生活型

herb

形態特徵

• Annual herb; stems erect or nearly so, 12–16 cm long, simple,green, sometimes tinged with purple.
• Radical leaves obovate to oblanceolate, 8–10 cm long, 2.5–3.5 cm wide, obtuse or acute at apex, narrowed at base, 1–3 pinnately lobed, lobes irregular, petioles slender, 1.2–2.5 cm long, somewhat winged; cauline leaves small and unlobed or less lobed.
• Inflorescences terminal or axillary racemes, few-flowered, 4–6 cm long; pedicels short or flowers subsessile; sepals 4, oblong, 3–3.5 mm long, 1.2–1.6 mm wide, acute at apex, green, tinged with purple; petals absent; stamens indi-stinctly tetradynamous, filaments short, 2–2.5 mm long, anthers 0.7 mm long; ovary 1–1.2 mm long, somewhat pubescent, style short, stigma rounded.
• Siliques narrowly cylindrical, 2–3 cm long, 1–1.2 mm across. Seeds many, rounded, 0.6 mm across, brown when mature.

分布

• 台灣 : known from low altitudes in the eastern part of the island, not common.
• 世界 : Japan and the Ryukyus.

引證標本

HUALIEN: Hualien, Chen s. n. 1977, Chen 3202.

引用文獻

• YING, SHAO-SHUN, Flora of Taiwan, second edition 2: 766. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)