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|Jepson eFlora: Taxon page
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|Family: Scrophulariaceae||View Description||Dichotomous Key|
|Genus: Verbascum||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Verbascum thapsus L.
Habit: Densely tomentose, hairs stellate or many-branched. Stem: 30--200 cm, generally simple. Leaf: basal short-petioled, 8--50 cm, oblanceolate, generally entire; cauline sessile, long-decurrent, 5--30 cm, lanceolate, generally entire. Inflorescence: raceme, dense; bracts 12--18 mm; pedicels < 2 mm, generally fused to stem. Flower: calyx 7--9 mm, lobes lanceolate; corolla 15--25(30) mm wide, yellow, glandular; upper 3 filaments white- or yellow-hairy, lower 2 glabrous to sparse-hairy. Fruit: 7--10 mm, ovoid. Chromosomes: 2n=32,34,36.
Ecology: Roadsides, streambanks, disturbed areas; Elevation: < 2470 m. Bioregional Distribution: CA-FP, n SNE, MP; Distribution Outside California: native to Eurasia. Flowering Time: May--Sep
eFlora Treatment Author: Robert E. Preston & Margriet Wetherwax
Jepson Online Interchange
Weed listed by Cal-IPC
Previous taxon: Verbascum speciosum
Next taxon: Verbascum virgatum
Citation for this treatment: Robert E. Preston & Margriet Wetherwax 2016. Verbascum thapsus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=47846, accessed on October 20, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on October 20, 2016.