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Verbascum thapsus

Verbascum thapsus Linnaeus

Languages: English

Overview

General Description

Biennials to 1.5 m tall, densely with grayish yellow stellate hairs. Basal and lower stem leaves petiolate; leaf blade oblanceolate-oblong, to 15 cm long, 6 cm wide, margin crenate. Other stem leaves gradually decreasing in size upward, sessile, oblong to ovate-oblong, base decurrent into wings. Spicate panicle cylindric, to 30 cm long, 2 cm wide, dense. Flowers usually few fascicled. Pedicel short. Calyx ca. 7 mm; lobes lanceolate. Corolla yellow, 1-2 cm in diameter. Stamens 5; filaments of anterior 2 stamens glabrous and of posterior 3 pubescent; anther lobes divergent at base. Capsule ovoid, as long as persistent calyx.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Description

Genetics

The chromosomal number of Verbascum thapsus is 2n = 36 (Hill, 1989; Wentworth et al., 1991; Lövkvist and Hultgård, 1999).

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Ecology and Distribution

Cyclicity

Flowering from June to August; fruiting from July to October.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Distribution

Verbascum thapsus is occurring in Jiangsu, Sichuan, Xinjiang, Xizang, Yunnan, Zhejiang of China, Asia and Europe, naturalized throughout the Northern Hemisphere.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

Habitat

Growing in grassy areas on mountains slopes, along rivers; 1400-3200 m.

Author(s): Wen, Jun
Rights holder(s): Wen, Jun

References

Hill, L. M. (1989).  IOPB chromosome data 1. International Organization of Plant. Biosystematists Newsletter. 13,
Lövkvist, B., & Hultgård U. M. (1999).  Chromosome numbers in south Swedish vascular plants. Opera Botanica. 137,
Wentworth, J. E., Bailey J. P., & Gornall R. J. (1991).  Contributions to a cytological catalogue of the British and Irish flora. Watsonia. 18,