Compilation
Drynaria volkensii

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Name

Identification
Polypodium willdenowii Bory [family POLYPODIACEAE ] Verified by Roos, M.C., Drynaria volkensii Hieron. [family POLYPODIACAE ] (stored under name); Verified by Not on sheet.,
Related name
  • Drynaria volkensii
  • `
  • Polypodium willdenowii

Flora

Entry for DRYNARIA volkensii Hieron. [family POLYPODIACEAE]
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, (2001) Author: B. Verdcourt, B.Sc., Ph.D.
Names
DRYNARIA volkensii Hieron. [family POLYPODIACEAE], in V.E. 2: 57 (1908) nomen & in E.J. 46: 393 (1911); F.D.-O.A.: 34 (1929); Tardieu in Mém. I.F.A.N. 28: 214 (1953); Alston, Ferns W.T.A.: 48 (1959); Tardieu, Fl. Cameroun 3, Ptérid.: 336, t. 53/4–6 (1964); Schelpe in Contr. Bolus Herb. 1: 93 (1969); Schelpe, F.Z., Pterid.: 149, t. 46 (1970) & Expl. Hydrobiol. Bassin L. Bangweolo & Luapula 8 (3) Ptérid.: 65, fig. 21 (1973); Faden in U.K.W.F.: 70 (1974); Kornaś, Distr. Ecol. Pterid. Zambia: 75, fig. 44b (1979); Schelpe & M.A. Diniz, Fl. Moçamb., Pterid.: 152 (1979); Pic. Serm. in B.J.B.B. 53: 209 (1983); M.C. Roos, Phylog. Syst. Drynarioideae: 268 (1985); Faden in U.K.W.F. ed. 2: 22 (1994). Lectotype: Tanzania, Moshi District, Kilimanjaro, Marangu, Volkens 735 (B, lecto., K!, isolecto.)
DRYNARIA willdenowii Hieron. var. fuscopaleacea [family POLYPODIACEAE], in E.J. 28: 347 (1900). Types: Tanzania, Iringa District, Uzungwa Mts, near Fikongono, Goetze 619, 620 (B, syn.)
DRYNARIA volkensii Hieron. var. macrosora [family POLYPODIACEAE], in E.J. 46: 394 (1911). Type: Congo (Kinshasa), Nyiragongo [Ninagongo] not far from Kisenyi [Kissenge], Mildbraed 1288 (B, lecto.)
DRYNARIA laurentii [family POLYPODIACEAE], [sensu Chiov., Racc. Bot. Miss. Consol. Kenya: 149 (1929), non (H. Christ.) Hieron.]
DRYNARIA propinqua [family POLYPODIACEAE], [sensu F.D.-O.A.: 33 (1929), non (Mett.) Bedd. (no specimens cited but gives Kilimanjaro as locality)]
DRYNARIA volkensii Fiori var. uondensis [family POLYPODIACEAE], in Nuov. Giorn. Bot. Ital. 47: 25 (1940). Type: Ethiopia, between Uondo & Agheresalam, Saccardo s.n. (FT, holo.)
DRYNARIA saccardoi Cufod. [family POLYPODIACEAE], in Senck. Biol. 50: 256 (1949), as saccardi . Type: Ethiopia, Bera, Kuls 215 (FR, holo.)
Information
Rhizome up to 1 cm (1.5 cm in life) in diameter, creeping, often encircling the boles of large trees, with spaced fronds and with dark brown rhizome-scales up to 6 mm long, broadened and peltate at base, strongly tapering, shortly spinulose at margins throughout. Sterile fronds up to 24(–30) cm long, up to 18 cm wide, sessile, erect, ovate in outline, chartaceous, with prominent veins, pinnatifid into narrowly oblong acute to obtuse lobes, glabrous except for minute brown laciniate scales along the midrib. Fertile fronds 0.3–1 m long, erect to arching, firmly herbaceous, stipitate; stipe pale brown, up to 37 cm long, 0.3–0.4 cm in diameter, glabrous; lamina up to 73 cm long and 44 cm wide, ovate-oblong in outline, with a narrow wing decurrent on to the stipe, pinnatifid almost to the midrib into linear-oblong acute-acuminate lobes up to 23 cm long, up to 4.5 cm wide with abruptly broadened adnate bases, margin minutely and irregularly notched, thinly set with brown laciniate scales when young, glabrous at maturity. Sori orange, 2–2.5 mm in diameter, round, borne close to the costa, about 3 mm apart. Fig. 3/1–3 (p. 12) & 4 (p. 13).
Range
DISTR. U 1, 2, 3, 4; K 3–5; T 2, 4, 6, 7 widespread in tropical Africa from Cameroon, Bioko, Congo (Kinshasa), Rwanda, Burundi, Sudan (Imatongs), Ethiopia, Somalia (fide Tardieu-Blot), Zambia, Malawi and Mozambique
Altitude range
1200–2700 m
Distribution
UGANDA Toro District Lake Mutanda, Mushongero, Dec. 1938, Chandler & Hancock 2529!KENYA Trans-Nzoia District Cherangani Hills, Kapolet, Nevile’s Farm, May 1964, Tweedie 2799!TANZANIA Arusha District Arusha National Park, Mt Meru, Jakukumia, 10 Mar. 1971, Richards 26716!UGANDA Mbale District Elgon, Bulago, 29 July 1917, Snowden 518! & Bugisu [Bugishu], Buginyanya, 29 Aug. 1932, A.S. Thomas 366!KENYA Kiambu District Limuru, Feb. 1915, Dummer 1716!KENYA Kericho District Sotik, Chepalungu Forest, Feb. 1931, Gardner in F.D. 2536!TANZANIA Ufipa District Pito, 2 Nov. 1949, Bullock 1938!TANZANIA Kilosa District Ukaguru Mts, Mamiwa Forest Reserve, ridge to N Mandego Forest Station, 2 Aug. 1972, Mabberley 1344!TANZANIA Iringa District Mufindi, Luisenga R., 16 Mar. 1962, Polhill & Paulo 1778!
Notes
Roos dates D. volkensii from 1908 but in my view there is no description and Hieronymus says “can be separated off as D. volkensii if one places importanceon...”

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