Sphaeromeria ruthiae

A. H. Holmgren

Brittonia 28: 257, fig. 1. 1976.

Common names: Zion chickensage or tansy
Endemic
Treatment appears in FNA Volume 19. Treatment on page 501. Mentioned on page 499.

Subshrubs, 30–60 (–70) cm (aromatic). Stems erect to ± decumbent at bases, tomentose. Leaves mostly cauline; blades (20–90 mm) 1-pinnately lobed to 3-fid (proximal) or entire (distal), faces tomentose-canescent and gland-dotted. Heads (8–) 10–30 (–60) in paniculiform arrays (longer than wide). Involucres 4–4.5 (–5) mm. Phyllaries 12–16, densely tomentose. Cypselae 1.5–2 mm (obscurely 10-ribbed, apices with thickened rims, faces gland-dotted).


Phenology: Flowering Sep.
Habitat: Crevices in sandstone cliffs
Elevation: 1900–2000 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Sphaeromeria ruthiae"
not tailed +  and obtuse +
scarious +
paniculiform +
indeterminate +  and determinate +
Timothy K. Lowrey +  and Leila M. Shultz +
A. H. Holmgren +
decurrent +
compound +  and simple +
1-pinnately lobed;3-fid or entire +
Zion chickensage or tansy +
zygomorphic +, actinomorphic +  and (3-)5-merous +
bright-yellow +
winged +  and monomorphic +
obovoid +  and obconic +
fertile +  and bisexual +
fertile +  and bisexual +
1900–2000 m +
gland-dotted +
tomentose-canescent +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Crevices in sandstone cliffs +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
hemispheric;campanulate +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
sessile +  and petiolate +
deltate +
entire +  and dentate +
2-carpellate +
persistent +
Flowering Sep. +
12 +  and 16 +
unequal +  and subequal +
styliferous +, neuter +  and pistillate +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
conic;nearly flat +
5 +  and 10 +
exalbuminous +
gland-dotted +
erect +  and more or less decumbent +
1 +  and 5 +
appendaged +  and truncate +
papillate +
Compositae +
Sphaeromeria ruthiae +
Sphaeromeria +
species +
campanulate +
cylindric +
60 cm600 mm <br />0.6 m <br /> (70 cm700 mm <br />0.7 m <br />) +
5 cm50 mm <br />0.05 m <br /> (60 cm600 mm <br />0.6 m <br />) +
60 cm600 mm <br />0.6 m <br /> (70 cm700 mm <br />0.7 m <br />) +