Senecio aphanactis

Greene

Pittonia 1: 220. 1888.

Conservation concern
Treatment appears in FNA Volume 20. Treatment on page 563. Mentioned on page 548.

Annuals, 5–20+ cm (taproots relatively short and thin). Herbage glabrous or sparsely tomentose (especially distally). Stems usually 1 (relatively thin, delicate). Leaves evenly distributed; sessile; blades oblanceolate to lance-linear, 2–4 × 0.5–1 cm, bases sometimes weakly clasping, margins usually subpinnate to dentate, sometimes subentire (distal leaves bractlike). Heads 4–10+ in open, cymiform arrays. Calyculi 0 or of 1–3+ lance-deltate bractlets. Phyllaries ± 8 or ± 13, 5–6 mm, tips greenish. Ray-florets 0 or 1–5; corolla laminae 0.5–1+ mm (barely surpassing phyllaries, heads perhaps technically disciform). Cypselae densely hairy. 2n = 40.


Phenology: Flowering late winter–spring.
Habitat: Dry, open ground, especially alkaline flats
Elevation: 10–400 m

Distribution

V20-1256-distribution-map.gif

Calif., Mexico (Baja California)

Discussion

Of conservation concern.

Selected References

None.

Lower Taxa

None.
... more about "Senecio aphanactis"
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
cymiform +  and open +
indeterminate +  and determinate +
Theodore M. Barkley† +
Greene +
decurrent +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
oblanceolate;lance-linear +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
winged;nerved;ribbed +
lance-deltate +
barbellulate +  and smooth +
white +  and stramineous +
purplish +, reddish +, white +, ochroleucous +, yellow +  and white rarely reddish +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
angled +, 5-ribbed +, prismatic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +  and Mexico (Baja California) +
10–400 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry, open ground, especially alkaline flats +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
tomentose +  and glabrous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
turbinate;campanulate +
distributed +
cauline +  and basal +
erect;recurved +
deltate +
subpinnate to dentate +  and subpinnate +
dentate to pinnatifid +  and entire +
subentire +
2-carpellate +
persistent +
Flowering late winter–spring. +
mostly oblong +  and lanceolate or linear +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
Conservation concern +
appendaged +  and truncate +
papillate +
Compositae +
Senecio aphanactis +
species +
campanulate +
denticulate +  and serrate or toothed +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
100 cm1,000 mm <br />1 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
shrub +  and subshrub +