南溪毛蕨 nan xi mao jue

Plants 40-100 cm tall. Rhizomes shortly creeping, including stipe bases with dense dark brown linear-lanceolate scales. Fronds approximate; stipes 15-30 cm, dark stramineous or reddish; laminae 25-70 × 20-30 cm, proximally slightly narrowed, apices acuminate to caudate; lateral pinnae 10-18 pairs, subsessile, proximal 1 or 2 pairs shortened; middle pinnae 5-15 × 1-2 cm, sterile ones usually broader, lanceolate, bases subtruncate or broadly cuneate, lobed to 1/2 toward costae or only serrate, apices long acuminate; segments 15-25 pairs on middle pinnae, oblong, 2-5 × ca. 3 mm, subacute or obtuse at apices; veinlets 5-8 pairs, proximal 1.5-2.5 pairs anastomosing, next 1-1.5 pairs running to sinus membrane. Laminae papery, brownish green or grayish green when dried, adaxially shortly hairy along costae and veins, abaxially with sparse short hairs along costae and veins, with minute hairs throughout. Sori orbicular, medial, proximal pair sometimes confluent; indusia subglabrous or minutely hairy. Sporangia bearing orange glands on stalks. Spores shortly cristate or echinate.

● Wet places in forests; 100-700 m. SE Yunnan (Hekou).