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]



James D. Jokerst

Annual, hairy or not, aromatic
Stem erect, branched or not
Leaf lanceolate to obovate, entire to spiny, petioled
Inflorescence: clusters, head-like, terminal and generally axillary; bracts generally scarious, veins conspicuous, margins spiny
Flower: calyx 2-lipped, lobes spine-tipped, upper 3 acuminate, lower 2 oblong; corolla funnel-shaped, 2-lipped, white, sometimes tinged lavender or rose, throat cream, upper lip 2-lobed or entire, hooded, lower lip 3-lobed, reflexed; stamens 4, upper 2 reduced, sterile or not; style slender, lower lobe longer
Fruit smooth, ovoid
Species in genus: 4 species: s CA-FP
Etymology: (Greek: thorn mint)


A. lanceolata Curran


Plant ill-smelling, soft-hairy
Stem 10–30 cm; hairs short below, conspicuously glandular above
Leaf glandular; blades 10–20 mm, lance-oblong to ovate, upper spiny; margins entire, serrate, or spiny
Inflorescence: bracts 9–12 mm, oblong, marginal spines 7–9, 10–12 mm
Flower: calyx 12 mm; corolla 2–2.5 cm, white, sometimes pink-tipped, glandular-hairy, lips 8–10 mm, upper ± = lower, 2-lobed, deeply hooded; upper stamens fertile, anthers glabrous; style hairy
Ecology: UNCOMMON. Arid, rocky, often serpentine slopes
Elevation: < 1200 m.
Bioregional distribution: San Francisco Bay Area, Inner South Coast Ranges.
See the CNPS Inventory for information about endangerment and rarity.
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