1. Family: Aspleniaceae Newman
    1. Genus: Asplenium L.
      1. Asplenium protensum Schrad.

        This species is accepted, and its native range is Tropical & S. Africa, W. Indian Ocean, N. Yemen.

    [FWTA]

    Aspleniaceae, A. H. G. Alston. Flora of West Tropical Africa. Ferns and Fern-Allies Supplement. 1959

    Ecology
    Epiphytic or rarely terrestrial, in montane forest; 5, 600–8, 000 ft. alt.
    [FTEA]

    Aspleniaceae, Henk Beentje. Flora of Tropical East Africa. 2008

    Leaves
    Fronds tufted, arching, narrowly oblong-elliptic, herbaceous, proliferous near the apex of the frond (rarely not proliferous).
    Stipes
    Stipe shiny dark brown, 4–20 cm long, densely set with ovate to broadly ovate clathrate pale scales of various sizes up to 1.5 mm long (–2.5 mm on crozier stipes) together with multicellular hairs.
    Leaf lamina
    Lamina very narrowly elliptic in outline, 15–95 × 3–12 cm, 2-pinnatifid, lower pinnae (much) reduced, apical pinna linear and lobed.
    Pinnae
    Pinnae in 24–56 pairs, lanceolate, rhombic, deeply but narrowly lobed to 1/3 – 2/3 of the way, 2–7 × 0.8–1.7 cm, base unequally cuneate, acroscopic basal lobe the largest and often parallel to the rachis, pinnately divided into linear-oblong acute 2fid or 3-fid or broadly cuneate and deeply incised lobes, lobes oblique, truncate and bifid, thinly pubescent above and below especially near the base, densely so along the costa, dorsally with clathrate ovate brown scales up to 1 mm long.
    Leaf veins
    Veins flabellate, costa may be difficult to see or pronounced.
    Rachis
    Rachis green above, dark brown to black at sides and beneath, pubescent with whitish hairs and with occasional ovate scales.
    Sori
    Sori 10–22, in 2 rows close to costa and set at 15–25°, linear and very narrowly oblong, 2–6.5 mm long.
    Indusium
    Indusium linear, membranous, entire, 0.3–0.5 mm wide.
    Figures
    Fig. 7: 5–7, p. 42.
    Ecology
    Moist forest, usually near streams or on rocks in stream; 1250–2900(–3300) m
    Conservation
    Widespread; least concern (LC)
    Note
    This taxon resembles A. pellucidum closely but differs in being proliferous, as well as in having much smaller rhizome scales.
    Type
    Type: South Africa, Cape Province, Hesse s.n. (?LE, holo.) (not at B)
    Habit
    Low-level epiphyte, on wet rocks or terrestrial.
    Rhizomes
    Rhizome scales 1–1.5(–2) mm long, with pale lacerate margins. Rhizome erect or sometimes shortly creeping, smelling of wintergreen (methyl salicylate) when cut, up to 5 mm diameter, with dark brown ovate-triangular clathrate minutely pseudoserrate
    Distribution
    Range: Much of tropical Africa, south to Zambia, Malawi, Mozambique, Zimbabwe, South Africa, Mascarene Is. Flora districts: U2 U3 K2 K3 K4 K5 K6 T1 T2 T3 T7

    Images

    Distribution

    Native to:

    Angola, Burundi, Cameroon, Cape Provinces, Comoros, Eritrea, Ethiopia, Gulf of Guinea Is., Kenya, KwaZulu-Natal, Lesotho, Madagascar, Malawi, Mauritius, Mozambique, Nigeria, Northern Provinces, Rwanda, Réunion, Sudan, Tanzania, Uganda, Yemen, Zambia, Zaïre, Zimbabwe

    Asplenium protensum Schrad. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 2008 Luke, W.R.Q. [11561], Kenya K000438363
    Jan 1, 2008 Katende, T. [1073], Uganda K000438369
    Jul 1, 2001 Cable, S. [3440], Cameroon K000109116
    Jan 1, 1996 Upson, T. [98], Cameroon K000381427
    Jan 1, 1996 Upson, T. [72], Cameroon K000381437
    Jan 1, 1996 Sidwell, K. [94], Cameroon K000381458
    Jan 1, 1996 Watts, J. [459], Cameroon K000381436
    23640.000
    Telfair, C. [Cat. no. 224], Mauritius Asplenium polyodon K001109575

    First published in Gött. Gel. Anz. 1818. 916. Mett. n. 137. HB. (1818)

    Accepted by

    • Roskov Y. & al. (eds.) (2018). World Ferns: Checklist of Ferns and Lycophytes of the World Species 2000 & ITIS Catalogue of Life Naturalis, Leiden, the Netherlands.

    Literature

    Flora of West Tropical Africa
    • Tard. in Mém. I.F.A.N. 28 : 183, t. 38, fig. 5, 6 (1953).
    • Sim F.S.A. 149, t. 51 (1915)
    • Hook. Syn. Fil. 211 (1867)
    • in Gött. gel. Anz. 1818 : 916
    Flora of Tropical East Africa
    • U.K.W.F. ed. 2: 28, t. 172 (1994).
    • Johns, Pterid. trop. East Africa checklist: 66 (1991)
    • Burrows, S. Afr. Ferns: 232, map, figs. (1990)
    • Schelpe, F.Z. Pteridophyta: 179 (1970)
    • Tardieu, Fl. Camér. 3, Ptérid.: 194, t. 29/5–6 (1964)
    • Alston, Ferns W.T.A.: 57 (1959)
    • Mém. Inst. Fr. Afr. Noire, 28: 183, t. 37 fig. 5–6 (1953)
    • Sim, Ferns S. Afr. ed. 2: 149, t. 51 (1915)
    • Gött. Gel. Anz. 1818: 916 (1818)

    Sources

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of West Tropical Africa
    Flora of West Tropical Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0