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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.



Ronald B. Kelley & Elaine Joyal

Annual to perennial herb, glabrous to rough-hairy; roots generally fibrous. Stem: decumbent to erect. Leaf: basal generally oblong or oblanceolate; cauline generally linear to elliptic. Inflorescence: generally raceme-like cymes, coiled, in age ± open; bracts 0 (leaf-like). Flower: calyx lobes 5, tube hairs appressed to spreading, hooked at tip or not; corolla salverform or wide-funnel-shaped, generally blue, white, or yellow, appendages prominent or not; stamens included; style generally included. Fruit: nutlets generally 4, ± lens-shaped, smooth, shiny, each with raised outer margin, attachment scar adaxially, at base, small.
50 species: temperate, boreal. (Greek: mouse ear, from leaf) Myosotis arvensis (L.) Hill reported from Orange Co., 1938, not persisting.
Unabridged references: [Grau 1964 Osterr Bot Zeitschr 111:561–617]

Key to Myosotis

1. Calyx tube hairs appressed, not hooked at tip

2. Corolla 2–5 mm diam; calyx tube ± <= lobes; style < nutlets; stem often decumbent but base not creeping or stolon-like; annual to short-lived perennial herb ..... M. laxa

2' Corolla 5–10 mm diam; calyx tube >> lobes; style ± >= nutlets; stem base often creeping or stolon-like; perennial herb ..... M. scorpioides

1' Calyx tube hairs at least some spreading, some or all hooked

3. Calyx lobes unequal, 2 longer; corolla 1–2 mm diam, white ..... [M. verna]

3' Calyx lobes ± equal; corolla 1–10 mm diam, generally blue, occasionally initially yellow or pink

4. Pedicel in fruit >= calyx; corolla 5–10 mm diam; perennial herb ..... M. latifolia

4' Pedicel in fruit < to << calyx; corolla 1–3 mm diam; annual, occasionally biennial

5. Flowers ± in upper 1/2 of pl; corolla yellow turning blue; style >= nutlets; abaxial leaf hairs not hooked at tip ..... M. discolor

5' Flowers ± throughout pl; corolla deep blue; style << nutlets; abaxial leaf hairs hooked at tip ..... M. micrantha


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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