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This species is accepted, and its native range is Tropical & S. Africa, W. Indian Ocean, India, Sri Lanka, Jawa, Lesser Sunda Islands (Timor), Samoa (Savai'i).
Asplenium erectum

[FTEA]

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

Type
Type: Réunion, Bory de St. Vincent s.n. (B-W 19906, lecto., chosen by ?)
Morphology General Habit
Terrestrial or low-level epiphyte, occasionally on rocks.
Vegetative Multiplication Rhizomes
Rhizome 3–4 mm diameter, erect, with subulate dark brown clathrate attenuate entire rhizome scales 1.5–3 mm long.
Morphology Leaves
Fronds tufted, 15–50 cm long.
Morphology Leaves Stipes
Stipe matt grey-brown to black, 2–12 cm long, with narrow green wings in the upper 1/2, with sparse scales similar to the rhizome scales when young, becoming glabrous with age.
Morphology Leaves Leaf lamina
Lamina light green or dark green, erect or arching, narrowly elliptic in outline, 12–34 × 1.8–4.5 cm, 1-pinnate (sometimes to 2-pinnatifid on some lower pinnae), decrescent towards apex, not proliferous, firmly membranous.
Morphology Leaves Pinnae
Pinnae up to 40 pairs, asymmetrically oblong (becoming flabellate towards the base of the frond), 0.8–2.5(–3.5) × 0.3–1 cm, shortly petiolate, ± auriculate acroscopically at the base with an acroscopic basal lobe separated to a greater or lesser degree, serrate except for the obtusely unequally cuneate base, rounded to acute, glabrous on both surfaces.
Morphology Leaves Rachis
Rachis dark matt-grey to black with 2 narrow green wings, glabrous.
Morphology Reproductive morphology Sori
Sori up to 15 per pinna, narrowly oblong, 1.5–5 mm long, mostly set at an acute angle on both sides of the costa.
Morphology Reproductive morphology Sori Indusium
Indusium membranous, narrowly oblong, entire.
Figures
Fig. 5: 1–2, p. 30.
Ecology
Shaded forest floors; (?400 m in Shimba Hills) 900–2750 m (?–3650 m on Ruwenzori)
Conservation
Widespread; least concern (LC)
Note
Several specimens have low numbers of sori per pinna and could key out to A. normale; however, the almost free acroscopic lobe of A. erectum is quite different from the pronounced but continuous acroscopic lobe of A. normale. These specimens are Zerny 175 and Allen 3734. Other, poor specimens may be difficult to key out. Much of the East African material has been named as A. lunulatum from the 1930s onwards; but that taxon is restricted to Southern Africa. H.D. van Someren 116 from Kenya, Shimba Hills is most likely this taxon, even though the rhizome is missing. Van Someren did not indicate an altitude, but it must be below 450 m. but the free basal auricles are rare (less than 10 of the material available) and specimens overlap geographically completely with the main taxon; moreover, a single population (e.g. fide Grimshaw 93/1153 but observed on several multi-specimen collections) and occasionally even a single plant may show both free and united auricles. For our region at least I don’t believe these varieties work – even though the type of usambarense comes from Uganda (!). I am completely unconvinced about the difference between the varieties erectum and usambarense. These were generally separated as follows: Lamina very narrowly oblong; basal auricle of lower pinnae not free; costa often whitish above; sori over 2 mm from the margin . . . . . . . . . var. erectum Lamina linear; basal auricle of the lower pinnae free; costa dark above . . . var. usambarense
Distribution
Range: Tropical Africa from Guinea to Cameroon, southern Africa, South Africa, Madagascar, Mascarene Is. Flora districts: U2 U4 K1 K3 K4 K5 K6 K7 T2 T3 T4 T6 T7 T8

[FWTA]

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

Ecology
Epiphyte or terrestrial; up to about 7, 000 ft. alt.

Native to:

Burundi, Cameroon, Cape Provinces, Comoros, Ethiopia, Ghana, Guinea, Gulf of Guinea Is., India, Jawa, Kenya, KwaZulu-Natal, Lesser Sunda Is., Madagascar, Mozambique, Nigeria, Northern Provinces, Rwanda, Réunion, Samoa, Seychelles, Sri Lanka, Sudan, Swaziland, Tanzania, Uganda, Zambia, Zaïre, Zimbabwe

Asplenium erectum Bory ex Willd. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 2005 Doubenberger [18], Tanzania K000423900
Jan 1, 1996 Upson, T. [59], Cameroon K000381464
Jan 1, 1996 Thomas, D.W. [9192b], Cameroon K000381428
Jan 1, 1996 Thomas, D.W. [9453], Cameroon K000381429
Jan 1, 1996 Tchouto (Mbatchou), P. [388], Cameroon K000381431
Doubenberger [18], Tanzania K000423898
Harris, T. [614], Mozambique K000614203
Doubenberger, I. [18], Tanzania K000423899
Norris, W. [s.n.], Malaysia K000429889
Winkler, J. [131], Indonesia K000429890
Kamau [587], Kenya K000696560
s.coll. [Cat. no. 2211] Asplenium pulchrum K001115418
Oct 1, 1996 Etuge, M. [1357], Cameroon Asplenium erectum var. usambarense K000109117

First published in Sp. Pl., ed. 4, 5: 328 (1810)

Accepted by

  • Fraser-Jenkins, C.R. & al. (2017). An Annotated Checklist of Indian Pteridophytes 1: 1-562. Dehra Dun : BSMPS.
  • 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.
  • Roux, J.P. (2016). The Lycopods and Ferns of Drakensberg and Lesotho: 1-384. Briza academic books, Pretoria, South Africa.
  • Viane, R.L.L. (2021). Aspleniaceae of Madagascar: A revision with annotations on species from the Mascarenes, the Comoros, TAAF, and continental Africa: 1-247. Published by the author.

Literature

Kew Backbone Distributions

  • Roux, J.P. (2016). The Lycopods and Ferns of Drakensberg and Lesotho: 1-384. Briza academic books, Pretoria, South Africa.

Flora of Tropical East Africa

  • Burrows, S. Afr. Ferns: 223, map, figs. (1990)
  • Johns, Pterid. trop. East Africa checklist: 63 (1991)
  • Schelpe, F.Z. Pteridophyta: 175 (1970)
  • Sp. Pl., ed. 4, 5: 328 (1810)
  • U.K.W.F. ed. 2: 28, t. 172 (1994).

Flora of Tropical East Africa
Flora of Tropical East Africa
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Flora of West Tropical Africa
Flora of West Tropical Africa
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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 Selected Plant Families 2021. 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 2021. 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

Kew Science Photographs
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