Senecio integerrimus var. scribneri

(Rydberg) T. M. Barkley

Leafl. W. Bot. 9: 109. 1960.

EndemicConservation concern
Basionym: Senecio scribneri Rydberg Mem. New York Bot. Gard. 1: 441. 1900
Treatment appears in FNA Volume 20. Treatment on page 557. Mentioned on page 556.

Herbage usually villous, sometimes arachnose or tomentose, at flowering. Leaves: basal and proximal cauline ± petiolate; blades (cauline) oblong or lanceolate to sublinear (6–10 × 0.5–2 cm). Heads 3–6 (–16+). Phyllaries ± linear, 10–15 mm, tips usually green, rarely black. Ray-florets probably mostly 5; corollas yellow, laminae 12–15 mm.


Phenology: Flowering spring.
Habitat: Plains and open foothills
Elevation: 300–1600 m

Discussion

Of conservation concern.

Variety scribneri is poorly known and seldom collected. It is distinguished by its relatively larger heads and narrower leaves and its indument (in a region where var. integerrimus is notably glabrate).

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
indeterminate +  and determinate +
Theodore M. Barkley† +
(Rydberg) T. M. Barkley +
less tapered or truncate +  and cordate +
Senecio scribneri +
6 cm60 mm <br />0.06 m <br /> (25 cm250 mm <br />0.25 m <br />) +
lanceolate;sublinear +
1cm;6cm +
winged;nerved;ribbed +
linear;filiform +
barbellulate +  and smooth +
white +  and stramineous +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
hirtellous +  and glabrous +
angled +, 5-ribbed +, prismatic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Sask. +  and Mont. +
300–1600 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Plains and open foothills +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
tomentose +, arachnose +  and villous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
turbinate;campanulate +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
cauline +, proximal +  and basal +
reduced +
erect;recurved +
deltate +
dentate +  and entire +
2-carpellate +
persistent +
Flowering spring. +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
mostly oblong +  and lanceolate or linear +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Leafl. W. Bot. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
Endemic +  and Conservation concern +
appendaged +  and truncate +
papillate +
Compositae +
Senecio integerrimus var. scribneri +
Senecio integerrimus +
variety +
campanulate +
black +  and green +
denticulate +  and serrate or toothed +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
20 cm200 mm <br />0.2 m <br /> (70 cm700 mm <br />0.7 m <br />) +
shrub +  and subshrub +