This page is based on the 1993 Jepson Manual.
Please see the Jepson eFlora for up-to-date information about California vascular plants.
|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
Print edition is available from the University of California Press
|The second edition of The Jepson Manual (2012) is available from the University of California Press|
|See also the Jepson eFlora, which parallels the Second Edition|
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 212); subtended by leaves or bracts; flowers sessile or pedicelled
Flower generally bisexual; calyx generally 5-lobed, radial to bilateral; corolla generally bilateral, 12-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 11:163185]
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)
Plant ill-smelling, soft-hairySee the CNPS Inventory for information about endangerment and rarity.
Stem 1030 cm; hairs short below, conspicuously glandular above
Leaf glandular; blades 1020 mm, lance-oblong to ovate, upper spiny; margins entire, serrate, or spiny
Inflorescence: bracts 912 mm, oblong, marginal spines 79, 1012 mm
Flower: calyx 12 mm; corolla 22.5 cm, white, sometimes pink-tipped, glandular-hairy, lips 810 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.
|YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).|