Jepson Flora Project: Jepson Interchange    

 
link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

    THIS PAGE IS NO LONGER UPDATED
    AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

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]

MENTHA

MINT

Perennial from rhizomes, glabrous to hairy
Stems generally ascending to erect, generally branched
Leaf petioled to sessile, elliptic, ovate, or lanceolate, toothed to lobed
Inflorescences axillary, each head-like and subtended by leaves, or collectively spike- or panicle-like and by bracts
Flower: calyx ± radial, generally 10-veined, lobes equal or unequal; corolla ± 2-lipped, lips generally equal, upper lip notched, lower lip 3-lobed; stamens 4, ± equal, generally exserted; style lobes unequal
Species in genus: 25 species: temp. North America, Eurasia
Etymology: (Latin: ancient name for mint)
Reference: [Tucker, Harley, & Fairbrothers 1980 Taxon 29:233–255]
Cult for oils, flavoring, herbs. Many cultivated and naturalized populations derived from hybridization, generally complexly polyploid, some sterile, reproducing vegetatively.

Native

M. arvensis L.


Stem 1–5(8) dm, puberulent to short-hairy
Leaf: 1.5–5(8) cm; lower short-petioled; cauline generally subsessile; blade ovate to elliptic, base tapered, tip generally acute, crenate to serrate, lower surface (especially veins) short-hairy
Inflorescences axillary, each head-like, subtended by spreading leaves; bracts minute or 0
Flower: calyx 1.5–3 mm, short-hairy; corolla 4–7 mm, white, pink, or violet; stamens > corolla lobes
Chromosomes: 2n=24,54,72,90
Ecology: Moist areas, streambanks, lake shores
Elevation: < 2400 m.
Bioregional distribution: California Floristic Province, Great Basin Floristic Province
Distribution outside California: circumboreal
Flowering time: Jul–Oct
Synonyms: var. villosa (Benth.) S.R. Stewart
Some plants sterile; some plants naturalized from Eur.

previous taxon | next taxon
bioregional map for MENTHA%20arvensis being generated
 


Retrieve Jepson Interchange Index to Plant Names entry for Mentha arvensis
Retrieve dichotomous key for Mentha
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page
Glossary


University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California