Compilation
Adiantum zollingeri

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Name

Identification
Isotype of Adiantum zollingeri Mett. ex Kuhn [family PTERIDACEAE ] (stored under name); Verified by J.E. Bommer,
Related name
  • Adiantum zollingeri

Flora

Entry for ADIANTUM incisum Forssk. [family ADIANTACEAE]
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
ADIANTUM incisum Forssk. [family ADIANTACEAE], Fl. Aegypt.-Arab.: 187 (1775); Pic. Serm. in Webbia 12: 669, fig. 6, 7/a, a (1957); Tardieu, Fl. Madag. 5 (1): 130 (1958); Alston, Ferns W.T.A.: 39 (1959); Verdc. in Journ. E. Afr. Nat. Hist. Soc. 24: 38, fig. 3b (1962); Tardieu, Fl. Gabon. 8: 106, t. 17/2, 3 (1964); Launert in Prodr. Fl. S.W. Afr. 6: 1(1969); Schelpe in Contr. Bolus Herb. 1: 52 (1969) & F.Z., Pterid.: 108, t. 36/c (1970); Lye in Uganda Journ. 34: 66, fig. 3/a–d (1970); Faden in U.K.W.F.: 32, 42 (fig.) (1974); Schelpe, C.F.A. Pterid.: 85 (1977); Schelpe & M.A. Diniz, Fl. Moçamb., Pterid. 107 (1979); Kornaś, Distr. Ecol. Pterid. Zambia: 63, fig. 36a (1979); W. Jacobsen, Ferns S. Afr.: 223, fig. 156, map. 52 (1983); Schelpe & N.C. Anthony, F.S.A., Pterid.: 100, fig. 29/1, map 26 (1986); J.E. Burrows S. Afr. Ferns: 118, t. 18/2, fig. 118, 118a, map (1990); Schippers in Fern Gaz. 14: 183 (1993); Thulin, Fl. Somalia: 1: 12 (1993); Faden in U.K.W.F. ed. 2: 19, t. 170 (1994). Type: Yemen, Al Hadiyah [Hadie], Forsskål s.n. (C, lecto, K!, photo) (specimen with original field label – not on microfiche).
ADIANTUM capillus-gorgonis Webb [family ADIANTACEAE], Spic. Gorg. in Hook., Niger Fl.: 192 (1849). Type: Cape Verde Is., St. Nicolas, Forbes 3 & 21 (P, syn.) & St. Vincent, summit of Mt Verede, Vogel 5 (P, syn., FT, K!, isosyn.)
ADIANTUM caudatum [family ADIANTACEAE], [sensu Hook., Syn. Fil.: 115 (1867) pro parte; Hieron. in V.E. 2: 44 (1908); Sim, Ferns S. Afr., ed. 2: 241, t. 118/2 (1915); F.D.-O.A.: 43 (1929); Ogata, Ic. Fil. Jap. 2: t. 51 (1929); Alston in J.B. 72, Suppl. Pterid.: 7 (1934); Tardieu, in Mém. I.F.A.N. 28: 96, t. 15/4, 5 (1953) et auctt. mult., non L.]
ADIANTUM caudatum Kuhn var. hirsutum [family ADIANTACEAE], Fil. Afr.: 63 (1868) & in von der Decken, Reisen Ost Afr. 3, 3 Bot.: 12 (1879); Hieron. in P.O.A. C: 78 (1895). Type: numerous syntypes
ADIANTUM zollingeri [family ADIANTACEAE], [sensu Carruth., Cat. Afr. Pl. Welw. 2: 266 (1901), non Mett. ex Kuhn]
Information
Rhizome short, erect; basal scales linear, 4–5 mm long, 0.2 mm wide, blackish with a narrow pale margin. Fronds tufted, erect or decumbent, 10–40 cm long, simply pinnate, usually rooting at the apices; rhachis and stipe dark brown, densely hairy in lower half of the stipe, often with narrow pale brown scales; pinnae alternate, oblong to obliquely triangular, becoming successively smaller above, 0.7–2.3 cm. long, 4–11 mm wide, shortly to deeply incised or lobed on upper and outer margins, entire on lower margin, cuneate or rarely rounded at the base, densely to sparsely hairy with white or brown hairs or sometimes almost glabrous; venation usually prominent; pinna-stalklets 0.1–1 mm long, dark brown, hairy. Sori round or oblong, 1–3.5 mm wide. Fig. 13/2 (p. 51).
Range
DISTR. U 1–4; K 1, 2, 4, 6, 7; T 1–3, 5–8; Z widespread in tropical Africa, also in South Africa and Yemen; apparently not in India (see notes)
Altitude range
0–1650(–1800?) m
Distribution
KENYA Northern Frontier Province Mathews Range, Kichich, 23 Dec. 1958, Newbould 3562!;KENYA Machakos District Muka, 6 June 1902, Kassner 942!;KENYA Kwale District Waturuma, 27 Feb. 1902, Kassner 137!TANZANIA Mbulu District Manyara National Park, Endabash, 21 Nov. 1969, Richards 24725!;TANZANIA Lushoto District E Usambaras, Amani, near Kwamkuyu Bridge, 8 Jan. 1950, Verdcourt 17!TANZANIA Morogoro, near Agric. Dept. Nurseries, 23 Nov. 1955, Milne-Redhead & Taylor 7419!TANZANIA Zanzibar Marahubi, 21 Aug. 1963, Faulkner 3262!UGANDA West Nile District Metuli, Dec. 1932, Eggeling 878!;UGANDA Mbale District N Bugisu, 1–2 km E of Busano, 1 June 1969, Lye 3188!;UGANDA Mengo District Jumba, Apr. 1916, Dummer 2793!
Notes
The A. caudatum complex is a difficult one and will continue to cause problems. There is great variation in the degree of incision of the pinnae of A. incisum and a weak distinction can be made between plants with less incised ± glabrous pinnae at higher altitudes and those with deeply incised or lobed hairy pinnae from lower altitudes; but there are intermediates. At Wundanyi in the Taita Hills diploids with hairy, more incised pinnae occur together with tetraploids with glabrous, less incised pinnae. Ghatak (Bull. Bot. Surv. India 5: 71–77 (1963)) does not accept Pichi-Sermolli’s identification of some Indian material as A. incisum and describes it as A. indicum Ghatak.

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