Compilation
Pteris biaurita

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Name

Identification
Pteris biaurita (Link) Kuhn [family PTERIDACEAE ] Pteris hildebrandtii Hieron. [family PTERIDACEAE ] (stored under name);
Related name
  • Pteris villosa
  • Pteris flava
  • Pteris biaurita
  • `
  • Pteris quadriaurita
  • Pteris swartziana
  • Pteris catoptera
  • Pteris nemoralis
  • Pteris hamulosa
  • Pteris acanthoneura
  • Pteris dubia
  • Pteris friesii
  • Pteris pungens
  • Pteris hildebrandtii
  • Lonchitis hirsuta
  • Pteris repandula
  • Pteris edentula
  • Pteris trachyrachis
  • Pteris pectinata

Flora

Entry for PTERIS mildbraedii Hieron. [family ]
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, (2002) Author: BERNARD VERDCOURT
Names
PTERIS mildbraedii Hieron. [family ], in E.J. 53: 415 (1915); Tardieu in Mém. I.F.A.N. 28: 77, t. 12, figs. 4–5 (1953); Alston, Ferns W.T.A.: 42 (1959); Tardieu, Fl. Cameroun 3: 165, t. 23, figs. 4–5 (1964) & Fl. Gabon 8: 112 (1964); Schelpe, Contrib. Bolus Herb. 1: 63 (1969). Type: Cameroon, 58 km E of Kribi, Mildbraed 5986 (B, holo.)
PTERIS biaurita Bonap. var. africana [family ], Not. Ptérid. 1: 61 (1915). Type: Congo (Brazzaville), Benito, Reutlinger s.n. (P, holo.)
PTERIS sp. (sub P. atrovirens) [family ], ; Schippers in Fern Gaz. 14: 185 (1993)
Information
Rhizome short, erect, with lanceolate scales usually dark in the middle, pale at the margins, 3–4 mm long. Fronds tufted, ± 1 m tall. Stipe 50–75 cm long, scaly at the base, quite distinctly to almost imperceptibly spinulose or muriculate. Lamina oblong, 40 cm long and wide, simply pinnate with 2–7 pairs of pinnae. Pinnae oblanceolate or lanceolate-oblong, 14–40 cm long, 5–12 cm wide with 14–27 pairs of oblong to oblong-lanceolate ultimate segments 0.7–3(–6) cm long, 3–8(–15) mm wide, rounded to subacute at the apex, the sterile tips dentate; apical segment triangular-lanceolate, 2–6.5 cm long, 9 mm wide, crenulate at tip; rhachis, costae and costulae not spinulose; veins free in the lobes or with very sparse anastomosis; costal areoles narrow. Sori 1–1.7 cm long; paraphyses present.
Range
DISTR. T 7
Altitude range
750–900 m
Distribution
TANZANIA Iringa District Mwanihana Forest Reserve, above Sanje Village, 30 Aug. 1984, D.W. Thomas 3695! & Uzungwa Mts National Park, Mwaya to Mwanihana route, 5 Nov. 1997, P.A. & W.R.Q. Luke 4914 B!
Distribution (external)
; Ghana
Benin
Nigeria
Equatorial Guinea
Bioko
Cameroon
Congo (Brazzaville)
Congo (Kinshasa) (see note)
Notes
I am not entirely certain of the identity of these with the W African plants since there is slight anastomosis of veins in the ultimate segments in at least one of the specimens cited above (3695), rather more pinnae and only traces of murication on the stipe. Schelpe suggests P. dubia Kuhn (in van der Decken’s Reisen 3 (3) Bot.: 71 (1879)). Type: Comoro Is., Mwali [Johanna], Hildebrandt 1763 (K!, iso.) could be conspecific with P. mildbraedii and is a much older name. I have only seen the isotype and a specimen from I. Mayotte, Barkly s.n. and am not convinced; the Comoro material has the ultimate segments narrowly acute or attenuate. They are clearly very closely allied.

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