Senecio astephanus

Greene

Pittonia 1: 174. 1888.

EndemicConservation concern
Treatment appears in FNA Volume 20. Treatment on page 553. Mentioned on page 547.

Perennials, 40–100 cm (caudices unknown). Herbage unevenly floccose-lanate or tomentose, glabrescent. Stems single. Leaves progressively reduced distally; petiolate; blades elliptic-ovate to lanceolate, 10–20 (–30?) × 3–7+ cm, bases tapered, margins dentate to denticulate (teeth cartilaginous; mid leaves similar, sessile, smaller; distal leaves bractlike). Heads 10–20+ in loose or congested, cymiform arrays. Calyculi of 5–8+ lance-linear to filiform bractlets (lengths 1/3–7/8 phyllaries). Phyllaries ± 21, 7–8 mm, tips greenish. Ray-florets 0. Cypselae glabrous. 2n = 40.


Phenology: Flowering spring.
Habitat: Steep, rocky slopes
Elevation: 400–1500 m

Discussion

Of conservation concern.

Senecio astephanus is collected infrequently.

Selected References

None.

Lower Taxa

None.
... more about "Senecio astephanus"
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
cymiform +, congested +  and loose +
indeterminate +  and determinate +
Theodore M. Barkley† +
Greene +
tapered +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
elliptic-ovate;lanceolate +
3cm;7cm +
winged;nerved;ribbed +
lance-linear;filiform +
barbellulate +  and smooth +
white +  and stramineous +
purplish +, reddish +, white +, ochroleucous +, yellow +  and white rarely reddish +
angled +, 5-ribbed +, prismatic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
400–1500 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Steep, rocky slopes +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
glabrescent +, tomentose +  and floccose-lanate +
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 +
dentate +  and denticulate +
2-carpellate +
persistent +
Flowering spring. +
mostly oblong +  and lanceolate or linear +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
Endemic +  and Conservation concern +
appendaged +  and truncate +
papillate +
Compositae +
Senecio astephanus +
species +
campanulate +
denticulate +  and serrate or toothed +
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +
shrub +  and subshrub +