Senecio fremontii var. fremontii

Endemic
Synonyms: Senecio occidentalis var. rotundatus
Treatment appears in FNA Volume 20. Treatment on page 564.
Revision as of 20:14, 29 July 2020 by imported>Volume Importer
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Plants mostly 1–2 dm. Stems arching upward. Leaves (± equally developed along stems) usually smaller than 4 × 2 cm, bases not clasping, margins toothed or subentire. Heads (1–) 3–5. Phyllaries (± 8) ± 13, (7–) 8–10 mm.


Phenology: Flowering summer.
Habitat: Talus slopes, rocky sites, subalpine and high coniferous associations
Elevation: 2500–3500 m

Distribution

V20-1259-distribution-map.gif

Alta., B.C., Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.

Discussion

Variety fremontii grows in the northern Rocky Mountains and interior ranges. Apparently, the plants intergrade locally with Senecio spartioides in the mountains of the Great Basin.

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
racemiform +, paniculiform +, corymbiform +  and cymiform +
indeterminate +  and determinate +
Theodore M. Barkley† +
Torrey & A. Gray +
less truncate +  and tapered +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
obovate;oblanceolate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
winged;nerved;ribbed +
usually lance-deltate;linear +
barbellulate +  and smooth +
white +  and stramineous +
purplish +, reddish +, white +, ochroleucous +, yellow +  and white rarely reddish +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
strigose-hirtellous +  and glabrous +
angled +, 5-ribbed +, prismatic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Alta. +, B.C. +, Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +  and Wyo. +
2500–3500 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Talus slopes, rocky sites, subalpine and high coniferous associations +
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 +
distributed +
4 cm40 mm <br />0.04 m <br /> (?) +
cauline +  and basal +
smaller +
2 cm20 mm <br />0.02 m <br /> (?) +
erect;recurved +
deltate +
dentate to pinnatifid +  and entire +
subentire +  and toothed +
2-carpellate +
persistent +
Flowering summer. +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
mostly oblong +  and lanceolate or linear +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Fl. N. Amer. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
appendaged +  and truncate +
papillate +
Senecio occidentalis var. rotundatus +
Senecio fremontii var. fremontii +
Senecio fremontii +
variety +
campanulate +
brownish +  and green +
denticulate +  and serrate or toothed +
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 m <br />) +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
100 cm1,000 mm <br />1 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +