Grindelia arizonica A.Gray

Arizona gumweed (en)

Species

Angiosperms > Asterales > Asteraceae > Grindelia

Characteristics

Perennials, (10–)25–70 cm. Stems erect, stramineous to reddish, glabrous. Cauline leaf blades oblong, spatulate, or oblanceolate to linear, 15–45(–85) mm, lengths mostly 3–8 times widths, bases ± cuneate, margins serrate (teeth from bases to apices or mostly toward apices, apiculate to setose), entire, or (proximal leaves) pinnately lobed to coarsely toothed, apices acute, faces glabrous (or scabridulous near margins), sparsely, or not at all, gland-dotted. Heads usually in corymbiform to paniculiform arrays, rarely borne singly. Involucres usually campanulate to obconic, sometimes hemispheric, 4–11 × 8–17 mm. Phyllaries in 4–6 series, linear to ± lanceolate, usually appressed, sometimes weakly reflexed or spreading, apices slightly recurved to straight, subulate or acuminate to deltate, slightly to strongly resinous. Ray florets 0 or 8–26; laminae (5–)7–10 mm. Cypselae stramineous to brown, 2.5–4 mm, apices coronate or knobby, faces striate to furrowed; pappi of 2–4 straight or weakly contorted, smooth setiform awns or subulate scales 2–5 mm, shorter than disc corollas. 2n = 12.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.25 - 0.7
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 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 5-10

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

Grindelia arizonica world distribution map, present in Mexico and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:314749-2
WFO ID wfo-0000032979
COL ID 6KSS2
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Grindelia microcephala Grindelia arizonica Grindelia laciniata Grindelia neomexicana Grindelia arizonica var. stenophylla Grindelia scabra var. neomexicana Grindelia arizonica var. dentata Grindelia arizonica var. microphylla Grindelia arizonica var. neomexicana Grindelia arizonica var. arizonica