Cystopteris fragilis (L.) Bernh.
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Cystopteris fragilis (L.) Bernh., Neues J. Bot. 1(2): 27 (1805)
Cystopteris fragilis (L.) Bernh.
Nomenclature
(L.) Bernh.
L.
Bernh.
1805
27
ICN
species
Cystopteris fragilis
Classification
Subordinates
Vernacular names
Descriptions
Cystopteris fragilis (L.) Bernh.
Rhizome rather stout to slender, shortly creeping, us. with ascending branches; clad in pale brown to reddish ovate- to lanceolate-attenuate paleae, c. 2-5 mm. long; stipites clustered at tips of branches. Stipes slender to filiform, 2-15-(20) cm. long, stramineous to rather dark brown, shining, nude except at very base. Rhachis very slender, naked, narrowly winged in upper part. Lamina delicate, flaccid, pale green, narrow-lanceolate to ovate-lanceolate, pinnate to subbipinnate, 3-25 × 1-5 cm., often bearing sori in smallest state. Pinnae distant, alt. to subopp., lower shortly stalked, upper sessile and decurrent, 5 mm.-4 cm. × 4-15 mm. Shape various: ovate, pinnatifid, lobes crenately toothed to entire; ovate- to lanceolate-oblong, pinnatisect, lobes crenately toothed; ovate-oblong, again pinnate in lower, pinnatifid in upper portion, crenate-dentate, with secondary pinnae ovate-oblong up to 1 × 1cm., cuneately narrowed at base, lobes sts incised. Sori medial, 1-4 per lobe, 1-2 mm. diam., sts approximate to confluent. Indusium caducous, ovate, entire to ovate-oblong, shallowly toothed to subentire.
Cystopteris fragilis (L.) Bernh.
Rhizomes short, horizontal, scaly. Stipes 5-15 cm long, dark brown and scaly at base, straw-coloured and ± glabrous above. Laminae narrowly ovate, ovate or narrowly triangular, 10-30 × 6-14 cm, 2-3-pinnate at base, glabrous. Primary pinnae in 15-25 pairs, ovate to ± triangular, tapering at apices, the longest 3-8 × 1.5-4 cm. Secondary pinnae in 5-12 pairs, ovate to ± oblong, acute, to 2 × 1 cm, those on upper primary pinnae bluntly toothed, those on basal primary pinnae deeply incised or divided into tertiary pinnae. Sori rounded, protected by ovate indusia arching over sporangia.
Taxonomic concepts
Cystopteris fragilis (L.) Bernh.
Cystopteris fragilis (L.) Bernh.
Cystopteris fragilis (L.) Bernh.
Cystopteris fragilis (L.) Bernh.
Cystopteris fragilis (L.) Bernh.
Cystopteris fragilis (L.) Bernh.
Cystopteris fragilis (L.) Bernh.
Cystopteris fragilis (L.) Bernh.
Cystopteris laciniatus Colenso
Cystopteris fragilis (L.) Bernh.
Polypodium fragile L.
Cystopteris fragilis (L.) Bernh.
Collections
Metadata
da66b84f-abf7-4833-bb50-476dc658779a
scientific name
Names_Plants
1 January 2000
12 August 2019