Theodore M. Barkley† +
de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
tapered +
7 cm70 mm <br />0.07 m <br /> (20 cm200 mm <br />0.2 m <br />) +
oblanceolate;oblong +
2cm;3cm +
winged;nerved;ribbed +
oblong;linear +
barbellulate +  and smooth +
white +  and stramineous +
purplish +, reddish +, white +, ochroleucous +, yellow +  and white rarely reddish +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
angled +, 5-ribbed +, prismatic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +  and Oreg. +
800–2500 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry or drying sites in open woodlands, upper foothills and montane forests +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
glabrescent +, sparsely arachnose +  and finely tomentose +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
turbinate;campanulate +
cauline +  and basal +
reduced +
erect;recurved +
deltate +
dentate to pinnatifid +  and entire +
sublaciniate +  and subentire +
2-carpellate +
persistent +
Flowering spring–early summer. +
mostly oblong +  and lanceolate or linear +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
appendaged +  and truncate +
papillate +
Senecio leptolepis +  and Senecio rawsonianus +
Senecio aronicoides +
species +
campanulate +
black +  and green +
denticulate +  and serrate or toothed +
30 cm300 mm <br />0.3 m <br /> (90 cm900 mm <br />0.9 m <br />) +
shrub +  and subshrub +