Senecio ertterae

T. M. Barkley in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl., ser. 2, 10: 124. 1978.

EndemicConservation concern
Treatment appears in FNA Volume 20. Treatment on page 561. Mentioned on page 548.

Annuals, 20–50 (–60+) cm (taproots relatively thin, twisted). Herbage (± turgid or subsucculent) unevenly villous-tomentose, glabrescent. Stems usually single, rarely clustered. Leaves progressively reduced distally (basal usually withering before flowering); petiolate (petioles winged); blades oblanceolate to spatulate, 4–7 × 1.5–3 cm, bases tapered, margins incised (distal leaves sessile, bractlike). Heads 6–10 (–20) in cymiform arrays. Calyculi of 1–5+ linear to subulate bractlets (to 4 mm). Phyllaries ± 13, 6–7 mm, tips green. Ray-florets ± 8 (± 13?); corolla laminae 5–6 mm. Cypselae usually hairy (especially on angles), sometimes glabrous. 2n = 40.


Phenology: Flowering late summer–early fall.
Habitat: Talus slopes of greenish yellow ash tuff
Elevation: 900–1200 m

Discussion

Of conservation concern.

Senecio erterrae is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.
... more about "Senecio ertterae"
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
indeterminate +  and determinate +
Theodore M. Barkley† +
T. M. Barkley in N. L. Britton et al. +
tapered +
4 cm40 mm <br />0.04 m <br /> (7 cm70 mm <br />0.07 m <br />) +
oblanceolate;spatulate +
1.5cm;3cm +
winged;nerved;ribbed +
linear;subulate +
barbellulate +  and smooth +
white +  and stramineous +
purplish +, reddish +, white +, ochroleucous +, yellow +  and white rarely reddish +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
glabrous +  and hairy +
angled +, 5-ribbed +, prismatic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
900–1200 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Talus slopes of greenish yellow ash tuff +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
glabrescent +  and villous-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 +
2-carpellate +
persistent +
Flowering late summer–early fall. +
mostly oblong +  and lanceolate or linear +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
in N. L. Britton et al., N. Amer. Fl., ser. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
Endemic +  and Conservation concern +
appendaged +  and truncate +
papillate +
Compositae +
Senecio ertterae +
species +
campanulate +
denticulate +  and serrate or toothed +
50 cm500 mm <br />0.5 m <br /> (60 cm600 mm <br />0.6 m <br />) +
20 cm200 mm <br />0.2 m <br /> (50 cm500 mm <br />0.5 m <br />) +
shrub +  and subshrub +