生活型

tree

形態特徵

• Medium-sized deciduous trees; branches pale-brown with lenticels.
• Leaves chartaceous or membranaceous when dry, glabrous on both sides, broadly ovate to ovate-rounded, 15–25 cm long, 10–15 cm wide. acute or short cuspidate at apex, rounded at base, entire or rarely undulate at margins, with 3–5 main veins, lateral veins 3–5 pairs, veins prominent beneath; petioles glabrous, 3–10 cm long; stipules broadly lanceolate or ovate, ca. 2 cm long, membranaceous, glabrous, fugaceous.
• Male and gall flowers mixed, feMale appearing alone; Male flowers few, near mouth of receptacle, long-pedicellate, perianth lobes 3–5, stamens 1–2, filaments stout; gall flowers pedicellate, perianth lobes 4–6, ovary smooth, obovoid, style short, sitgma dilated, truncate; feMale flowers sessile or pedicellate, perianth lobes 4, ovary smooth, ovoid, style lateral, longer than in gall flowers, stigma acute.
• Receptacles orange-red or dark-red, solitary or paired, axillary, globose or somewhat depressed-globose, 2.5–3 cm across, glabrous; basal bracts 3, rather thick, persistent, glabrous, 0.5–0.8 cm long.
• This variety resembles the typical phase (midribs, lateral veins, parallel veins of Leaves with golden hairs beneath, petioles and fruit with golden hairs), but differs by its petioles, fruits and lower surfaces of Leaves being glabrous.

分布

• 台灣 : Only on Nanjenshan of the Hengchun Peninsula and Lanyu Island.

引證標本

PINGTUNG: Nanjenshan, Liao 10639, Liu 719; Luliaochi, Hengchun, Su et al. 6906; Chufengbi, Hengchun Su et al. 6912. TAITUNG: Lanyu, Chuang & Hsu 2378, Ho & Huang 75.

引用文獻

• LIAO, JIH-CHING, Flora of Taiwan, second edition 2: 174. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)