Verbascum densiflorum

Bertoloni

Rar. Lig. [Ital.] Pl. 3: 52. 1810.

Common names: Denseflower mullein
Introduced
Synonyms: Verbascum thapsiforme Schrader
Treatment appears in FNA Volume 17. Treatment on page 348. Mentioned on page 345, 347.

Biennials. Stems 30–120 cm, densely and persistently tomentose, eglandular. Leaves: surfaces densely and persistently tomentose, eglandular; basal and proximal cauline with petiole 10–30 mm; blade obovate to oblong-ovate, 5–25 (–30) × 4–8 (–12) cm, base attenuate; cauline not clasping, gradually smaller distally, base long-decurrent, margins crenate, apex of distal cauline and floral bracts long-acuminate. Inflorescences unbranched, narrowly cylindric, sometimes branched from proximal nodes, forming a panicle, flowers densely overlapping, in clusters of 2–8; rachis densely and persistently tomentose, eglandular; bracts ovate, 15–40 mm, base decurrent, apex long-acuminate, densely and persistently tomentose, eglandular. Pedicels free or adnate to rachis at base, 3–15 mm; bracteoles 2. Flowers: calyx 5–12 mm, densely and persistently tomentose, eglandular, lobes ovatelanceolate to lanceolate; corolla yellow, 30–55 mm diam., pellucid glands absent or relatively few; proximal filaments glabrous, distal pair villous, hairs white or yellow, anthers orange; stigma spatulate, base decurrent. Capsules elliptic-ovoid, 5–8 mm, tomentose.


Phenology: Flowering May–Aug.
Habitat: Fields, roadsides, disturbed sites.
Elevation: 50–300 m.

Distribution

Introduced; Iowa, Mass., Mich., Mo., Wis., Europe, Asia, also in South America (Chile), Australia

Discussion

Verbascum ×humnickii Franchet is a hybrid between V. densiflorum and V. thapsus.

Selected References

None.

Lower Taxa

None.
... more about "Verbascum densiflorum"
long-acuminate +
Guy L. Nesom +
Bertoloni +
decurrent +, long-decurrent +  and attenuate +
25 cm250 mm <br />0.25 m <br /> (30 cm300 mm <br />0.3 m <br />) +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
obovate;oblong-ovate +
not +, leathery +  and not fleshy +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
campanulate +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
elliptic-ovoid +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Denseflower mullein +
bilabiate +, regular +  and symmetric +
3 cm30 mm <br />0.03 m <br /> (?) +  and 5.5 cm55 mm <br />0.055 m <br /> (?) +
cupulate +  and rotate +
Iowa +, Mass. +, Mich. +, Mo. +, Wis. +, Europe +, Asia +, also in South America (Chile) +  and Australia +
50–300 m. +
curved +  and straight +
not +  and abundant +
glabrous +  and villous +
ovoid +  and ellipsoid-ovoid broadly ellipsoid ovoid-globular or subglobular +
Fields, roadsides, disturbed sites. +
yellow +  and white +
branched +  and unbranched +
axillary +, subterminal +  and terminal +
persistent +, semipersistent +  and deciduous +
cauline +, proximal +  and basal +
ovatelanceolate +  and lanceolate +
tenuinucellate +, unitegmic +  and hemitropous +
adnate +  and free +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
spreading;deflexed +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering May–Aug. +
Rar. Lig. [Ital.] Pl. +
brown +  and orangish +
rugose +  and pitted +
conic +  and cylindric +
connate +  and distinct +
Introduced +
subequal +
30 cm300 mm <br />0.3 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
spatulate +
Verbascum thapsiforme +
Verbascum densiflorum +
Verbascum +
species +
red-tinged +
perennial +, biennial +  and annual +