Aster shimadai

島田氏雞兒腸

Aster shimadai (Kitam.) Nemoto

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

Nemoto, Flora of Japan supplement 740. 1936. (Fl. Japan, Suppl.)

Aster lautureanus Franch.

Sasaki, List of plants of Formosa 401. 1928. (List Pl. Formos. (Sasaki))
Asteromoea shimadai Kitam.

Kitam., Acta phytotaxonomica et geobotanica eng 2: 37. 1933. (Acta Phytotax. Geobot.)
Aster indicus Linn. var. lautureanus (Franch.) Yamamoto

Yamamoto, Journal of the Society of Tropical Agriculture 8: 266. 1936. (J. Soc. Trop. Agr.)
Kalimeris shimadai (Kitam.) Kitam.

Kitam., Acta phytotaxonomica et geobotanica eng 6: 50. 1937. (Acta Phytotax. Geobot.)
Kalimeris shimadai (Kitam.) Kitam. f. pinnatifida Kitam.

Kitam., Journal of Japanese Botany 19: 341. 1943. (J. Jpn. Bot.)

herb

Perennial rhizomatous erect herbs, stems sulcate-striate, 50–100 cm tall, sparsely branched, strigose and rough to touch. Radical leaves withering at anthesis.
Radical leaves withering at anthesis. Cauline leaves linear-oblong to oblanceolate, 2.5–3.5 cm long, 1–2 cm wide, apex acute or obtuse, base cuneate into short petiole or leaves sessile, entire or coarsely dentate on upper margin, scabrous on both surfaces, margins scabrous-ciliate; upper leaves gradually smaller, linear-lanceolate, subentire.
Heads solitary or few in loose corymbiform inflorescences, 6–8 mm tall, 8–10 mm across. Involucre hemispheric, 5.8–6.1 mm long, 6.6–8.2 mm wide, bracts in 3 or 4 series, green, oblanceolate, triangular, acute, sparsely pubescent apically, margins submembranaceous, ciliate, inner bracts gradually longer 3.8–6 mm long, 2–3 mm wide, outer bracts 3–3.5 mm long, 1–2 mm wide. Receptacle conical. Ray florets 15–20, 1-seriate, sometimes 2-seriate, ligules bluish purple, 6–12 mm long, 2–3 mm wide. Disc florets 4 mm long, 5-lobed, yellow, 4.5 mm long. Pappus reddish, 0.3–0.5 mm.
Achenes dark brownish, obovate, compressed, 1.2–2.5 mm long, 0.5–0.8 mm wide, sparsely pubescent, with sparse sessile glands apically.
Chromosome number, 2n = 108 (Gu, Cathaya 1: 5. 1989).