Stephanomeria exigua Nutt.

Small wirelettuce (en)

Species

Angiosperms > Asterales > Asteraceae > Stephanomeria

Characteristics

Annuals, 10–200 cm (taproots relatively large). Stems single, branches divaricately or freely spreading, glabrous or sparsely pubescent. Leaves withered at flowering; basal blades linear to oblanceolate, runcinate, 3–10 cm, margins pinnately lobed; cauline much reduced, bractlike . Heads borne singly or clustered along branches or in paniculiform arrays. Peduncles 2–10 mm (along branches), or 10–40 mm (in paniculiform arrays). Calyculi of appressed or reflexed bractlets (glabrous, pubescent, or stipitate-glandular). Involucres 5–7 mm (glabrous, puberulent, or densely stipitate-glandular). Florets 5–11. Cypselae light tan to dark brown, 2.1–6.8 mm, faces smooth to tuberculate, grooved; pappi of 5–24 tan or white bristles (falling or widened bases persistent, bases connate in groups of 2–4 distal portions breaking off), plumose on distal 50–85%. 2n = 16.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.55 - 1.5
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 c3

Environment

Sandy soils, deserts, sagebrush, creosote bush, pinyon-juniper woodlands, Joshua Tree communities at elevations of 100-2000 metres.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-10

Usage

Uses medicinal
Edible -
Therapeutic use Diuretic (unspecified), Venereal Aid (unspecified), Misc. Disease Remedy (unspecified)
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 -

Images

Flower

Stephanomeria exigua flower picture by Deanna Tartaglia (cc-by-sa)

Distribution

Stephanomeria exigua world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:245080-2
WFO ID wfo-0000091288
COL ID 6ZPLY
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Stephanomeria schottii Stephanomeria pentachaeta Stephanomeria exigua Ptiloria exigua var. exigua Stephanomeria exigua var. exigua Stephanomeria exigua subsp. pentachaeta

Lower taxons

Stephanomeria exigua subsp. carotifera Stephanomeria exigua subsp. deanei Stephanomeria exigua subsp. coronaria Stephanomeria exigua subsp. exigua