Acystopteris tenuisecta (Blume) Tagawa
  • Acta Phytotax. Geobot.

This taxon is accepted by Cystopteridaceae
Notes: More details could be found in The Plant List v.1.1. Originally in The Plant List v.1.0

General Description

Rhizome creeping, 2-5 mm in diam., with sparse brownish, lanceolate, thinly membranous scales. Fronds approximate; fertile frond (22-)65-80(-150) cm; stipe pale stramineous, (7-)30-40(-90) cm, (1.5-)3-4(-5) mm in diam. at base, grooved adaxially, clothed with brownish lanceolate scales and sparse multicellular hairs at base; lamina 3-pinnate, ovate to ovate-lanceolate, (14-)35-50(-70) × (7-)20-25(-60) cm, herbaceous, base subcordate, apex acuminate; pinnae 15-20 pairs, subopposite, subsessile or shortly stalked, broadly lanceolate to lanceolate, acuminate, slightly falcate, equilateral, base subtruncate; basal 1 or 2 pairs broadly lanceolate, (3.5-)15-20(-33) × (2-)4-8(-20) cm, base subtruncate or rounded-cuneate, apex long acuminate; pinnules 10-25 pairs, basal pair slightly shorter, acroscopic pinnule slightly shorter than basiscopic, broadly lanceolate, (1-)2.5-5(-10) × (0.4-)1-2(-3) cm, base truncate, sessile, apex obtuse or acuminate; pinnule segments oblong, 4-10 × 2-3 mm, sessile or ± adnate, lobed, obtuse; veins pinnate in segment, simple or forked. Orange or yellow small glands borne on abaxial surface and at indusium margin, hyaline multicellular long hairs present on veins, costules, costae, rachis, and stipe, and subulate scales adaxially. Sori orbicular, abaxial on basal acroscopic veins; indusia small, pale green, broadly ovate, membranous, proximal to sorophore, hidden by sori at maturity, persistent. Spores yellow, bean-shaped or narrowly spheroidal, perispore with dense inflated, bulbous processes. 2n = 82, 84, 168.

 Information From

World Flora Online Data. 2017.
  • A CC0 1.0 Universal (CC0 1.0).
Flora Of CHina @
'Flora of China @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  • B Missouri Botanical Garden
World Flora Online consortium
World Flora Online Data. 2018.
  • C CC0 1.0 Universal (CC0 1.0).