Systematic Botany, Vol. 29, No. 3 (Jul. - Sep., 2004), pp. 790-805 (16 pages) The systematic value of morphological characters in Senecio sect. Jacobaea (Asteraceae) is studied using separate and ...

(1) Field observations of three sand-dune populations of ragwort (Senecio jacobaea L.) in the Netherlands showed that flowering and seed production were related to plant size. Small-sized plants might ...

Tansy ragwort (Senecio jacobaea) is an invasive weed with a long and deadly Mature Tansy Plant history in the Pacific Northwest. In Oregon, it is designated as a Class B invasive weed. It is believed ...

Journal of Botany, December.—The article on a new Senecio hybrid, by Mr. Burbidge and Mr. Colgan, refers to a form found at Sorrento, Ireland, which is intermediate in character between the common ...

Look around these days and you'll find the yellow flowers of tansy abundant in fields, roadsides and even gardens. "This is one of the worst years for tansy in some time," said Sam Leininger, WeedWise ...

Madam, – Eileen Battersby wrote (Summer Living, August 6th) about the noxious senecio jacobaeaand the need to eliminate it. I was given a great dislike for this plant from a very early age, but I ...