Jepson eFlora: Key page
Vascular Plants of California
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Key to Verbena

View taxon page for Verbena

(For a list of species in Verbena, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Corolla 8–14 mm, limb 6–10 mm wide; calyx 5–9.5 mm

2. Leaves 3–5-lobed; calyx hairs  ..... V. gooddingii

2' Leaves 1–2-pinnately dissected; calyx hairs  ..... V. pulchella

1' Corolla 1.5–6 mm, limb < 5 mm wide; calyx 2–4.5 mm

3. Flower  4–8 mm, 2–4 mm > calyx; stem  to  ..... V. bracteata

3' Flower bract 1–4.5 mm, generally <= calyx; stem generally  to 

4. Most cauline  blades 1–2-lobed (lobes proximal to mid-blade 8–25 mm deep), toothed

5. Herbage generally sparsely ; calyx minutely strigose ..... V. menthifolia

5' Herbage and calyx short-spreading-hairy ..... V. lasiostachys (2)

6. Leaf adaxial face gray-green, generally ± soft-hairy; nutlet  ± brown, ± rough at 20× ..... var. lasiostachys

6' Leaf adaxial face green, generally stiff-hairy; nutlet scar white-papillate at 20× ..... var. scabrida

4' Most cauline leaf blades generally unlobed (except some Verbena hastata),  or generally toothed, teeth 2–8 mm

7. Lower and mid-cauline  generally 1–2.5 cm, occasionally narrowly winged

8. Petiolesinflorescence axis, calyx short-spreading-(generally soft-) hairy (see 6. for varieties) ..... V. lasiostachys (2)

8' Petioles, inflorescence axis, and calyx strigose or scabrous

9. Fruits generally overlapping (axis with 8–10 fruits per cm); leaves rough-puberulent, sparsely short-bristly or ± scabrous adaxially ..... V. hastata

9' Fruits not overlapping, especially below (axis generally with < 8 fruits per cm); leaves strigose to scabrous adaxially ..... V. scabra

7' Lower and mid-cauline petioles generally 0,   or ± clasping

10. Fruits not overlapping (especially separated proximal to mid-inflorescence); flower bracts 3.5–4 mm; calyx 4–4.5 mm; spikes 1–5 per cluster ..... V. californica

10' Fruits generally overlapping along inflorescence; flower bracts 3–3.5 mm; calyx 3–3.5 mm; spikes generally (1)3–17 per cluster

11. Leaf base  to , generally clasping; spikes ± 5–6 mm diam in fruit ..... V. bonariensis

11' Leaf base ± , subsessile; spikes 3–4 mm diam in fruit ..... V. litoralis

 

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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, http://ucjeps.berkeley.edu/eflora/ [accessed on ]

Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

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