Compilation
Cystopteris fragilis

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Name

Identification
Cystopteris fragilis (L.) Bernh. [family WOODSIACEAE ] (stored under name); Verified by Not on sheet,
Related name
  • Cystopteris douglasii
  • Aspidium rheticum
  • Polypodium fragile
  • `
  • Hypopeltis occidentalis
  • Aspidium viridulum
  • Polypodium rhaeticum
  • Aspidium regium
  • Cystopteris not on sheet
  • Cystopteris alpina
  • Cystopteris acuta
  • Cystopteris fragilis
  • Aspidium fragile
  • Cystopteris translucens
  • Cyathea indet.

Flora

Entry for CYSTOPTERIS fragilis (L.) Bernh. [family WOODSIACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, page 1, (2003) Author: BERNARD VERDCOURT
Names
CYSTOPTERIS fragilis (L.) Bernh. [family WOODSIACEAE], in Schrad., Neues J. Bot. 1(2): 27 (1805); Pirotta in Il Ruwenzori, Parte Scient. 1: 428 (1909) (sensu lato); Sim, Ferns S. Afr. ed. 2: 88, t. 8 (1915) (sensu lato); A.V.P.: 27 (1957) (sensu lato); Alston, F.W.T.A.; Pterid.: 64 (1959) (sensu lato); Blasdell in Mem. Torrey Bot. Club 21(4): 38 (1963) (sensu stricto); W. Jacobsen, Ferns S. Afr.: 402, t. 302 (1983) (sensu lato); Schelpe & N.C. Anthony, F.S.A., Pterid.: 229, fig. 76/2 (1986) (sensu lato); Derrick, Crabbe & Jermy in Sommerfeltia 6: 62 (1987) (sensu stricto); J. Burrows, S. Afr. Ferns: 279, t. 46.5, fig. 65/284, 284a (1990) (sensu lato); Crabbe & Jermy in Fl. Eur. ed. 2, 1: 24 (1993) (sensu stricto); Faden in U.K.W.F. ed. 2: 33 (1994). Type: Plukenet, Almagestum botanicum: 150, t. 180, fig. 5 (1696) (lecto., chosen by Weatherby in Rhodora 37: 376 (1935))
Polypodium fragile L. [family POLYPODIACEAE], Sp. Pl. ed. 1: 1091, (1753) (as P.F. fragile)
Information
Rhizome shortly creeping or ± erect with reddish brown glabrous lanceolate scales 3 mm long, 0.6 mm wide, sometimes with marginal glands. Fronds ± tufted or closely spaced; stipe usually shorter than the lamina, straw-coloured to dark brown, 3–20 cm long with lanceolate scales at the base. Lamina lanceolate to ovate-lanceolate, 5–30 cm long, 1.5–14 cm wide, 1–3-pinnate and 3(–4)-pinnatifid; rachis and axes with scattered multicellular glandular hairs; pinnae in 4–20 pairs, ovate to ovate-lanceolate, 0.6–1.8 cm long, 0.5–4 cm wide, basal secondary pinnae shortly petiolate, remainder adnate, ovate to lanceolate, obtuse to acute with apices of the lobes with rounded or acute teeth; veins directed into teeth or sinuses. Sori round, discreet to overlapping at maturity; indusia bladder-like, ovate to oblong or cup-shaped, dentate to lacerate.
Notes
Blasdell records C. fragilis var. fragilis from eastern Africa (op. cit., p. 39) but cites nothing in his list of specimens.

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