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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, perennial herb.
Stem: erect or prostrate.
Leaf: cauline, opposite, sessile to short-petioled.
Inflorescence: raceme, terminal or axillary, or flowers 1 in axils; bracts small, alternate.
Flower: sepals generally 4(5), ± free, generally unequal; corolla ± radial, ± rotate, generally 4-lobed, tube << lobes, upper lobe wide (perhaps formed by fusion of upper pair), blue or violet to white; stamens 2, exserted; stigma unlobed.
Fruit: flattened perpendicular to septum, generally obcordate, loculicidal and septicidal.
± 250 species: n temperate, especially Eurasia. (Named for Saint Veronica) Veronica beccabunga L., Veronica chamaedrys L. not in CA; Veronica filiformis Sm., Veronica hederifolia L. occasionally as lawn weeds. Plants from MP resembling Veronica persica reported as Veronica biloba L. (bracts < leaves, style < 1 mm).
Unabridged references: [Albach et al. 2005 Amer J Bot 92:297–315; Olmstead et al. 2001 Amer J Bot 88:348–361]
1. Racemes axillary; herbage generally glabrous; perennial herb
2. Lvs petioled ..... V. americana
2' Lvs sessile (proximal rarely short-petioled)
3. Racemes alternate; leaf lance-linear, length generally >> 5 × width; fruit deeply notched ..... V. scutellata
3' Racemes opposite; leaf elliptic or lanceolate to ovate, length < 5 × width; fruit entire or slightly notched
4. Lvs elliptic to ovate, length 1.5–3 × width; corolla 5–10 mm, lavender to blue; fruit rounded to obcordate ..... V. anagallis-aquatica
4' Lvs lanceolate, length 3–5 × width; corolla 3–5 mm, pink; fruit notched 0.1–0.3 mm ..... V. catenata
1' Racemes mostly terminal, or flowers 1 in axils; herbage generally hairy; annual or perennial herb
5. Perennial, rhizomed
6. Style 6–9 mm, > fruit; corolla 8–13 mm
7. Lvs hairy; corolla 8–10 mm, pale blue to lavender-rose; e KR ..... V. copelandii
7' Lvs generally glabrous; corolla 10–13 mm, deep blue; CaR, n&c SNH ..... V. cusickii
6' Style 0.8–3 mm, generally < fruit; corolla 6–10 mm
8. Style 2–3 mm; fruit generally < calyx, wider than long; stem decumbent ..... V. serpyllifolia subsp. humifusa
8' Style 0.8–1.3 mm; fruit > calyx, longer than wide; stem erect nearly from base ..... V. wormskjoldii
5' Annual, fibrous-rooted or taprooted
9. Pedicel 0.5–2 mm, < calyx; seeds generally many per chamber, flat, smooth
10. Lf triangular to ovate, crenate to serrate; sepals unequal (outer pair larger); corolla blue to violet ..... V. arvensis
10' Lf oblong to spoon-shaped, entire to ± serrate; sepals ± equal; corolla ± white ..... V. peregrina subsp. xalapensis
9' Pedicel 4–30 mm, generally > calyx; seeds 5–12 per chamber, concave, outer surface rough
11. Pedicel 15–30 mm; leaf crenate to serrate; style 2–3 mm; fruit lobes spreading ..... V. persica
11' Pedicel 4–15 mm; leaf palmately 3–9 lobed; style 1.2–1.6 mm; fruit lobes ± parallel (or fruit ± round) ..... [V. triphyllos]
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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