Packera pseudaurea var. flavula

(Greene) Trock & T. M. Barkley

Sida 18: 386. 1998.

Endemic
Basionym: Senecio flavulus Greene Pittonia 4: 108. 1900
Synonyms: Senecio pseudaureus var. flavulus (Greene) Greenman
Treatment appears in FNA Volume 20. Treatment on page 597.

Plants 20–40+ cm (slender, rarely stout). Basal leaves: petiole lengths equaling blades; blades broadly ovate, 20–40 × 20–30 mm, margins usually bluntly dentate or denticulate, rarely sharply dentate. Heads 5–12 in congested, cymiform arrays. Phyllaries 3–5 mm. 2n = 46.


Phenology: Flowering late May–early Jul.
Habitat: Damp soils, stream banks, woodlands, meadows
Elevation: 1800–2700 m

Discussion

Variety flavula is known from southern Wyoming through central Colorado to northern New Mexico. Its habitats are similar to those of var. pseudaurea; its aspect resembles that of var. semicordata.

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
indeterminate +  and determinate +
Debra K. Trock +
(Greene) Trock & T. M. Barkley +
truncate +  and subcordate or obtuse +
Senecio flavulus +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
winged;nerved;ribbed +
inconspicuous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
pale-yellow +  and deep orange-red +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Colo. +, N.Mex. +  and Wyo. +
1800–2700 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Damp soils, stream banks, woodlands, meadows +
discoid +  and radiate +
in compact or congested to open corymbiform cymiform or subumbelliform , , , arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate;cylindric +
sessile +  and petiolate +
cauline +  and basal +
erect;recurved +
deltate +
denticulate +  and dentate +
2-carpellate +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
Flowering late May–early Jul. +
linear +  and ensiform +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
exalbuminous +
prostrate +  and ascending +
tomentose +  and glabrous +
2 +  and 4 +
appendaged +  and truncate +
papillate +
Senecio pseudaureus var. flavulus +
Packera pseudaurea var. flavula +
Packera pseudaurea +
variety +
campanulate +
serrate +  and denticulate +
20 cm200 mm <br />0.2 m <br /> (70 cm700 mm <br />0.7 m <br />) +
23 +, 22 +  and 20 +