Heterotheca stenophylla (A.Gray) Shinners

Stiffleaf false goldenaster (en)

Species

Angiosperms > Asterales > Asteraceae > Heterotheca

Characteristics

Perennials 18–46(–65) cm; taprooted, sometimes spreading by rhizomes, forming additional clumps. Stems 1–50+, ascending to erect (sometimes brown, or reddish to dark brown, often proximally brittle), often short-branched in distal 1 / 2 , sparsely to densely long-hispid and strigose (hairs often broken off, especially proximally), sometimes becoming moderately hairy and densely stipitate-glandular distally (axillary fascicles of leaves often present). Leaves generally ascending, congested; proximal cauline petiolate, blades linear-oblanceolate, (15–)24–42 × (2–)3–6(–8.5) mm, bases cuneate to attenuate, margins flat, entire, strigoso-ciliate, proximally long-hispido-strigose, apices acute, faces sparsely to moderately hispido-strigose and sparsely to moderately stipitate-glandular, or moderately to densely hispido-strigose and eglandular; distal sessile (bright green to grayish green), blades linear-oblanceolate to narrowly oblanceolate (rarely broader), (9–)16.5–30 × (1.5–)2.2–4.3(–6) mm, usually little reduced distally (often surpassing heads), bases cuneate to attenuate, margins flat, often abundantly long-hispido-strigose along whole, apices acute, sometime mucronulate to white-spinulose, faces sparsely to moderately densely hispido-strigose (2–65 hairs/mm²; hairs often scabrous, ± pustulate), usually eglandular, sometimes sparsely to densely stipitate-glandular. Heads (1–)2–16(–30), in corymbiform arrays, branches ascending. Peduncles 2–16 mm, sparsely to densely hispido-strigose, eglandular or sparsely to densely stipitate-glandular; bracts 1–3, proximal linear-oblanceolate to oblanceolate, sometimes little reduced distally, leaflike. Involucres cylindro-turbinate to narrowly campanulate, (4.5–)5.5–8(–11) mm. Phyllaries in 5–6 series, unequal (outer 1 / 5 – 1 / 4 length of inner), narrowly triangular-lanceolate to lanceolate, margins scarious, faces sparsely to moderately strigose, sparsely to densely stipitate-glandular. Ray florets 10–24(–36); laminae (5–)7–11.5(–16.5) × 0.7–1.5(–2.1) mm. Disc florets (12–) 23–55(–70); corollas slightly ampliate, 4.5–7 mm, throats glabrous, lobes 0.4–0.9 mm, lobes sparsely pilose (hairs on lobes 0.1–0.25 mm). Cypselae monomorphic, obconic, compressed, 1.5–2.5(–3) mm, ribs 6–10 (sometimes brownish), faces sparsely to moderately strigose; pappi off-white, outer of linear scales 0.25–0.5 mm, inner of 25–40 bristles (4–)5–6.5(–7.5) mm, longest weakly clavate. 2n = 18, 36.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.18 - 0.46
Root system rhizome 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) 4-9

Usage

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

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Heterotheca stenophylla world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:121477-2
WFO ID wfo-0000007936
COL ID 6LTLC
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Heterotheca stenophylla Chrysopsis stenophylla Chrysopsis scabrifolia Heterotheca stenophylla var. stenophylla Chrysopsis hispida var. stenophylla Chrysopsis villosa var. stenophylla

Lower taxons

Heterotheca stenophylla var. angustifolia