生活型

herb

形態特徵

• A perennial herb. Stems ascending or erect, sparsely hirsute; stipules gland-like.
• Leaves ovate to lanceolate, 30–12 mm long, 1–6 mm wide, acute to subacuminate at apex, obtuse to rounded at base, serrulate to entire at margin, puberulent on both surfaces; petioles slender, 4–12 mm long, hirsute.
• Cyathia in terminal compound dichasia; bracteal leaves green or pale at base, leaf-like; involucre elongate-turbinate, 2.1–3.1 mm long, sparsely puberulent abaxially at apex, stalks 1.2–7.4 mm long, the lobes ovate, denticulate to cleft at apex, puberulent at margin; glands 1 or rarely 2, yellow, more or less funnel-like, the opening circular, 0.5–1 mm in diam.; bracteoles linear to oblanceolate, fringed. Male flowers 15–30, anther yellow. Female flowers with puberulent ovary, styles and stigmas 1.2–1.4 mm long.
• Capsules 5–5.7 mm long, 3.6–4.1 mm in diam., puberulent. Seeds brownish or grayish, truncate-ovoid, 2.5–2.9 mm long, 2.1–2.3 mm wide, tuberculate; caruncle small, black.

分布

• 台灣 : It grows in waste places, riversides and trailsides in Taiwan.
• 世界 : E. heterophylla is native from southern United States to the West Indies and Argentina, and naturalized in the Old World Tropics.

引證標本

TAOYUAN: Upper Paling to Lalashan, Peng 11019. HSINCHU: Hengshan, Peng 12126. TAICHUNG: Tatushan, Yang 801. NANTOU: Aowantai, Chen 9600. CHANGHUA: Shengkang, Lin & Li 49. PINGTUNG: Oluanpi to Chialoshui, Ying s. n. 1985 (Type of Euphorbia taiwaniana Ying, NTUF!). TAITUNG: Kuanshan, Lu 19217; Is. Lanyu, Shuangshihyen to Hontou, Lin 772.

參考文獻

• HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 3: 414. .  (Fl. Taiwan 2nd edit.)