TABLE 1. Morphological comparison among Polystichum napoense, P. malipoense, P. articulatipilosum, P. recavum, P in Polystichum napoense (Dryopteridaceae), a new cave-dwelling fern species from Guangxi, China

TABLE 1. Morphological comparison among Polystichum napoense, P. malipoense, P. articulatipilosum, P. recavum, P. puteicola, and P. minutissimum. CharactersP. napoenseP. malipoenseP. articulatipilosumP. recavumP. puteicolaP. minutissimumFronds per plant6–155–145–15 (–20)6–214–76–9Petiole length (mm)15–35150–18020–605–1920–603.4–8Petiole scaleslong triangular to lanceolate, 1.5–3 × 0.5–1 mmovate-lanceolate, 2.2–2.8 × 1–1.5 mmlanceolate, 1–1.5 × 0.25–0.5 mmlanceolate to oblong- lanceolate, ca. 2 × 0.4–0.5 mmovate-lanceolate, 3.6–4.5 × 1.1–2.3 mmlanceolate, 1–1.5 × 0.35–0.55 mmLamina shapelanceolatelanceolateoblong-lanceolateoblanceolatelanceolateshortly lanceolatePinnae per lamina10–2516–194–1110–276–145–8Pinnaerhomboidal or deltoidovate, chartaceousoblique-deltoid, subcoriaceousoblong or obliquely ovate- oblong, texture paperyoblong, subquadrangular, ovate or flabellate, paperyoblong, subcoriaceousnearly rectangular, thinly chartaceousPinnae scalesboth surfaces scalyabaxially with microscales, adaxially glabrousboth surfaces are densely covered with long brown articulate hairsabaxially loosely scaly, adaxially glabrousabaxially scaly, adaxially lustrous and glabrousabaxially scaly, adaxially glabrousIndusiaabsentrounded, ca. 1 mm diam., margins eroseabsentsmall, ca. 0.6 mm in diam., margin lacerate and ciliatepeltate, 0.8–1.2 mm in diam., margin erosepeltate, ca. 0.7 mm in diam., margin erose.Sori per fertile pinna8–13 (3–5 below midrib, 5–8 above midrib)5–6 below midrib, 5–13 above midrib3–6 (1–3 below midrib, 2–4 above midrib)1–5 (1–4 above midrib, often one or sterile below midrib)5–9 (1–3 below midrib, 4–6 above midrib)1–3 (or 4)DistributionNapo, SW. GuangxiMalipo, SE. YunnanFengshan, NW. GuangxiJinxi, W. GuangxiBijie, NW. GuizhouLibo, S. Guizhou