生活型

herb

形態特徵

• An annual.
• Leaves broadly rhombic, 3–4 cm long, acute at apex, broadly cuneate at base, irregularly toothed towards apex, entire towards base, glabrous above, densely pubescent beneath; petioles 5–10 cm long, pubescent to nearly glabrous.
• Flowers white.
• Fruit more or less tetrahedral, 3–3.5 cm long, the horns 4, sharp.

分布

• 台灣 : In the central region.
• 世界 : Japan and Taiwan.

引證標本

NANTOU: Sun Moon Lake, Kudo & Sasaki 15316; Lienhuachi, Kudo & Yamamoto s. n, July 5, 1930.

參考文獻

• HSIEH, CHANG-FU, Flora of Taiwan, second edition 3: 968. 1993.  (Fl. Taiwan 2nd edit.)