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FOC | Family List | FOC Vol. 2-3 | Dryopteridaceae | Dryopteris

99. Dryopteris liboensis P. S. Wang, X. Y. Wang & Li Bing Zhang, Novon. 22: 256. 2012.

荔波鳞毛蕨 li bo lin mao jue

Plants terrestrial, evergreen, 13-26 cm tall. Rhizomes erect or slightly ascending, 5-7 mm, together with stipe bases densely scaly; scales brown, narrowly lanceolate, 6-12 mm, 0.5-1.2 mm at base, stiff, not bullate, margins entire, apex filiform. Fronds caespitose; stipe brown at base and stramineous upward, 4-14 cm, 0.5-1.5 mm in diam., thin but tough, adaxially sulcate, with a tuft of scales at base, glabrate above; lamina narrowly deltoid to narrowly ovate or lanceolate, 7-14 × 3-7 cm, papery, cordate and 1-pinnate or 2-pinnate at frond base, acuminate and 1-pinnatifid at apex; rachis 0.3-0.5 mm in diam., sparsely scaly abaxially, sulcate adaxially; scales pale brown, narrowly lanceolate and filiform; pinnae 5-12 pairs, shortly stalked or sessile, alternate or opposite, often spreading, deltoid to narrowly ovate, ± falcate, rounded or slightly cordate at base, obtuse at apex; basalmost pinnae largest, 1.4-3.5 × 0.8-1.8 cm, pinnatifid or with basal pinnules sessile, free lobes in 1-3 pairs; pinnae adaxially glabrous, abaxially glabrate, with a few narrowly lanceolate to linear microscales; pinna rachis 0.5-0.8 mm in diam., slightly scaly abaxially; pinna lobes oblong, incised-serrate, obtuse at apex; veins in lobes pinnately branched, lateral veinlets often furcate. Sori orbicular, 1-9 on each side of midrib of fertile pinnae, abaxial or nearly terminal on veinlets, close to margins of pinnae or lamina; indusia brown, peltate, ca. 0.7 mm in diam., lacerate on margin, persistent.

● Shaded sandstone walls in forests by rivers; ca. 500 m. S Guizhou (Libo).


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