Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Dieter H. Wilken, except as specifed

Annual, perennial herb, shrub, glabrous to hairy, generally aromatic
Stems generally erect, generally 4-angled
Leaves generally simple to deeply lobed, opposite, generally gland-dotted
Inflorescence: cyme, generally clustered around stem, head-like, separated by evident internodes (terminal in Monardella ) or collectively crowded, spike-like to panicle-like (sometimes raceme or flowers 2–12); subtended by leaves or bracts; flowers sessile or pedicelled
Flower generally bisexual; calyx generally 5-lobed, radial to bilateral; corolla generally bilateral, 1–2-lipped, upper lip entire or 2-lobed, ± flat to hood-like, sometimes 0, lower lip generally 3-lobed; stamens generally 4, generally exserted, paired, pairs unequal, sometimes 2, staminodes 2 or 0; ovary superior, generally 4-lobed to base, chambers 2, ovules 2 per chamber, style 1, arising from center at junction of lobes, stigmas generally 2
Fruit: nutlets 4, generally ovoid to oblong, smooth
Genera in family: ± 200 genera, 5500 species: worldwide. Many cultivated for herbs, oils (Lavandula , lavender; Mentha , mint; Ocimum , basil; Rosmarinus , rosemary; Thymus , thyme), some cultivated as ornamental (in CA Cedronella , Leonotis , Phlomis )
Reference: [Cantino & Sanders 1986 Syst Bot 11:163–185]



Annual, perennial herb, glabrous to hairy
Stems decumbent to erect; base generally branched
Leaves petioled to sessile, generally ovate, round or reniform, entire to toothed
Inflorescences terminal and axillary, each head-like, subtended by leaves
Flower: calyx 5-lobed, lobes ± equal, generally acuminate; corolla 2-lipped, upper lip hood-like, lower lip ± 3-lobed, central lobe > lateral lobes; stamens 4, fertile, generally enclosed by upper lip, anthers generally hairy; style ± equally 2-lobed
Fruit: nutlets triangular in X -section, top truncate
Species in genus: 40 species: temp Eurasia, n Africa
Etymology: (Latin: ancient name)
Reference: [Bernström 1955 Hereditas 41:1–122]


L. purpureum L.

Stem 1–6 dm
Leaves: middle, upper (except uppermost) petioled; petioles 1–2 cm; blade 1–3(4) cm, ovate to ± round, base ± lobed, margin crenate to serrate
Flower: calyx 5–7 mm; corolla 10–20 mm, puberulent inside below filaments, pink-purple
Chromosomes: 2n=18
Ecology: Uncommon. Disturbed sites, meadows
Elevation: < 300 m.
Bioregional distribution: North Coast, Central Coast
Distribution outside California: widespread N.America; native to Europe

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