Tansy Ragweed, Tansy Ragwort
Jacobaea vulgaris
Synonym: Senecio jacobaea
![Flower head of Tansy Ragweed, Tansy Ragwort: Jacobaea vulgaris (Synonym: Senecio jacobaea)](jacobaea/seneciojac2.jpg)
The photo above shows a close-up of one flower
head of tansy ragweed as seen along forest road #23 at the Mt. Adams viewpoint
about one-half mile south of road #8810.........August 6, 2005.
![Leaf of Tansy Ragweed, Tansy Ragwort: Jacobaea vulgaris (Synonym: Senecio jacobaea)](jacobaea/seneciojaclf.jpg)
The photo above shows a close-up of a stem leaf of tansy ragweed
as seen along forest road #23 at the Mt. Adams viewpoint about one-half mile
south of road #8810...........August 6, 2005.
![Tansy Ragweed, Tansy Ragwort: Jacobaea vulgaris (Synonym: Senecio jacobaea)](jacobaea/seneciojac.jpg)
The photo above shows tansy ragweed as seen along forest road
#23 at the Mt. Adams viewpoint about one-half mile south of road #8810.........August
6, 2005. Also in view is the white oxeye daisy
(Leucanthemum vulgare).
![Inflorescence of Tansy Ragweed, Tansy Ragwort: Jacobaea vulgaris (Synonym: Senecio jacobaea)](jacobaea/seneciojac1.jpg)
The photo above shows a close-up of the inflorescence of tansy
ragweed as seen along forest road #23 at the Mt. Adams viewpoint about one-half
mile south of road #8810..........August 6, 2005.
Paul Slichter