Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera

Key to Senna

View taxon page for Senna

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

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

1. Perennial herb to subshrubleaflets generally 4–18

2. Leaflets 4–8; gland(s) on main  axis between  pairs; plant densely hairy ..... S. covesii

2' Leaflets 12–18; gland(s) near base of ; plant glabrous ..... [S. marilandica]

1' Shrub to small tree; leaflets generally 4–20

3. Shrubs of dry places; leaflets  or generally , generally flat, persistent or < 1 cm, ephemeral

4. Stem, leaf ± glabrous; leaflets 4–8, 4–6 mm ..... S. armata

4' Stem, leaf sparsely to densely hairy; leaflets 6–16, 10–25 mm ..... S. artemisioides

3' Shrubs to small trees generally not of dry places; leaflets  to , not ephemeral

5. Stipules 6–17 mm, ovate-cordate, generally persistent; uppermost, unopened flowers covered by bractsfruit flat,  ..... S. didymobotrya

5' Stipules 3.5–7 mm, , ephemeral; uppermost, unopened flowers not covered by bracts; fruit not flat,  ..... S. multiglandulosa


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Citation for the whole project: Jepson Flora Project (eds.) . Jepson 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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