Compilation
Adiantum rhizophorum

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Name

Identification
Adiantum caudatum L. [family ADIANTACEAE ] Verified by Not on sheet, Adiantum rhizophorum Sw. [family ADIANTACEAE ] (stored under name); Verified by Not on sheet,
Related name
  • Adiantum confine
  • Adiantum incisum
  • Adiantum madagascariense
  • Adiantum comorense
  • Adiantum caudatum
  • Adiantum rhizophorum

Flora

Entry for ADIANTUM comorense (Tardieu) Verdc. [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 comorense (Tardieu) Verdc. [family ADIANTACEAE], in K.B. 46: 272 (1991) (as ‘comoroense’). Type: Comoro Is., Mwali Is. [Anjouan], Hildebrandt 1752 (P, lecto.; K!, isolecto.)
ADIANTUM rhizophorum [family ADIANTACEAE], sensu Hieron. in V.E. 2: 44 (1908), non Sw.
ADIANTUM confine [family ADIANTACEAE], [sensu Peter, F.D-O.A: 43 (1929); C. Chr. in Dansk Bot. Arkiv 7: 124 (1932) pro parte; Tardieu in Mém. I.F.A.N. 28: 94, t. 15/3 (1953); Alston, Ferns W.T.A.: 39 (1959); Verdc. in J.E.A. Nat. Hist. Soc. 24: 38, fig. 3/a (1962); Tardieu, Fl. Cameroun, 3: 144, t. 19/2 (1964); Schelpe in Contr. Bolus Herb. 1: 52 (1969); Lye in Uganda Journ. 34: 66, fig. 2/a–c (1970); Schippers in Fern Gaz. 14: 182 (1993) pro parte, non Fée]
ADIANTUM rhizophorum Tardieu var. comorense [family ADIANTACEAE], Fl. Mad. 5 (1): 129, fig. 18/9–14 (1958)
Information
Rhizome short; scales pale brown, narrowly lanceolate, very shiny, the margin with short emergences. Fronds tufted, erect or decumbent, 20–60 cm long, simply pinnate, often rooting at the tips; stipe 8–10 cm long, glabrescent to covered with very narrow scales; rhachis dark brown to blackish, glabrescent to densely hairy; pinna-stalklets blackish, (1–)2–4 mm long, densely hairy; pinnae oblong, more rectangular in lower part of frond and more obliquely triangular in upper part, sometimes lower pinnae obliquely produced and lanceolate at tips, becoming successively smaller above, 0.8–2.5(–4) cm long, 0.4–1.2 cm wide, upper and outer margins incised but not deeply denticulate, lower margins entire, glabrous or with scattered hairs; sterile pinnules acutely toothed; venation almost plicate. Sori narrowly curved-oblong or straight, 1 mm long, 3 mm wide. Fig. 13/1 (p. 51)
Range
DISTR. U 2; K 7; T 3, 6, 7 (fide de Boer)
Altitude range
100–700 m
Distribution
KENYA Kwale District Mt Jombo [Dzombo], 7 Jan.1978, Gilbert et al. 4964! & same locality, 8 Apr. 1968, Magogo & Glover 726! & Shimba Hills, Mwauhemwana R., 25 July 1993, Luke 3600!TANZANIA Tanga District East Usambara Mts, Sigi–Segoma, 1 Mar. 1955, Faulkner 1587! & Magunga Forest, 9 Dec. 1953, Faulkner 1288!;TANZANIA Uzaramo District Pugu Hills, Kiserawe, 25 Aug. 1940, Vaughan 3133!UGANDA Toro District Bwamba, Semliki Forest, W of Ntandi, near Kirmia, 23 Sept. 1969, Lye 4276! & same, Faden & Evans 69/1279A! & Buyayu-Sempayo road, Oct. 1929, Liebenberg 925!
Distribution (external)
; Ivory Coast
Ghana
Togo
Cameroon
Malawi
Comoro Is. (see note)
Notes
M.F. Badré, who kindly sent me a xerox copy of Fée’s type of A. confine (Réunion, de Montbrison; P, holo., K, xerox!), has synonymised it with A. rhizophorum. Curiously Cordemoy, Fl. I’Ile Réunion 1 (Crypt. vasc.) (1891) does not mention A. confine. Tardieu-Blot (1953) (see above) records it from the Seychelles and Madagascar but in her treatment for Fl. Madag. 5 (1) (1958) she does not mention it, but does describe A. rhizophorum var. comorense in Fl. Madag. 5 (1): 129 (1958). In 1964 she recorded A. confine from mainland Africa and the Comoro Is. Hooker describes A. rhizophorum as everywhere glabrous but t. 80/a shows distinct hairs. I have examined the syntypes of A. rhizophorum Sw. (S) and am convinced that it is different from mainland African material long placed under A. confine .

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