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

14. Pteris baksaensis Ching, Acta Phytotax. Sin. 9: 348. 1964.

白沙凤尾蕨 bai sha feng wei jue

Plants ca. 40 cm tall. Rhizome prostrate, ca. 3 mm in diam., apex with brown, linear-lanceolate scales. Fronds spaced, monomorphic; stipe brown at base, apically straw-colored, ca. 25 cm (stipes of sterile fronds shorter), glabrous, adaxially grooved; lamina digitate, pinnae 3, ca. 20 cm, middle part 6-10 cm; lateral pinnae sessile, opposite, very decumbent, lanceolate, subfalcate, ca. 1.2 cm wide, base slightly oblique, broadly cuneate, margins cartilaginous, sterile fronds entire at base, finely and acutely serrate toward apex, apex acuminate; terminal pinna similar, narrowly lanceolate, up to 22 × ca. 1.4 cm, base symmetrical, cuneate, stalked (1-1.5 cm); lamina gray-green, papery when dried, costae with pallid vertical stripes on both sides on adaxial surface, both surfaces glabrous; costae straw-colored, glabrous, adaxially grooved; veins inconspicuous, dense, parallel, oblique, 1- or 2-forked.

● Forests. Hainan (Baisha).


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