Grindelia scabra Greene

Rough gumweed (en)

Species

Angiosperms > Asterales > Asteraceae > Grindelia

Characteristics

Annuals, biennials, or perennials, 20–70 cm. Stems erect, usually reddish, ± villous to hirtellous. Cauline leaf blades ovoid-oblong or spatulate to oblanceolate or lanceolate, 20–35(–85) mm, lengths 1.5–2.5 times widths, bases ± clasping, margins serrate to denticulate (teeth apiculate to setose), apices obtuse to acute, faces usually puberulous to scabridulous and little, or not at all, gland-dotted, sometimes glabrous. Heads in open, corymbiform arrays or borne singly. Involucres ± hemispheric, 7–11 × (10–)15–20 mm (often subtended by leaflike bracts). Phyllaries in 4–6 series, spreading to appressed, filiform or linear to lanceolate or oblanceolate, apices filiform to subulate, slightly recurved to nearly straight or incurved (usually scabridulous), scarcely to moderately resinous. Ray florets 17–30; laminae (usually more orange than yellow) 12–16 mm. Cypselae brownish, 2.5–3 mm, apices smooth or minutely coronate, faces smooth or striate; pappi of 2–4 straight, usually barbellulate to barbellate, sometimes smooth bristles 3–6 mm, slightly shorter than to ± equaling disc corollas.
Life form
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.2 - 0.7
Root system -
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 scabra world distribution map, present in Mexico and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:210657-1
WFO ID wfo-0000087522
COL ID 6L52T
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Grindelia scabra Grindelia scabra var. scabra