Tephroseris tundricola

(Tolmatchew) Holub

Folia Geobot. Phytotax. 8: 174. 1973.

Basionym: Senecio tundricola Tolmatchew Dokl. Akad. Nauk S.S.S.R. 1928: 266. 1928
Treatment appears in FNA Volume 20. Treatment on page 618. Mentioned on page 616.

Perennials, 5–15 cm (unevenly floccose-tomentose to glabrate, especially distal stems, adaxial leaf faces, and phyllaries; rhizomes weakly spreading or suberect). Stems single or loosely clustered. Leaves basal and cauline; petioles weakly winged (passing into blades); blades ovate to lanceolate, 3–5 × 0.5–1.5 cm, margins subentire to denticulate (cauline narrower, sessile, bractlike). Heads 1 (–4). Involucres ± abruptly contracted to peduncles. Phyllaries usually 21, green (tips sometimes purplish), 6–8 mm. Ray-florets usually 13; corolla laminae 9–12 mm. Disc-florets 30–50+; corollas yellow. Cypselae pubescent; pappi white. 2n = 48.


Phenology: Flowering Jul–Aug.
Habitat: Protected sites on talus and ridges
Elevation: 0–300 m

Discussion

In the flora area, Tephroseris tundricola is known only from the Bering Strait region. It is similar to T. lindstroemii; the two are treated in the same species in contemporary Russian floristic studies. Our plants are separable by the characters given in the key.

Selected References

None.

Lower Taxa

None.
... more about "Tephroseris tundricola"
not tailed +, rounded +  and obtuse +
papillate +
rounded-truncate +
scarious +
usually ovate +  and lance-linear +
indeterminate +  and determinate +
Theodore M. Barkley† +  and David F. Murray +
(Tolmatchew) Holub +
decurrent +
Senecio tundricola +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
ovate;lanceolate +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
winged;nerved;ribbed +
brownish +, whitish +  and white +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
nerved +  and 10-ribbed +
cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Alaskaw +  and ne Asia (Russia) +
0–300 m +
glabrate +, villous +, tomentose +, lanate +, floccose +  and arachnose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Protected sites on talus and ridges +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate;turbinate +
cauline +  and basal +
recurved;erect +
lanceolate +  and lance-linear +
subpinnatifid +
dentate +  and entire +
subentire +  and denticulate +
2-carpellate +
persistent +
Flowering Jul–Aug. +
lance-linear +  and lanceolate or oblong +
unequal +  and subequal +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Folia Geobot. Phytotax. +
bearing subulate enations +, hairy +  and bristly +
dome--shaped;flat +
exalbuminous +
appendaged +  and truncate +
papillate +
Compositae +
Tephroseris tundricola +
Tephroseris +
species +
campanulate +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
vine +, tree +, shrub +  and subshrub +