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

25. Pteris venusta Kunze, Bot. Zeitung (Berlin). 6: 195. 1848.

爪哇凤尾蕨 zhao wa feng wei jue

Pteris matsudai Masamune.

Plants 50-80 cm tall. Rhizome erect, short, robust, 1.5-2 cm in diam., apex with brown scales. Fronds clustered; stipe straw-colored, seldom brown or castaneous, slightly lustrous, 30-50 cm × 3-4 mm, glabrous, basal part scaly, scales caducous; lamina 1-pinnate, oblong-ovate, 35-45 × 25-30 cm; pinnae (3 or)4-6 pairs, opposite, decumbent, linear-lanceolate, 15-20 × 2-3.2 cm, basally broadly cuneate, margin entire, slightly undulate, obviously reflexed, and cartilaginous, apex long caudate; basal pair shortly stalked, middle pairs sessile, upper pairs often connate with rachis and ± decurrent to form narrow wings; terminal pinna with 3 pinnules, not decurrent or slightly decurrent at base; basal pinnae not shortened, lowest 1 or 2 pairs often with basiscopic pinnule; lamina gray-green, thinly herbaceous when dried, glabrous, shiny especially adaxially, smooth; midvein abaxially convex, light straw-colored; veins slender, contiguous, slightly raised on both surfaces, often simple or rarely forked at base.

Acidic soils in open forests; 800-1500 m. ?SW Taiwan (Gaoxiong), Yunnan [Bhutan, Cambodia, India, Indonesia, Laos, Malaysia, N Myanmar, Nepal, Thailand, Vietnam].

Fraser-Jenkins (Taxon. Revis. Indian Subcontinental Pteridophytes, 103. 2008) and Knapp (Ferns Fern Allies Taiwan, 368. 2011) treated Pteris venusta as a synonym of P. pellucida C. Presl.


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