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FOC | Family List | FOC Vol. 2-3 | Pteridaceae | Pteris

2. Pteris undulatipinna Ching, Acta Bot. Austro Sin. 1: 3. 1983.

波叶凤尾蕨 bo ye feng wei jue

Plants 40-60 cm tall. Rhizome erect, short, ca. 1 cm in diam., scaly at growing tips. Fronds dimorphic; stipe light straw-colored, 15-20 cm × ca. 1.5 mm. Sterile fronds: lamina linear, up to 40 × ca. 1 cm, base sterile and slightly undulate, apex caudate and slightly serrulate. Fertile fronds 3-forked, terminal pinnae linear, 25-30 × 1-1.5 cm, basally cuneate, sessile, separate, margin entire at base, revolute, spreading serrate upward, apex long acuminate; lateral pinnae as apical pinna but shorter, somewhat falcate. Lamina pale green, thinly papery when dried, glabrous with black longitudinal striation ca. 4 mm wide on both sides along midvein; midvein light straw-colored, abaxially convex; veins simple or 2-forked.

● Bamboo forests; ca. 900 m. S Yunnan (Mengla).


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