Teeth-margin crepidiastrum is a small East Asian member of the daisy family that covers dry hillsides and roadsides with little yellow flower heads in fall. It doesn't grow in the US; it's native to Japan, Korea, China, and nearby parts of Asia.
Appearance
- Growth form
- A short-lived plant, about 1–4 ft (30–120 cm) tall, that branches a lot near the top.
- Leaves
- The stem leaves clasp the stem at their base. Broken stems and leaves ooze a bitter, milky sap.
- Flowers
- Yellow flower heads about ½ in (1.5 cm) across face upward when open, then nod downward after blooming. In Japan they bloom from September to November.
Where it lives
- Range
- Native to East and Southeast Asia, from the Russian Far East, Korea, and Japan south through China and Taiwan to Vietnam. Not found in the US.
- Preferred conditions
- Sunny, dry ground: roadsides, slopes, and rock faces. In Japan it's often one of the first plants to move into freshly cleared bare soil.
Life cycle
- Seed dispersal
- The seeds are carried by the wind.
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