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Type: Correspondence
Published: 2015-12-16
Page range: 283–287
Abstract views: 23
PDF downloaded: 1

Pteris langsonensis (Pteridaceae), a new brake fern species from Lang Son Province, northern Vietnam

Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166-0299, U.S.A.
Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China Department of Botany, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18th Hoang Quoc Viet Road, Cau Giay, Ha Noi, Việt Nam
Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166-0299, U.S.A.
Pteridaceae Pteridophytes fern species Vietnam

Abstract

A new fern species, Pteris langsonensis belonging to the P. cadieri complex (Pteridaceae), is described and illustrated from Lang Son Province, northern Vietnam. P. langsonensis is most similar to P. plumbea, but the former has typical dimorphic leaves and fertile pinnae much contracted and with a width of no more than half of sterile pinnae, while the latter has slightly dimorphic leaves. The new species is also similar to P. cretica, but the former has smaller habit and slightly toothed sterile leaf margins.