DARK MULLEIN

Verbascum nigrum

Figwort Family [Scrophulariaceae]

month8jun month8june month8jul month8july month8aug month8sep month8sept

status
statusZnative
flower
flower8yellow
inner
inner8mauve
morph
morph8hemizygo
petals
petalsZ5
type
typeZspiked
stem
stem8angular
stem
stem8ribbed

7th Aug 2008, Etherow, Greater M/cr. Photo: © RWD
The second-most frequent native Mullein and standing up to 1.2m tall.


7th Aug 2008, Etherow, Greater M/cr. Photo: © RWD
Distinguished by its yellow flowers with purple hairs on the stamens.


7th Aug 2008, Etherow, Greater M/cr. Photo: © RWD
Like all Mulleins, it has five stamens, all of them with purple hairs on them.


7th Aug 2008, Etherow, Greater M/cr. Photo: © RWD
The flowers occur in singly as a spike of flowers up the usually little-branched plant. The flowers appear radially symmetric, but it has a slight bilateral symmetry, therefore it is hemozygomorphic in form.


7th Aug 2008, Etherow, Greater M/cr. Photo: © RWD
The stamens are tubular and dark-orange at the tip. The stigma has a green blob on the end.


7th Aug 2008, Etherow, Greater M/cr. Photo: © RWD
The plant does have short hairs but is not woolly hairy.


7th Aug 2008, Etherow, Greater M/cr. Photo: © RWD


7th Aug 2008, Etherow, Greater M/cr. Photo: © RWD
With their radially arranged hairs the stamens look like miniature bottle brushes.


7th Aug 2008, Etherow, Greater M/cr. Photo: © RWD
Leaves dark-green and stalked with net veins. Lower leaves heart-shaped.


7th Aug 2008, Etherow, Greater M/cr. Photo: © RWD
The stem is angular and ridged in places.


Hybridizes with seven other Mulleins :

  • Caucasian Mullein (Verbascum pyramidatum) to produce Verbascum × pyramidatum which hasn't been seen (in Norfolk) since 1990
  • White Mullein (Verbascum lychnitis) to produce Verbascum × incanum which hasn't been seen since 1999.
  • Moth Mullein (Verbascum blattaria) to produce Verbascum × intermedium which occurs in one hectad in Lincs.
  • Hoary Mullein (Verbascum pulverulentum) to produce Verbascum × mixtumwhich occurs in 2 hectads in East Anglia.
  • Great Mullein (Verbascum thapsus) to produce Verbascum × semialbum which occurs in less than a dozen hectads
  • Hungarian Mullein (Verbascum speciosum) which only occurs in one hectad.
  • Twiggy Mullein (Verbascum virgatum) which occurred in one hectad in Norfolk
but both parents generally need to be present in the area for this to occur with Mulleins, and the hybrids are usually, but not always, sterile and cannot reproduce. Hybrids between the white-flowered White Mullein (Verbascum lychnitis) and any yellow flowered species are yellow. Hybrids between any species with two obliquely positioned anthers and those with straight anthers may not result in flowers with any obliquely positioned anthers. Uniquely identifiable characteristics

Distinguishing Feature : A Mullein with five yellow petals and with all five stamens hairy.

No relation to : Dark Stonewort or Dark-red Helleborine [plants with similar names].

More likely to be found growing in a garden than in the wild, at least in the North of England. Stems are little-branched or not at all.


  Verbascum nigrum  ⇐ Global Aspect ⇒ Scrophulariaceae  

Distribution
 family8Figwort family8Scrophulariaceae

 BSBI maps
genus8Verbascum
Verbascum
(Mulleins)

DARK MULLEIN

Verbascum nigrum

Figwort Family [Scrophulariaceae]