Japanese name: キンゴジカ（金午時花） Scientific name:Sida rhombifolia subsp. rhombifolia
[Overview]
A perennial 30–100 cm tall found along roadsides and on vacant lots, but it becomes an annual in cold regions.
The whole plant bears stellate hairs.
The stem is often reddish and without thorns, and the base becomes woody, sometimes making the plant shrub-like.
The leaves are simple and alternate, 1–7 cm long and 1–3 cm wide, lanceolate to rhombic-elliptic and widest at the middle, with a blunt tip and a wedge-shaped base.
The undersides of the leaves are densely covered with stellate hairs and appear whitish, and the fine veins are not visible.
The leaf margins are serrate.
The leaves have petioles, and the stipules are linear to needle-like.
Slender flower stalks extend from the leaf axils and bear 1 to several flowers.
The flowers are pale yellow, 5-petaled, 1.5–1.7 cm across, and in some the center is reddish.
The staminal column is short.
Each flower withers within a few hours.
The calyx is 5-lobed and bears stellate hairs.
The fruit usually consists of 10 mericarps arranged in a ring and enclosed by the calyx.
Each mericarp has 2 horn-like projections at the tip.
