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Key to families | Table of families and genera
This text currently parallels The Jepson Manual: Vascular Plants of California, Second Edition that is now available at the University of California Press.
Text appearing in blue on this page will not appear in the printed book; it will be displayed only on the Web. 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, shrub, strong-scented.
Stem: hairy, generally glandular.
Leaf: simple; blade linear to ovate, entire.
Inflorescence: cyme ( raceme), axillary.
Flower: calyx lobes 5, equal or uppermost 1 narrower; corolla blue to lavender, tube straight or curved upward, occasionally sharply recurved near throat, included to much- exserted from calyx, lobes 5, lowest a generally reflexed lip; stamens 4, attached near throat, generally much- exserted, ascending between upper corolla lobes, generally arched.
Fruit: nutlets 4, joined in basal ± 1/3, puberulent to hairy, irregularly ridged.
± 17 species: North America. (Greek: hair, stamen) [Lewis 1945 Brittonia 5:276–303] Annual species generally flowering late summer, fall.
1. Shrub, < 1.5 m
2. Corolla tube 9–14 mm; inflorescence hairs 2–3 mm, obscuring pedicel ..... T. lanatum
2' Corolla tube 4–7 mm; inflorescence hairs 1–2 mm, not obscuring pedicel ..... T. parishii
1' Annual, < 1 m
3. Petiole distinct, 5–15 mm
4. Corolla tube 4–8 mm, exserted, lower lip 4–7 mm ..... T. laxum
4' Corolla tube 1.5–3 mm, included, lower lip 2–3 mm ..... T. simulatum
3' Petiole indistinct or < 5 mm
5. Corolla tube curved abruptly upward near throat; stamens 5–20 mm
6. Stamens 5–9 mm ..... T. ruygtii
6' Stamens 11–20 mm
7. Lf blade 2–7 cm, lanceolate to narrowly ovate, length > 3 × width; corolla tube 5–10 mm ..... T. lanceolatum
7' Lf blade 1–2 cm, ovate, length < 2 × width; corolla tube 2.5–5.5 mm ..... T. ovatum
5' Corolla tube curved gradually upward; stamens 2–6 mm
8. St, leaf hairs curled to appressed; stamens 2–3 mm, ± included to ± exserted ..... T. micranthum
8' St, leaf hairs straight, generally spreading; stamens 3–6 mm, exserted
9. Calyx lobes < 2 × tube; calyx tube > mature nutlets; mature calyx generally red-tinged ..... T. rubisepalum
9' Calyx lobes > 2 × tube; calyx tube < mature nutlets; mature calyx green
10. Lf blade widely elliptic, length generally < 4 × width; calyx lobes generally widest above base ..... T. oblongum
10' Lf blade elliptic, length generally > 4 × width; calyx lobes widest at base ..... T. austromontanum
11. Lf <= internode above ..... subsp. austromontanum
11' Lf >> internode above ..... subsp. compactum
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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