Scientific name: Verbascum thapsus L.
Differs from Verbascum phlomoides and Verbascum bombyciferum in decurrent stem-leaves.
From Verbascum densiflorumin capitate stigma.
FromVerbascum bombyciferum in 2 lower filaments glabrous to sparsely pubescent.
Chromosome number: 2n=36.
Native; waste and rough ground, banks and grassy places, mostly on sandy or chalky soils.
Common in Central & South Britain and Channel Islands, locally frequent elsewhere, by far the commonest species.
This species is keyed out on Page 3245 in the Text Key.
- Verbascum x lemaitrei Boreau (= Verbascum virgatum x Verbascum thapsus) has occurred as a casual in Warks in 1892 and in Midlothian in 1996.
- Verbascum pyramidatum x Verbascum thapsus has occurred in Cambs; endemic.
- Verbascum x kerneri Fritsch (= Verbascum phlomoides x Verbascum thapsus) has occurred in Cambs, Middlesex and West Kent.
- Verbascum x semialbum Chaub. (= Verbascum thapsus x Verbascum nigrum) is rather frequent with its parents in much of Britain; by far the commonest hybrid in the genus. Usually the upper 3 filaments have violet and the lower 2 white hairs, but all the anthers are reniform.
- Verbascum x duernsteinense Teyber (= Verbascum thapsus x Verbascum speciosum) has occurred in West Norfolk.
- Verbascum x godronii Boreau (= Verbascum thapsus x Verbascum pulverulentum) has occurred in a few places in South England.
- Verbascum x thapsi L. (= Verbascum thapsus x Verbascum lychnitis) (Synoniem: Verbascum x spurium W.D.J. Koch) is occasional with the parents in Central & South Britain.
Verbascum thapsus (Mullein, Great)
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