Jepson Flora Project: Jepson Interchange    

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

MINT FAMILY

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]

LAMIUM

DEAD NETTLE

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]

Introduced

L. purpureum L.

Annual
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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bioregional map for LAMIUM%20purpureum being generated
 
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Retrieve Jepson Interchange Index to Plant Names entry for Lamium purpureum
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