1. Family: Aspleniaceae Newman
    1. Genus: Thelypteris Schmidel
      1. Thelypteris microbasis (Baker) Tardieu

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

    [FWTA]

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

    Ecology
    Up to about 4, 000 ft. alt.
    [FTEA]

    Thelypteridaceae, Bernard Verdcourt. Flora of Tropical East Africa. 2006

    Type
    Type: Nigeria, Onitsha, Barter 571 (K!, holo.)
    Rhizomes
    Rhizome erect or short-creeping with brown lanceolate scales 2–6 mm long
    Leaves
    Fronds tufted, 0.3–1.5 m tall
    Stipes
    Stipe straw-coloured, 15–60 cm long
    Leaf lamina
    Lamina ellipticlanceolate, 23–70 cm long, 10–25 cm wide, with 2–3(–11) pairs of lower pinnae reduced with lowest 2.5 cm long, but sometimes little reduced; largest pinnae narrowly oblong, 5–16 cm long, 1–1.8 cm wide, acuminate, pinnatifid into oblong lobes, 5–10 mm long, 2–4 mm wide, falcate, with hairs and short capitate hairs on both surfaces; veins 8–10 pairs, typically free but in E Africa often with many anastomosing basal veins
    Indusium
    Indusia with numerous glandular hairs and sometimes a few acicular hairs but glands usually outnumbering the hairs, or if not, then indusium much rounder and larger than in next species.
    Ecology
    By streams in evergreen forest and rocky ground in gorge near waterfall, Brachstegia–Uapaca woodland; 1000–2100 m
    Note
    The Balbo specimen was annotated by Faden as Cyclosorus dentatus in 1970 but Holttum in 1973 determined it as probably Christella microbasis. Faden (U.K.W.F. ed. 2: 31 (1994)) said the record of C. microbasis in Kenya by Holttum 1974 is apparently erroneous but the record is clearly based on the Balbo specimen. Bigger 2138 (Kilimanjaro, Lemosho R., 18 Aug. 1968) & 2327 (Kilimanjaro, Himo R., 17 Nov. 1968) have equal numbers of hairs and glands on the indusia which are larger and more regularly round than in C. friesii and the rhizome appears erect but there are up to 11 pairs of reduced pinnae. The relationships of these two taxa need investigation.
    Distribution
    Flora districts: K4 T2 T8 Range: Sierra Leone, Mali, Guinea, Liberia, Ivory Coast, Ghana, Benin, Nigeria, Cameroon, Sudan, Angola, South Africa (Transvaal)

    Images

    Distribution

    Native to:

    Angola, Benin, Cameroon, Ghana, Guinea, Ivory Coast, Kenya, Liberia, Nigeria, Senegal, Sierra Leone, Sudan, Tanzania

    Thelypteris microbasis (Baker) Tardieu appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Mar 1, 1955 Barter [571], Nigeria K000435804 Unknown type material

    First published in Notul. Syst. (Paris) 14: 344 (1953)

    Not 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. [Cited as Christella microbasis.]

    Literature

    Flora of West Tropical Africa
    • in Mém. I.F.A.N. 28 : 117, t. 20, fig. 1 (1953).

    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