天蓬草舅

Stems long creeping, rooting at nodes, coarsely hirsute; flowering branches ascending, leafy, densely strigose. Cauline leaves thick coriaceous, oblong, sometimes ovate or lanceolate, acute, base cuneate, loosely dentate, 3-nerved, coarsely strigose on both surfaces, petiole 2-8 mm long. Heads 5-22 mm long, 16-22 mm across, usually solitary, terminal; peduncle 1-7 cm long; involucre hemispheric, 10-12×5-6 mm, bracts in 1 series, ovate to ovate-oblong, 2-3.5 mm wide, acute to obtuse, coarsely strigose. Ray corollas yellow, 8-11×4 mm. Disc corollas tubular, 5-6 mm long, 5-dentate. Achenes 3.5-4×2 mm, apically strigillose, 3- or 4-angled. Pappus bristles 1 or 2, or obsolete. Chromosome number, 2n = 30 (Peng & Hsu, 1978).

TAIPEI: Pali, Watzuwei, Leu 1014; Yenliao, Wang 977. ILAN: Chuangwei, Peng 7027; Tungao, Fenniaolin, Peng 13769. TAOYUAN: Tayuan, Houtsokang, Peng 7724. HSINCHU: Lienhuassu, Peng 5159. MIAOLI: Houlung, Wang 1656. PENGHU: Wangan Isl., Leu 2071; Tungpanyu Isl., Chen 731. PINGTUNG: Fengtsueisha, Peng 7205. HUALIEN: Shoufeng, Takeng, Peng 7368.

Southeast Asia, Korea, Japan and China. Taiwan, on littoral sand dunes and sandy seashores.