Heterotheca rutteri (Rothr.) Shinners

Rutter's false goldenaster (en)

Species

Angiosperms > Asterales > Asteraceae > Heterotheca

Characteristics

Perennials, 30–55 cm; taprooted. Stems 1–10+, ascending to erect (sometimes reddish brown), moderately to densely strigose, sparsely to mederately long-hirsute, sometimes proximally glabrescent with age, eglandular or sparsely stipitate-glandular beneath hairs. Leaves: proximal cauline subpetiolate to sessile, blades oblanceolate, 125–250 × 4–9 mm, bases attenuate to rounded, margins flat or weakly undulate, entire, strigoso-ciliate, a few longer hispid cilia near bases, apices acute, faces densely long-strigose (silvery white); distal sessile, blades narrowly ovate to lanceolate, 17–25 × 4.5–8.5 mm, reduced distally, bases narrowly to broadly cuneate, margins entire, large spreading hispido-strigose cilia numerous, apices sharply acute, mucronate-spinulose, faces densely long-strigose, sparsely stipitate-glandular. Heads 4–10, in open corymbiform arrays. Peduncles 10–60+ mm, strigoso-canescent, stipitate-glandular; bracts 6–10, proximal lanceolate, leafy, strigose, becoming linear, less hairy, and more glandular near heads, 1–4+ larger, lanceolate to narrowly ovate, leafy bracts (10–15 × 1.8–4.5 mm; bases sometimes attenuate to winged subpetiolate) subtending heads. Involucres cylindric to campanulate, 8.5–10.5 mm. Phyllaries in 4–5 series, lanceolate to triangular-lanceolate, unequal, scarious, moderately to densely strigose, sparsely glandular. Ray florets 15–35; laminae 12–16 × 1–2 mm. Disc florets 23–65; corollas barely ampliate, 6.5–8.3 mm, lobes 0.6–0.8 mm, lobes glabrous or sparsely hairy (0.1–0.5 mm). Cypselae monomorphic, obconic, compressed, 3–4 mm, ribs 7–10, sparsely moderately densely strigose; pappi off-white, outer of linear scales 0.5–1 mm, inner of 35–45 attenuate bristles 7–9 mm, longest attenuate. 2n = 18.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 0.55
Root system tap-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 1-5
Soil texture 3-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by divisions or seedlings.
Mode divisions seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Heterotheca rutteri unspecified picture

Distribution

Heterotheca rutteri world distribution map, present in Mexico and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:121472-2
WFO ID wfo-0000081136
COL ID 6LTLF
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Chrysopsis rutteri Heterotheca rutteri Chrysopsis villosa var. rutteri Chrysopsis foliosa var. sericeovillosissima