生活型

herb

形態特徵

• A perennial herb. Stems ascending or erect, glabrous to sparsely puberulent; stipules gland-like.
• Leaves pandunate, ovate to ovate-lanceolate, 40–93 mm long, 2–4.2 mm wide, acute to obtuse at apex, cuneate to rounded at base, entire to serrulate or dentate at margin, glabrous to sparsely puberulent above, puberulent below; petioles slender, 5–17 mm long, puberulent.
• Cyathia in terminal compound dichasia; bracteal leaves usually red, rarely pale yellow at base, leaf-like; involucre elongate-turbinate, 3–4.6 mm long, glabrous abaxially, stalks 1.2–17 mm long, the lobes depressed ovate, cleft to subsinuate at apex, sparsely puberulent at margin; glands 1 or rarely 2, yellow, more or less bilabiate, the opening narrowly oblong; bracteoles linear to oblanceolate, fringed. Male flowers 35–60, anthers yellow. Female flowers with glabrous ovary, styles and stigmas 1–1.5 mm long.
• Capsules 4.1–5.2 mm long, 3.5–3.9 mm in diam., glabrous. Seeds brownish or blackish, ovate-ellipsoid, 2.6–3 mm long, 2–2.5 mm in diam., tuberculate, ecarunculate.

分布

• 台灣 : Local populations occur in waste places or roadsides of coastal areas in Taiwan.
• 世界 : E. cyathophora is native from eastern and southern United States to northern South America and West Indies and naturalized in the Old World.

引證標本

HSINCHU: Nanliao, Lin et al. 256. TAICHUNG: Taichungkang, Lin 835. YUNLIN: Santiaolun, Lin & Li 136. TAINAN: Tianan, Lin et al. 394. KAOHSIUNG: Chungchou, Chang & Chang 6815. PINGTUNG: Kenting to Nanwan, Lin & Wang 569; Hsiaoliuchiu, Lin et al. 78. PENGHU: Makung, Chung 438. TAITUNG: Sanhsientai, Lu 19320.

參考文獻

• HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 3: 458. .  (Fl. Taiwan 2nd edit.)