Japanese name: サワオグルマ（沢小車） Scientific name:Tephroseris pierotii
[Overview]
A perennial 50–80 cm tall, found in wetlands in the mountains, often growing in colonies.
The stem is hollow, erect, thick and soft, and covered with white cobwebby hairs.
There are basal leaves and stem leaves; the basal leaves are elliptic to lanceolate, 12–25 cm long and 1.5–7 cm wide, at first densely covered with cobwebby hairs on both sides but later hairless, have leaf stalks, and persist at flowering time.
The stem leaves are simple and alternate, ovate-lanceolate, and clasp the stem at the base.
About 30 flower heads are borne at the stem tip in corymb-like to umbel-like arrangement.
The flowers consist of ray florets and tubular florets; the ray florets are yellow and 1.1–1.6 cm long.
The flower stalk is 3–8 cm.
The involucre is cylindrical and 7–8.5 mm long.
The achenes are hairless and have a pappus 0.9–1.3 cm long.
