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Key to families | Table of families and genera

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.

 

VERBASCUM MULLEIN

Robert E. Preston & Margriet Wetherwax


[Annual] biennial, rosette large. Stem: erect, simple or branched just proximal to inflorescence. Leaf: basal and cauline, alternate, distal reduced. Inflorescence: raceme or panicle, bracted. Flower: calyx ± radial, deeply 5-lobed; corolla ± radial, ± rotate, 5-lobed; stamens 5, lower 2 filaments > upper 3, all or only upper hairy; stigma ± spheric. Fruit: capsule, septicidal. Seed: small, wingless, many.
± 360 species: Eurasia. (Latin: from root for bearded) [Donnelly et al. 1998 Amer J Bot 85:1618–1625]

Key to Verbascum

1. Leaf glabrous or ± hairy; filaments all densely purple-hairy; fruit glabrous to glandular-puberulent

2. Leaf glabrous; proximal pedicels 10–15(25) mm, flowers 1 per node ..... V. blattaria

2' Leaf ± hairy; proximal pedicels < 10 mm, flowers 1–4 per node ..... V. virgatum

1' Leaf densely tomentose; upper 3 filaments white- or yellow-hairy, lower 2 glabrous to ± hairy; fruit densely tomentose

3. Inflorescence branched, not dense ..... V. speciosum

3' Inflorescence generally unbranched, dense

4. Cauline leaves not decurrent; corolla 20–30 mm; petals not glandular ..... V. bombyciferum

4' Cauline leaves decurrent; corolla 12–20 mm; petals glandular ..... V. thapsus

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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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