Jepson eFlora
Key to families | Table of families and genera

Key to Nicotiana

View taxon page for Nicotiana

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].
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