Packera pseudaurea var. semicordata

(Mackenzie & Bush) Trock & T. M. Barkley

Sida 18: 386. 1998.

Endemic
Basionym: Senecio semicordatus Mackenzie & Bush Rep. (Annual) Missouri Bot. Gard. 16: 107. 1905
Synonyms: Senecio pseudaureus var. semicordatus (Mackenzie & Bush) T. M. Barkley
Treatment appears in FNA Volume 20. Treatment on page 597.

Plants 20–40+ cm (slender). Basal leaves: petiole lengths 1.5–2 times blades; blades broadly lanceolate to ovate, 20–40 × 10–20 mm, margins crenate. Heads 6–12 in open or slightly congested, corymbiform or cymiform arrays. Phyllaries 4–6 mm. 2n = 88, 126, 138.


Phenology: Flowering early Apr–mid Jun.
Habitat: Damp areas and open prairies
Elevation: 300–1500 m

Distribution

V20-1338-distribution-map.gif

Iowa, Kans., Minn., Mo., Nebr., N.Dak., S.Dak.

Discussion

Variety semicordata resembles var. flavula; it grows in open prairies.

Selected References

None.

Lower Taxa

None.

"-2timesblades" is not declared as a valid unit of measurement for this property.

138 +, 126 +  and 88 +
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
cymiform +, corymbiform +, congested +  and open +
indeterminate +  and determinate +
Debra K. Trock +
(Mackenzie & Bush) Trock & T. M. Barkley +
truncate +  and subcordate or obtuse +
Senecio semicordatus +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
broadly lanceolate;ovate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 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 +
Iowa +, Kans. +, Minn. +, Mo. +, Nebr. +, N.Dak. +  and S.Dak. +
300–1500 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Damp areas and open prairies +
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 +
2-carpellate +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
Flowering early Apr–mid Jun. +
linear +  and ensiform +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 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. semicordatus +
Packera pseudaurea var. semicordata +
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 +