Matricaria L.

Mayweed (en), Matricaire (fr)

Genus

Angiosperms > Asterales > Asteraceae

Characteristics

Heads radiate or discoid, the rays white, pistillate and usually fertile; invol bracts dry, 2–3-seriate, not much imbricate, with ± scarious or hyaline margins; receptacle naked, hemispheric to more often conic or elongate; disk-cors yellow, 4–5-toothed; style-branches flattened, truncate, penicillate; achenes glabrous or roughened, generally nerved on the margins and ventrally, nerveless dorsally; pappus a short crown or none; herbs with alternate, pinnatifid or pinnately dissected lvs and small or middle-sized heads terminating the branches or in a corymbiform infl. 40, N. Hemisphere and S. Afr.
More
Annual herbs. Lvs 2-3-pinnatisect, alternate. Capitula in corymbs or often solitary, terminal, pedunculate; involucral bracts in 2-3 rows, with membranous margins. Receptacle conic; scales 0. Outer florets ♀ and ligulate, or ☿ and tubular; ligules white; inner florets ☿, tubular. Achenes usually all similar, terete, mucilaginous when wet; ribs 3-10, strongly developed on inner surface; pappus a small corona or 0.
Annual herbs, erect. Leaves 2-or 3-pinnatisect. Capitula solitary or few, rarely subsessile, radiate or discoid; involucre ±3-seriate, with all or nearly all bracts ±equal in length; receptacle epaleate. Ray florets female, fertile. Disc florets bisexual; corolla 4-or 5-lobed. Achenes ±homomorphic, terete or slightly compressed, with 4 or 5 ribs concentrated adaxially. Pappus present.
Life form annual
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
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Rooting depth (meter) -
Root diameter (meter) -
Flower color -
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Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
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Hardiness (USDA) 4-9

Usage

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

Cultivation

Mode -
Germination duration (days) 5 - 21
Germination temperacture (C°) 18 - 23
Germination luminosity light
Germination treatment -
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Optimum temperature (C°) -
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