Aspleniaceae
Asplenium

Asplenium hemitomum Hieron.

First published in Bot. Jahrb. Syst. 46: 365 (1911)
This species is accepted
The native range of this species is Tropical Africa. It is an epiphyte.

Descriptions

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

Ecology
On trees and rocks usually by streams in forest; up to 2, 500 ft. alt.
[FWTA]

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

Type
Type: Bioko [Fernando Po], Barter s.n. (B!, lecto., K!, iso.), chosen by Tardieu?
Vegetative Multiplication Rhizomes
Rhizome erect, short, with dark brown narrowly ovate attenuate rhizome scales.
Morphology Leaves
Fronds tufted, 20–50 cm long.
Morphology Leaves Stipes
Stipe dark grey, 10–23 cm long, canaliculate in upper part, bearing scales similar to those of rhizome.
Morphology Leaves Leaf lamina
Lamina oblong, 1-pinnate, 10–35 × 7–14 cm.
Morphology Leaves Pinnae
Terminal pinna often 3-lobed with acute lobes. Pinnae in 5–12 pairs, at an angle of 85° with the rachis, (sub)opposite, sub-coriaceous, petiolate, spaced, rhomboid and asymmetrical, 5–8 × 2–3 cm, base unequal, the acroscopic base cuneate, subtruncate and ± auriculate, the basiscopic base oblong and rounded, sometimes also auriculate, margin crenate-dentate, median lobe elongate [?], deltoid and serrate. Pinnae with small narrow scales on lower surface.
Morphology Leaves Rachis
Rachis compressed, green, sparsely scaly.
Morphology Reproductive morphology Sori
Sori many, along the veins forming an angle of ± 30° with the costa, linear, 10–23 mm long, not reaching the margin or the costa, some opening towards the costa, some towards the margin.
Morphology Reproductive morphology Sori Indusium
Indusium membranous, entire, 0.5–0.7 mm wide.
Distribution
Range: Guinea to Congo-Kinshasha. Some specimens had been named as this taxon, but turned out to be {i}A. warneckei{/i}.
[FTEA]

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

    • 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 Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0