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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.


Annual, sometimes aromatic. Stem: branched, erect or decumbent. Leaf: alternate, irregularly 2–3-pinnately lobed; segments linear; petiole short or 0. Inflorescence: heads radiate or discoid, 1–3; receptacle conic, epaleate; phyllaries in 2–3 unequal series, margins scarious. Ray flower: 0 or 10–25; ray white. Disk flower: many; corolla yellow, tubular, narrowed distally; anthers minute, tip ovate, base rounded or ± cordate; style short, branches truncate with bushy tips. Fruit: cylindric to obconic, gelatinous when wet (in California), 3–5-ribbed; pappus a narrow crown or 0.
7 species: Europe, Asia, North America. (Greek: womb, describing medicinal use) [Brouillet 2006 FNANM 19:540–542] Chamomilla nomenclaturally superseded by Matricaria.

Key to Matricaria

1. Heads radiate ..... M. chamomilla

1' Heads discoid

2. Tip of fruit entire, pappus 0 or crown ± entire; plant (1)10–30(50) cm; peduncle <= 1.5(2.5) cm; disturbed places ..... M. discoidea

2' Tip of fruit and pappus crown 2-lobed; plant 15–45(70) cm; peduncle <= 6.5 cm; undisturbed wet places ..... M. occidentalis


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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