3. Cheilanthes nudiuscula (R. Brown) T. Moore, Index Fil. 249. 1861.
隐囊蕨 yin nang jue
Pteris nudiuscula R. Brown, Prodr. 155. 1810; Cheilanthes densa Fée; C. hirsuta (Poiret) Mettenius (1859), not Link (1833); Notholaena hirsuta (Poiret) Desvaux; N. nudiuscula (R. Brown) Desvaux; N. sulcata Link; Pellaea nudiuscula (R. Brown) Hooker; Pteris hirsuta Poiret.
Rhizomes erect, short; scales concolorous, reddish brown, subulate-lanceolate. Fronds clustered. Stipe chestnut-colored, slightly lustrous, 8-12 cm, shallowly grooved adaxially, margins of groove blunt, villous and with sparse linear scales, sometimes glabrescent with age. Lamina oblong to oblong-lanceolate, 10-16 × 2.5-8 cm, 2-pinnate-pinnatifid, papery to somewhat leathery, abaxially moderately to more commonly densely villous to subtomentose with dense, long, multicellular brown hairs, adaxially sparsely to moderately villous with multicellular gray hairs; rachis and costae chestnut-brown, sparsely to densely villous. Pinnae 8-10 pairs; proximal pairs ovate-lanceolate or oblong-lanceolate, 2-4.5 × 1-3 cm, stalked (stalks 3-5 mm), apex rounded or angled, proximal 2-4 pairs inequilateral, basal basiscopic pinnules somewhat larger than acroscopic ones. Ultimate segments sessile, margins shallowly lobed to entire, slightly recurved but not covering sori. Sori ± continuous or sometimes interrupted at segment sinuses, containing several sporangia, embedded in pubescence. False indusium absent. 2n = 168.
On rocks along rivers or rice fields; near sea level to 700 m. Fujian, Guangdong, Guangxi (Nanning), Taiwan [Malesia; Australia, Oceania].