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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.
Annual to subshrub, variously hairy, glandular or not; ± taprooted, rhizome generally 0. Stem: prostrate. Leaf: cauline, generally clustered, evergreen, petioled, margin rolled under, entire or ± crenate. Inflorescence: ± axillary; flowers 1 or clustered, sessile. Flower: radial to ± bilateral; calyx lobes 5, not enlarged in fruit; corolla generally ± funnel-shaped, tube yellow in youth, appendages 0; style 2-lobed, stigmas 2. Fruit: nutlets 1–4, not separate to base, 4-grooved to deep-4-lobed, ± tubercled or not.
27 species: western hemisphere deserts. (Native South American name for flower)
Unabridged references: [Richardson 1977 Rhodora 79:467–572]
Unabridged note: Separated from Coldenia of eastern hemisphere prior to TJM (1993).
1. Branches alternate; leaf veins obscure, blade ovate to narrow-elliptic; perennial herb, subshrub; style branched < 1/3 from tip; fruit 4-grooved ..... T. canescens
2. Corolla 4–7.5 mm, limb 2.5–4.5 mm diam ..... var. canescens
2' Corolla 8–12 mm, limb 5–8 mm diam ..... var. pulchella
1' Branches opposite; leaf veins obvious, ± sunken, blade ovate, round, or obovate; annual, perennial herb; style branched 1/2–4/5 from tip; fruit 4-lobed
3. Rhizome present; stem ± glandular; leaf veins deeply sunken, lateral pairs 4–7 ..... T. plicata
3' Rhizome 0; stem ± nonglandular; leaf veins shallowly sunken, lateral pairs 2–3
4. Annual, not woody; style < calyx; leaf margin entire, lateral veins ± 30° from midvein; corolla pink to white; seed oblong-ovoid ..... T. nuttallii
4' Perennial herb, ± woody; style > calyx; leaf margin ± crenate, lateral veins ± 45° from midvein; corolla blue, purple, or lavender; seed spheric ..... T. palmeri
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].
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