Ixeris tamagawaensis

澤苦菜

Ixeris tamagawaensis (Makino) Kitam.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

Kitam. 1940. Acta phytotaxonomica et geobotanica eng 9: 115. (Acta Phytotax. Geobot.)

同發表文獻

Ixeris chinensis Makino f. taitoensis (Hayata) Yamamoto

Yamamoto. 1936. Journal of the Society of Tropical Agriculture 8: 352. (J. Soc. Trop. Agr.)
Ixeris graminea Fisch.

Nakai. 1922. The Botanical magazine, Tokyo 36: 23. (Bot. Mag. Tokyo)
Lactuca gracilis DC.

Hayata. 1917. Icones Plantarum Formosanarum 6: 40. (Icon. Pl. Formos.)
Lactuca taitoensis Hayata

Hayata. 1919. Icones Plantarum Formosanarum 8: 76. (Icon. Pl. Formos.)

herb

Perennial herbs with short tufted stolons; stems erect, scapiform, 10–30 cm long, naked or leaf 1.
Radical leaves many, broadly linear, 8–15 × 0.3–0.5 cm, apex acute to acuminate, base narrowed, short, petiole-like, margins usually entire or sometimes slightly mucronulate.
Heads few to many, pedicellate, 12–30 mm across, pale yellow, florets 25–30. Involucre 9–10 mm long, outer bracts somewhat unequal, inner bracts ca. 10.
Achenes lanceolate, ca. 3 mm long; beak as long as body. Pappus white, ca. 5–6 mm long.