Jepson eFlora
Key to families | Table of families and genera

Key to Nicotiana

View taxon page for Nicotiana

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

1. Shrub, small tree; herbage glabrous, glaucous ..... N. glauca

1' Annual, perennial herb; herbage generally glandular-hairy

2. Corolla 50–75 mm; cauline leaves generally elliptic; basal leaf petioles winged ..... [N. sylvestris]

2' Corolla 15–50(65) mm; cauline leaves generally lanceolate; basal leaf petioles winged or not

3. Upper cauline leaves clasping; perennial herb, base often ± woody; corolla open during day ..... N. obtusifolia

3' Upper cauline leaves not clasping; annual; corolla generally ± closed during day

4. Cauline leaves generally ± sessile (except lowest)

5. Corolla tube 15–20 mm, limb 8–10 mm wide; stamens attached ± at 1 level below tube middle; calyx lobes very unequal ..... N. clevelandii

5' Corolla tube 25–50 mm, limb 20–50 mm wide; stamens attached at various levels generally above tube middle; calyx lobes ± unequal ..... N. quadrivalvis

4' Cauline leaves petioled

6. Calyx dark-striped, lobes narrowly lanceolate, unequal, generally ± >= tube, not pock-marked; plant densely glandular-hairy ..... N. acuminata var. multiflora

6' Calyx not striped, lobes triangular, ± equal, < tube, pock-marked; plant glabrous to ± sparsely glandular-hairy ..... N. attenuata


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.