Flora Fridays: Cornflower vernonia | Linzia glabra (Vernonia glabra)
Автор: EcoTraining TV
Загружено: 2019-08-02
Просмотров: 454
Описание:
Instructor Mike Anderson teaches us about the Cornflower vernonia/Wild heliotrope, Latin name Linzia glabra (previously known as Vernonia glabra) and the relation it has with insects.
The genus Vernonia was named after William Vernon (d. 1711), an English botanist who collected in Maryland in the late 1600s. The species name glabra is Latin and means smooth, referring to the smooth leaves that is why this plant is sometimes referred to as a smooth vernonia.
This is a robust erect perennial herb with annual stems, unbranched except in the inflorescence, up to 3 m tall, growing from a large woody rootstock. Lower leaves petiolate, subsessile higher on the stem. Leaves oblong-elliptic to oblanceolate, becoming lanceolate in uppermost leaves; margin coarsely serrate, mostly glabrescent. Capitula numerous in small clusters, terminal on the branches, purple-blue.
If you know why the name changed, please drop us a comment and let us know.
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