Matricaria Linnaeus (Q2095)
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Matricaria is a taxon with the rank genus within the subtribe Matricariinae
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Matricaria Linnaeus
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Matricaria is a taxon with the rank genus within the subtribe Matricariinae
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Statements
taxon/id/Matricaria Linnaeus
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Matricaria Linnaeus
Matricaria
Linnaeus
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York.
accepted
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some species widespread weeds in the southern hemisphere
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Stems 1–10+, usually erect or ascending, sometimes decumbent, branched or not, glabrous or glabrate to sparsely hairy (hairs basifixed).
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subpetiolate or sessile;
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blades spatulate to oblong or ovate (bases sheathing or clasping, often pinnately auriculate), (1–) 2–3-pinnately lobed (lobes linear, often curved distally), ultimate margins entire (± recurved), mucronate, faces glabrous or glabrate to sparsely hairy (hairs basifixed).
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Heads radiate or discoid, borne singly or in open, corymbiform arrays.
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Involucres patelliform, 4–14 mm diam.
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Phyllaries persistent, 25–50 in [2–] 3–4 [–5] series, distinct, oblong or ovate to spatulate or linear-spatulate (membranous, not carinate, bases not indurate), subequal, margins and apices (hyaline) scarious (apices rounded to obtuse).
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Receptacles conic to oblong-ovoid [subulate] (hollow), epaleate.
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Ray-florets 0 or 10–22, pistillate, fertile;
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corollas white, laminae elliptic-ovate.
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Disc-florets 120–750+, bisexual, fertile;
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corollas (persisting in fruit, often slightly asymmetric, sometimes with scattered, sessile, golden glands) yellow to greenish yellow or yellowish green, tubes (± dilated), throats urceolate to campanulate, lobes 4–5 (spreading), deltate [with resin sacs].
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Cypselae obconic, slightly compressed (usually asymmetric, apices oblique), ribs [3–] 5, faces glabrous, smooth between ribs (pericarps sometimes with myxogenic cells abaxially and/or in ribs; embryo-sac development monosporic);
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spatulate or linear-spatulate
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greenish yellow or yellowish green
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in open , corymbiform arrays
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