|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Lamiaceae (Labiatae)||View Description||Dichotomous Key|
|Genus: Mentha||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Mentha ×smithiana R.A. Graham
Stem: 3--10 dm, generally glabrous. Leaf: 2.5--6(8) cm; petiole 0--10 mm; blade ovate to lanceolate, generally serrate, base tapered to +- lobed, tip acute, abaxially generally glabrous. Inflorescence: generally axillary, generally axillary, occasionally spike-like and terminal, subtending bracts ovate to lance-linear. Flower: calyx 2.5--4 mm, generally glabrous or lobes ciliate; corolla 3.5--6 mm, white to pink or violet; stamens generally included. Chromosomes: 2n=54,98,108,120.
Ecology: Moist places, fields; Elevation: < 300 m. Bioregional Distribution: NCo, CCo, SCo, n ChI, TR, cultivated elsewhere; Distribution Outside California: to Canada, eastern United States; native to Europe, naturalized from cultivation. Flowering Time: Jul--Oct Note: Hybrid of Mentha aquatica, Mentha spicata, Mentha arvensis. Occasionally difficult to distinguish from Mentha ×gracilis, Mentha ×piperita.
eFlora Treatment Author: Arthur O. Tucker
Jepson Online Interchange
Previous taxon: Mentha ×rotundifolia
Next taxon: Mentha spicata
Citation for this treatment: Arthur O. Tucker 2017. Mentha ×smithiana, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=33208, accessed on March 29, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on March 29, 2017.