- Scientific Name: Pinellia ternata (Thunb.) Makino
- Ref: Bot. Mag. (Tokyo) 15:135. 1901
- Synonyms:
- Alocasia ternata (Thunb.) Raf.
- Arisaema loureiroi Blume
- Arisaema macrourum (Bunge) Kunth
- Arisaema ternatum (Thunb.) Schott
- Arum atrorubens Spreng.
- Arum bulbiferum Salisb.
- Arum bulbosum Pers. ex Kunth
- Arum fornicatum Roth
- Arum macrourum Bunge
- Arum subulatum Desf.
- Arum ternatum Thunb.
- Arum triphyllum Houtt.
- Atherurus ternatus (Thunb.) Blume
- Hemicarpurus fornicatus Nees
- Pinellia angustata Schott
- Pinellia fornicata (Roth) Pritz.
- Pinellia koreana K.Tae & J.H.Kim
- Pinellia tuberifera Ten.
- Typhonium tuberculigerum Schott
- Chinese Common Name: 半夏 bànxià
- Japanese Common Name: カラスビシャク [烏柄杓] karasubishaku, ハンゲ [半夏] hange
- Family: Araceae
- Genus: Pinellia
- Distribution: Grasslands, secondary forests, wastelands, cultivated lands; below 2500 m. Widely distributed in China, excluding Nei Mongol, Qinghai, Xinjiang, and Xizang [Japan (including Ryukyu Islands), Korea; naturalized in Europe and North America].
- Photo: Mt. Siming, Ningbo, Zhejiang
Tuber globose, 1-2 cm in diam. Leaves 2-5; petiole 15-20 cm, base sheathing; bulbils present in sheath, at proximal or middle part of petiole, and at base of leaf blade; leaf blade 3-foliolate, sometimes pedate with 5 leaflets; leaflets greenish abaxially, green adaxially, oblong-elliptic or lanceolate, base cuneate, apex acuminate; anterior leaflet 3-10 × 1-3 cm; lateral leaflets (3-)4-7.5 × 1.8-2.3 cm, with 7-9(or 10) primary lateral veins per side, forming a collective vein along margin. Inflorescence including peduncle longer than petioles, 25-35 cm; peduncle 15-25 cm. Spathe greenish or whitish green, rarely purplish, slightly constricted, 6-7 cm; tube narrowly cylindric, 1.5-2 cm; limb green and usually violet at margin, oblong, 4-5 × ca. 1.5 cm, apex obtuse or acute. Spadix 9-10 cm; female zone ca. 2 cm, adnate to spathe; female flowers densely arranged; pistil 2.1-2.2 mm; ovary ovoid, ca. 1.8 × 1-1.1 mm; style distinct, attenuate; stigma very small, ca. 0.2 mm in diam., not broader than style; sterile zone between female and male flowers ca. 3 mm; male zone 5-7 mm; thecae elongate, ca. 1.2 mm, opening by a slit; appendix erect or sigmoid, green to violet, 6-7(-8) cm. Berries yellowish green to whitish, ovoid, with persistent stigma and style, 1-seeded. Fl. May-Jul, fr. Jul-Sep. 2n = 28, 54, 72, 104, 115, 116, 128. (Flora of China)
