1. Family: Aspleniaceae Newman
    1. Genus: Asplenium L.
      1. Asplenium preussii Hieron.

        This species is accepted, and its native range is Tropical & S. Africa.

    [FTEA]

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

    Type
    Type: Cameroon, Mt Cameroon, Buea, Preuss 584 (B!, lecto.; B!, iso.), chosen by Tardieu (1964)
    Habit
    Terrestrial, epiphyte or lithophyte.
    Rhizomes
    Rhizome scales 3–7 × 2 mm, hair-tipped. Rhizome erect, 5–10 mm diameter, with dark brown subulate subentire concolorous
    Leaves
    Frond tufted, arching, thinly coriaceous, to 60 cm long, proliferous at the base of the deeply pinnatifid lanceolate apical segment.
    Stipes
    Stipe green when fresh, greyish-green when dried, 8–20 cm long, with sparse dark brown lanceolate clathrate scales up to 2 mm long.
    Leaf lamina
    Lamina 22–43 × 4.5–13 cm, 2-pinnatisect, oblong lanceolate in outline, acuminate, basal pinnae hardly reduced.
    Pinnae
    Pinnae variable, from shallowly incised to pinnatifid almost to costa, up to 8.5 × 2 cm, petiolate, lanceolate-attenuate, unequally cuneate at the base, deeply pinnatifid into linear or very narrowly oblong-acute or oblanceolate 2-fid lobes up to 8 mm long, basal acroscopic lobe broadly cuneate, shallowly incised in the upper 1/2 into 4–7 acute short lobes, glabrous except for a few substellate dark brown minute scales on the lower surface.
    Rachis
    Rachis matt-greyish-green with minute substellate to very narrowly lanceolate dark brown scales.
    Sori
    Sori set along the veins, one per lobe, linear, 2–7 mm long, slightly curved.
    Indusium
    Indusium very narrowly oblong, membranous, entire.
    Ecology
    Moist forest; 1400–2350 m
    Conservation
    Widespread; least concern (LC)
    Note
    A variable species. I agree with Burrows that the finely divided extreme form resembles A. dregeanum. A. bugoiense is also close, differing mainly in the dissection details; there are intermediates such as Faden 69/2117. When specimens lack gemmae, they will key to the A. rutifolium/loxoscaphoides group.
    Distribution
    Range: Sporadic throughout tropical Africa, to South Africa Flora districts: U2 K5 T6
    [FWTA]

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

    Ecology
    Terrestrial, especially on rocks, 3, 500 to 6, 000 ft. alt.

    Images

    Distribution

    Native to:

    Cameroon, Ethiopia, Guinea, Gulf of Guinea Is., KwaZulu-Natal, Liberia, Mozambique, Nigeria, Northern Provinces, Sierra Leone, Sudan, Zaïre, Zimbabwe

    Asplenium preussii Hieron. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Nov 1, 2008 Cheek, M. [13448], Cameroon K000580228
    Nov 1, 2003 Ghogue, J.-P. [1022 b], Cameroon K000746305
    Nov 1, 2003 Ghogue, J.-P. [1022 a], Cameroon K000746285
    Jul 1, 2001 Cable, S. [2769], Cameroon K000109005
    Jul 1, 2001 Cable, S. [3767], Cameroon K000109006
    Jul 1, 2001 Cable, S. [3382], Cameroon K000109007
    Jul 1, 2001 Etuge, M. [1745], Cameroon K000109011
    Jan 1, 2001 Groves, M. [176], Cameroon K000109010
    Oct 1, 1996 Lane, P. [59], Cameroon K000109009
    Sep 1, 1996 Etuge, M. [1323], Cameroon K000109008
    Jan 1, 1996 Thomas, D.W. [9476], Cameroon K000381433
    Jan 1, 1996 Thomas, D.W. [9256], Cameroon K000381435
    Jan 1, 1996 Cable, S. [419], Cameroon K000381434
    Mann, G. [665], Bioko K000423924

    First published in 2. 9 t. 1 f. D. 1910 (1910)

    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: 199, t. 39, fig. 3, 4 (1953).
    • in Deutsch.Zentr.–Afr. Exp. 1907–8, 2 : 9, t. 1, fig. D (1910)
    Flora of Tropical East Africa
    • Johns, Pterid. trop. East Africa checklist: 66 (1991).
    • Burrows, S. Afr. Ferns: 234, map, figs. (1990)
    • Alston, Ferns W.T.A.: 59 (1959)
    • Z.A.E. 2: 9 (1910)

    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