国楣复叶耳蕨 guo mei fu ye er jue

Rhizome ascending, stiff, 2.5-3.5 cm in diam., apex densely scaly; scales reddish brown, narrowly lanceolate with an acicular apex, to 1.5 × 0.3 cm, tortuous or twisted, broader scales with margins denticulate. Fronds approximate, 75-95 cm; stipe ochraceous, 35-48 cm, ca. 7 mm in diam., base and lower parts densely scaly with scales similar to those on rhizome, scales of distal portion of stipe sparser and narrower (to subulate); lamina 2-pinnate-pinnatifid, dull dark green when dried, deltoid-oblong or broadly lanceolate, 45-55 × 24-30 cm, thinly papery, base cuneate, apex acuminate, gradually reduced, rachis scaly as distal portion of stipe; pinnae ca. 11 pairs, alternate or lower 1 or 2 pairs opposite, with to 1.5 cm stalk, obliquely spreading, (lower 3 or 4 pairs oblong-lanceolate, to 25 × 8 cm), base broadly cuneate, apex acuminate; primary pinnules ca. 16 pairs, proximal ones shortly stalked, lanceolate and slightly falcate, to 5 × 1.5 cm, base acroscopically truncate, basiscopically cuneate, margin deeply pinnatifid; lobes to 9 pairs, oblong, to 1.2 × 0.5 cm, apex mucronate, margin entire or serrulate; upper pinnae deltoid-lanceolate or lanceolate, gradually reduced; axes and veins of ultimate segments moderately with minute red-brown threadlike scales abaxially. Sori terminal on veinlets, 1-5 pairs per ultimate segment, closer to midvein than to segment margin; indusia dark brown, thickly membranous, and entire.

● Wet valleys or flat lands in dense rain forests, on slopes in broad-leaved forests; 600-800(-1700) m. S Yunnan (Malipo and Mengla).