Dictionary » R » Ragwort



(Science: botany) A name given to several species of the composite genus senecio.

senecio aureus is the golden ragwort of the united states: S. Elegans is the purple ragwort of south Africa.

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Identifying Flower and Tree

The first one (straggly yellow flowers) looks like Ragwort. Genus Senecio, with various species.(sorry, can't do italics for the genus name - which always irritates me when I see Linnean names unitalisced in newspapers etc!)

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by Julie5
Mon Oct 04, 2010 11:55 am
Forum: Botany Discussion
Topic: Identifying Flower and Tree
Replies: 2
Views: 2422

Re: Wolf - Chihuahua - Great Dane: same species ?

... Here's another with York Groundsel (Senecio eboracensis) The York groundsel is a natural hybrid between the common groundsel and the Oxford ragwort, which was introduced to Britain from Sicily 300 years ago. Hybrids are normally sterile, and cannot breed and die out. But Dr Abbott’s research, ...

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by robsabba
Wed Dec 02, 2009 3:57 pm
Forum: Evolution
Topic: Wolf - Chihuahua - Great Dane: same species ?
Replies: 12
Views: 15974

New species since humans?

... the new genus Triticale by crossing rye and wheat. A natural hybridization occurred in the last 50 years between common groundsel and the Oxford ragwort in England. New species of Cichlid fishes evolved in lakes in East Africa in the last 300,000 years.

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by robsabba
Mon Sep 14, 2009 5:43 pm
Forum: Evolution
Topic: New species since humans?
Replies: 34
Views: 17485

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