生活型

herb

形態特徵

• Perennial herb with simple, furcate or short stellate hairs, 20–35 cm tall, branched above.
• Radical leaves, 4–6 cm long, 2–2.5 cm wide, rounded at apex, the margins irregularly dentate, denticulate or nearly entire, cauline leaves smaller, oblong, obtuse at apex, auriculate at base, l.5–2.5 cm long, 7–12 mm wide.
• Flowers in terminal racemes, white, pedicellate; pedicels ca. 7 mm long; sepals obovate or oblong, 3 mm long, 1–1.5mm wide, obtuse, 5-nerved; petals obovate-cuneate, 5 mm long, 2 mm wide; stamens 6, 4 mm long; stigma subsessile, 2-lobed.
• Siliques linear, erect, 3.5–5 cm long, 2 mm wide, obtuse at both ends.

分布

• 台灣 : known from medium to high altitudes of 1,500–3,800 m throughtout the island, exposed fields.
• 世界 : Northern America, Alaska, Aleutian Islands, Kamchatka, Sakhalin, Jilin, Korea and Japan.

引證標本

ILAN: Taipingshan, Hosokawa s. n. 1931; Nanhutashan, Sasaki s. n. 1922. HSINCHU: Tapachienshan, Sasaki s. n. 1932; Luchangtashan, Kawakami & Mori s. n. 1911. TAICHUNG: Hsueshan, Sasaki s. n. 1932. NANTOU: Hohuanshan, Ying 1133. CHIAYI: Mt. Morrison, Kanehira & Sasaki s. n. 1918; Sangyang, Ying 1038.

引用文獻

• YING, SHAO-SHUN, Flora of Taiwan, second edition 2: 747. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)