Heterotheca viscida

(A. Gray) V. L. Harms

Rhodora 70: 302. 1968.

Common names: Cliff goldenaster
Endemic
Basionym: Chrysopsis villosa var. viscida A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 123. 1884
Synonyms: Chrysopsis viscida (A. Gray) Greene
Treatment appears in FNA Volume 20. Treatment on page 241. Mentioned on page 231, 233, 244, 249.

Perennials, 13–42 cm; taprooted. Stems 1–15+, ascending-erect (sometimes brown), appressed-strigose, mostly proximally long-hirsute, moderately to densely stipitate-glandular. Leaves: proximal cauline petiolate, blades ovate to oblanceolate, 23–51 × 5–15 mm, bases cuneate, margins entire, hispido-strigoso-ciliate (a few much longer spreading cilia near bases), apices acute to obtuse, mucronate, faces sparsely hispido-strigose, moderately to densely stipitate-glandular; distal sessile, blades lanceolate to ovate, 10–30 × 5–12.5 mm (sometimes slightly clasping, less so distally), margins flat or only remotely undulate, apices obtuse to acute. Heads 1–7, borne singly or in open, corymbiform arrays. Peduncles 10–36 mm, sparsely to moderately hispid, moderately to densely stipitate-glandular; bracts 0–2, linear-oblanceolate, usually greatly reduced. Involucres campanulate to hemispheric, 7.5–11 mm. Phyllaries in 4–5 series, lanceolate, unequal (outer lengths 1/5–1/4 inner), margins sometimes anthocyanic apically, faces sparsely strigose, stipitate-glandular. Ray-florets 9–20; laminae 10–13 × 0.7–2.5 mm. Disc-florets 16–76 (–98); corollas ± ampliate, 5–7.5 mm, lobes 0.5–0.75 mm, sparsely hairy (0–0.25 mm). Cypselae monomorphic, obconic, compressed, 1.6–2.5 mm, ribs 4–7, faces moderately strigose; pappi off-white, outer of linear scales 0.2–1 mm, inner of 25–40 bristles 5–7 mm, longest weakly clavate. 2n = 18.


Phenology: Flowering May–Jul(–Oct).
Habitat: Clefts and crevices in cliffs and dry ledges, rocky slopes, in oak-manzanita chaparral, ponderosa pine and gambel oak woods, on igneous rocks and soils, rhyolite tuff
Elevation: 1500–3000 m

Discussion

Heterotheca viscida grows in the mountains of southeastern Arizona, southwestern New Mexico, and trans-Pecos Texas. Plants from Texas generally have oblanceolate leaves and smaller heads and can be similar to forms of H. fulcrata var. arizonica and var. senilis. The species typically blooms earlier in the season than H. fulcrata.

Selected References

None.

Lower Taxa

None.

"[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property.

... more about "Heterotheca viscida"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
corymbiform +  and open +
indeterminate +  and determinate +
John C. Semple +
(A. Gray) V. L. Harms +
cuneate +
Chrysopsis villosa var. viscida +
compound +  and simple +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
lanceolate;ovate +
5mm;12.5mm +
rugulose +  and muricate +
linear-oblanceolate +
reduced +
barbellulate +  and barbellate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
rhizomatous +  and taprooted +
Cliff goldenaster +
not 2-lipped +  and actinomorphic +
ampliate +
0.5 cm5 mm <br />0.005 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
compressed +  and obconic +
fertile +  and bisexual +
Ariz. +, N.Mex. +  and Tex. +
1500–3000 m +
strigose +, stipitate-glandular +, sparsely hispido-strigose +  and moderately densely stipitate-glandular +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Clefts and crevices in cliffs and dry ledges, rocky slopes, in oak-manzanita chaparral, ponderosa pine and gambel oak woods, on igneous rocks and soils, rhyolite tuff +
paniculiform +
in open , corymbiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
tan;rusty brown +
attenuate +  and clavate +
campanulate;hemispheric +
0.75 cm7.5 mm <br />0.0075 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
10mm;13mm +
0.7mm;2.5mm +
sessile +  and petiolate +
cauline +  and basal +
erect;spreading +
lanceolate +, triangular +  and deltate +
anthocyanic +
hispido-strigoso-ciliate +
undulate +  and flat +
2-carpellate +
in 3 +  and 4 series +
stipitate-glandular +  and hispid +
1 cm10 mm <br />0.01 m <br /> (3.6 cm36 mm <br />0.036 m <br />) +
Flowering May–Jul(–Oct). +
lanceolate +
ovate-oblanceolate +
bearing subulate enations +, hairy +  and bristly +
subulate;convex +
4 +  and 7 +
3 +  and 40 +
linear +  and linear-lanceolate or triangular +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
exalbuminous +
ascending-erect +
1 +  and 15 +
appendaged +  and truncate +
papillate +  and smooth +
Chrysopsis viscida +
Heterotheca viscida +
Heterotheca +
species +
60 cm600 mm <br />0.6 m <br /> (200 cm2,000 mm <br />2 m <br />) +
13 cm130 mm <br />0.13 m <br /> (42 cm420 mm <br />0.42 m <br />) +
tree +, shrub +  and subshrub +