Senecio warnockii

Shinners

Sida 1: 379. 1964.

EndemicConservation concern
Treatment appears in FNA Volume 20. Treatment on page 559. Mentioned on page 548.

Subshrubs, 20–40 cm (taproots forming woody crowns). Herbage closely, unevenly lanate-floccose, glabrescent. Stems usually multiple (strict or nearly so, arching-erect). Leaves (often recurved and thickish-turgid) concentrated distally on stems; sessile or obscurely petiolate; blades narrowly linear to filiform (2–7 cm × 1 mm), bases ± linear, margins entire. Heads 3–10 in corymbiform arrays (involucres weakly campanulate). Calyculi 0 or of 3–5 bractlets (lengths less than 1/2 phyllaries). Phyllaries ± 13, 5–8 mm, tips green or minutely black. Ray-florets usually ± 8, rarely 0; corolla laminae 5–10 mm. Cypselae glabrous.


Phenology: Flowering fall (perhaps spring–summer).
Habitat: Open sites, gypseous soils
Elevation: 800–1500 m

Discussion

Of conservation concern.

Senecio warnockii is infrequently collected; additional study may show it to be an edaphic phase of S. flaccidus. The restriction to gypseous soils and the gross aspect combine to make it distinctive.

Selected References

None.

Lower Taxa

None.
... more about "Senecio warnockii"
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
indeterminate +  and determinate +
Theodore M. Barkley† +
Shinners +
decurrent +
narrowly linear;filiform +
winged;nerved;ribbed +
barbellulate +  and smooth +
white +  and stramineous +
purplish +, reddish +, white +, ochroleucous +, yellow +  and white rarely reddish +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
angled +, 5-ribbed +, prismatic +  and cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
N.Mex. +  and Tex. +
800–1500 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open sites, gypseous soils +
discoid +  and radiate +
indeterminate +
heterogamous +  and homogamous +
glabrescent +  and lanate-floccose +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
turbinate;campanulate +
petiolate +  and sessile +
cauline +  and basal +
erect;recurved +
deltate +
2-carpellate +
persistent +
Flowering fall (perhaps spring–summer). +
mostly oblong +  and lanceolate or linear +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
Endemic +  and Conservation concern +
appendaged +  and truncate +
papillate +
Compositae +
Senecio warnockii +
species +
campanulate +
black +  and green +
denticulate +  and serrate or toothed +
perennial +, biennial +  and annual +