Directory       News       Site Map       Home
         
    Jepson eFlora
Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

ACANTHOMINTHA THORNMINT

John M. Miller & James D. Jokerst


Annual, hairy or not, aromatic. Stem: erect, branched or not. Leaf: petioled; blade lanceolate to obovate, entire to spiny. 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, occasionally tinged lavender or rose, throat cream, upper lip 2-lobed to entire, hooded, lower lip 3-lobed, reflexed; stamens 4, upper 2 reduced, sterile or not; style slender, lower lobe longer. Fruit: smooth, ovoid.
4 species: southern California Floristic Province. (Greek: thorn mint) [Wagstaff et al. 1998 Plant Syst Evol 209:265–274]
Unabridged references: [Jokerst 1991 Madroño 38:278–286]

Key to Acanthomintha

1. Stem hairs short proximally, conspicuously glandular distally; style hairy; upper corolla lip ± = lower, 2-lobed, deeply hooded ..... A. lanceolata

1' Stem hairs 0 to long, if glandular then inconspicuous; style glabrous; upper corolla lip < lower, entire, shallowly hooded

2. Upper stamens sterile; anthers glabrous; South Coast, sw Peninsular Ranges ..... A. ilicifolia

2' Upper stamens fertile; anthers hairy; Central Western California, Western Transverse Ranges

3. Anthers pink-red; margins of distal leaves not spiny; stem generally unbranched; inflorescence generally terminal; Central Coast, San Francisco Bay Area ..... A. duttonii

3' Anthers cream; margins of distal leaves spiny; stem generally branched proximally; inflorescence terminal and axillary; South Coast Ranges, Western Transverse Ranges ..... A. obovata

4. Hairs of stem and calyx 0 to short, not glandular; bracts round to wider than long, cordate-clasping at base; Outer South Coast Ranges, w&c Western Transverse Ranges ..... subsp. cordata

4' Hairs of stem and calyx short or long, some inconspicuously glandular; bracts generally longer than wide, obtuse to truncate at base; Inner South Coast Ranges ..... subsp. obovata

Contact/Feedback

Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.