Aspidium cystostegia Hook.

, Sp. Fil. [W. J. Hooker] 4: 26, t.227 (1862). BHL
IPNI Life Sciences Identifier (LSID)
Species Filicum
4: 26, t.227
Date of Publication
Family as entered in IPNI

Type Information

‘Hab. New Zealand, on elevated mountains : Northern Island. Dieffenbach [s.n., s.d.]; Middle Island, Discovery Peaks, 5800 feet, Travers [s.n.. s.d.]; Rocks in Waira gorge, alt. 4400 feet, in extremely exposed cold situations, Sinclair [s.n., s.d.]. Between Lake Tennyson and the west coast, C. Mailing [s.n., s.d.]'
Distribution Of Types
New Zealand (Australasia)


The epithet cystostegia is a noun in apposition. Etymology: Greek cystis, bladder, sac, and stegos, roof, lid [protologue: ‘the involucres are unlike those of any other species, being singularly thin and membranaceous, covering the sori with a large (in proportion to the size of the plant) hemispherical peltate bladdery lid.’]


Basionym of
Polystichum cystostegia (Hook.) J.B.Armstr., Trans. & Proc. New Zealand Inst. 13: 364 (1881).