Hymenoxys subintegra Cockerell

Arizona rubberweed (en)

Species

Angiosperms > Asterales > Asteraceae > Hymenoxys

Characteristics

Biennials or perennials, 30–60 cm (monocarpic; sometimes with sparingly branched, woody caudices). Stems 1(–5), green through­out or sometimes purple-red-tinted proximally, branched distally, usually densely sericeous. Leaves: blades simple or lobed (lobes 3), usually densely sericeous, gland-dotted; mid leaves simple or lobed (lobes 3, terminal lobes 1.8–3.5 mm wide). Heads 10–85+ per plant, in paniculiform to corymbiform arrays. Peduncles 3–9 cm, usually densely sericeous. Involucres hemispheric to campanulate, 8–10 × 10–13 mm. Phyllaries in 2 series, unequal; outer 10–14(–18), basally connate 1/4–1/2 their lengths, lanceolate, obovate, or ovate 5–7 mm, apices acuminate to acute; inner phyllaries 13–16(–22), obovate, 4–5 mm, apices mucronate. Ray florets 10–16; corollas yellow, 10–15 × 4.5–6.5 mm. Disc florets 50–100+; corollas 3.5–4 mm. Cypselae narrowly obpyramidal, 2.1–3 mm; pappi of 5(–6) obovate, aristate scales 2.5–3 mm. 2n = 30.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 0.6
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Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
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Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
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Usage

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

Cultivation

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

Distribution

Hymenoxys subintegra world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:126037-2
WFO ID wfo-0000019720
COL ID 3NLNV
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Hymenoxys subintegra Actinea subintegra