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Rayless ragwort

Senecio aronicoides

Rayless ragwort
Photo: Jamie Carter, CC BY 4.0
Family
Asteraceae (Daisy family)
Grows as
Perennial
Native range
Oregon to California

About

Senecio aronicoides is a species of flowering plant in the aster family known by the common name rayless ragwort. It is native to Oregon and northern and central California, where it can be found in the woodlands and forests of mountains and foothills, often in relatively dry habitat. It is a biennial or perennial herb growing up to about 90 centimeters tall from a fleshy root attached to a buttonlike caudex. The plant is often slightly woolly or cobwebby in texture. The leaves have lance-shaped to oval blades measuring up to 20 centimeters long, the largest ones lower on the stem. The inflorescence is a corymb which is flat and spreading, often resembling an umbel. The flower heads are cups lined with black- or green-tipped phyllaries and filled with many gold disc florets. There are usually no ray florets but one or two occasionally emerge from a head.

Other Senecio plants

Cutleaf burnweed · Yellow Starvation Ragwort · Senecio adenotrichius · Texas ragwort · Creeping groundsel · Senecio antandroi · Senecio antisanae · Senecio antofagastanus · Chaparral ragwort · Senecio apolobambensis · Senecio aquilaris · Senecio argutus

Text excerpted from the Wikipedia article Senecio aronicoides by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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