Grindelia pusilla (Steyerm.) G.L.Nesom

Little gumweed (en)

Species

Angiosperms > Asterales > Asteraceae > Grindelia

Characteristics

Annuals, 30–70 cm. Stems erect, stramineous, villosulous, stipitate-glandular. Cauline leaf blades spatulate or oblong to lanceolate, (12–)35–60(–80) mm, lengths mostly 3–6 times widths, margins ± crenate (teeth 5–10 per cm, blunt, resin-tipped), apices obtuse to acute, faces usually hirtellous and glandular (glands usually stipitate, sometimes sessile, seldom in pits), sometimes glabrate. Heads in open, corymbiform arrays or borne singly. Involucres ± globose, (6–)8–12 × (6–)12–18 mm (usually subtended by leaflike bracts). Phyllaries in 4–6 series, spreading to appressed, linear to lanceolate, apices recurved to ± straight, subulate to acuminate, slightly resinous. Ray florets 13–27, laminae 5–12 mm. Cypselae stramineous to brownish, 2.5–4 mm, apices ± coronate, faces rugose (transversely fissured); pappi of 2–3 straight, smooth or (distally) barbellulate (apices usually dilated), setiform awns 4.5–5.5 mm, equaling or surpassing disc corollas. 2n = 12.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 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) -

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

Identifiers

LSID urn:lsid:ipni.org:names:1050739-2
WFO ID wfo-0000018556
COL ID 6L4R4
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Grindelia pusilla Grindelia microcephala var. pusilla