FIGURE 2. Polystichum unicum Li Bing Zhang, N.T in Three new species and one new record of the fern genus Polystichum (Dryopteridaceae) from Vietnam

FIGURE 2. Polystichum unicum Li Bing Zhang, N.T.Lu & Liang Zhang.—A. Adaxial view of upper portion of lamina.—B. Abaxial view of upper portion of lamina.—C. Fiddlehead.—D. Adaxial view of middle portion of lamina.—E. Portion of lamina showing pinnae with microscales.—F. Portion of petiole.—G, H & L. Scales from petiole base, distal petiole, and rachis, respectively.