New species and records of grammitid ferns (Polypodiaceae) for Vietnam Author Parris, Barbara Fern Research Foundation, 21 James Kemp Place, Kerikeri, Bay of Islands 0230, New Zealand Author Chen, Cheng Wei Department of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan Author Hsu, Tian Chuan Department of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan Author Lu, Thi Ngan Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam Author Nguyen, Quoc Dat Southern Institute of Ecology, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam Author Luu, Hong Truong Southern Institute of Ecology, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam text Phytotaxa 2015 2015-09-09 226 1 39 50 http://dx.doi.org/10.11646/phytotaxa.226.1.4 journal article 10.11646/phytotaxa.226.1.4 1179-3163 13636212 Scleroglossum 1a Lamina margin thin; sori in grooves on abaxial surface of lamina, not submarginal .................................................... S. sulcatum 1b Lamina margin thick, sori in submarginal grooves .......................................................................................................................... 2 2a Lamina not narrowed below sori or, if narrowed, more than 2 mm wide ................................................................ S. pusillum 2b Lamina narrowed below sori, up to 2 mm wide ................................................................................................... S. pyxidatum