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

19. Arachniodes longipinna Ching, Bull. Bot. Res., Harbin. 6(3): 13. 1986.

长羽复叶耳蕨 chang yu fu ye er jue

Arachniodes pseudolongipinna Ching.

Rhizome shortly creeping, stiff, densely scaly; scales blackish brown, linear-lanceolate, ca. 5 × 0.5-1.5 mm, attenuate and hairlike at apex, firmly membranous and spreading. Fronds approximate, 70-85 cm; stipe stramineous, 30-45 cm, 3-5 mm in diam., base with scales similar to those on rhizome, upward with dark brown subulate and remotely denticulate-based appressed scales; lamina 2- or 3-pinnate, dull greenish when dried, oblong, 40-45 × 20-25 cm, papery, base cuneate, apex abruptly narrowed and elongated caudate-acuminate as a terminal pinna, rachis scaly as distal portion of stipe; lateral pinnae 4-6 pairs, alternate or lower 1(or 2) pairs opposite, with to 1 cm stalk, obliquely spreading, remote; lowest pinnae deltoid or linear-lanceolate, ca. 23 × 4-8 cm, base broadly cuneate, apex acuminate; primary pinnules ca. 30 pairs, contiguous, shortly stalked, linear-lanceolate, or oblong and subfalcate, ca. 3 × 0.7 cm, base acroscopically truncate and basiscopically cuneate, apex obtuse or acute, margin pinnatifid or serrate, aristate, sometimes basal pair or only basiscopic one elongated to 8 × 2 cm and pinnate; secondary pinnules shortly stalked or sessile, oblong and slightly falcate, ca. 6 × 3 mm; upper pinnae linear-lanceolate, terminal pinna 21-25 × ca. 5 cm; axes and veins of ultimate segments with minute dark brown, broad-based, and denticulate-margined subulate scales abaxially. Sori small, terminal on veinlets, 6-8 pairs per ultimate pinnule, medial between midvein and margin or closer to midvein; indusia brown, firmly papery, entire or erose.

● Forests; 1000-1100 m. Guangxi (Lingyun).


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