Senecio rapifolius

Nuttall

Trans. Amer. Philos. Soc., n. s. 7: 409. 1841.

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

Perennials, (20–) 30–60 cm (rhizomes branched, spreading or suberect). Herbage (unevenly purple-tinged, often glaucous) glabrous. Stems 1– (2–3). Leaves progressively reduced distally; petiolate; blades ovate to oblanceolate, 4–8 (–9+) × (2–) 3–5 cm, bases tapered, margins dentate to incised-dentate (some denticles callous; mid leaves similar, smaller, ± clasping; distal leaves bractlike). Heads 25–60+ in cymiform clusters of 3–12. Calyculi 0 or of 1–3+ lance-deltate to lance-linear bractlets (mostly less than 1 mm). Phyllaries (± 5) ± 8, 3–4 (–5) mm, tips green or brownish. Ray-florets 0. Cypselae glabrous. 2n = 40.


Phenology: Flowering late summer–early fall.
Habitat: Rocky hillsides and cliffs in coniferous wooded areas
Elevation: 1800–2800 m

Distribution

V20-1222-distribution-map.gif

Colo., Idaho, S.Dak., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Senecio rapifolius"
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
racemiform +, paniculiform +, corymbiform +  and cymiform +
indeterminate +  and determinate +
Theodore M. Barkley† +
Nuttall +
tapered +
8 cm80 mm <br />0.08 m <br /> (9 cm90 mm <br />0.09 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
ovate;oblanceolate +
3cm;5cm +
winged;nerved;ribbed +
lance-deltate;lance-linear +
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 +
Colo. +, Idaho +, S.Dak. +  and Wyo. +
1800–2800 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky hillsides and cliffs in coniferous wooded areas +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
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 +  and incised-dentate +
dentate to pinnatifid +  and entire +
2-carpellate +
persistent +
Flowering late summer–early fall. +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
mostly oblong +  and lanceolate or linear +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Trans. Amer. Philos. Soc., n. s. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
2 (?) +  and 3 (?) +
appendaged +  and truncate +
papillate +
Compositae +
Senecio rapifolius +
species +
campanulate +
brownish +  and green +
denticulate +  and serrate or toothed +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
30 cm300 mm <br />0.3 m <br /> (60 cm600 mm <br />0.6 m <br />) +
shrub +  and subshrub +