Polystichum zambesiacum Schelpe

First published in Bol. Soc. Brot., sér. 2, 41: 215 (1967)
This species is accepted
The native range of this species is Tanzania to S. Tropical Africa.

Descriptions

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/120183759/120183766

Conservation
LC - least concern
[IUCN]

Dryopteridaceae, JP Roux, M Shaffer-Fehre, B Verdcourt. Flora of Tropical East Africa. 2007

Type
Zimbabwe, Henkels Nek, Stapleford, Schelpe 5751 (BOL, holo.; BOL!, iso.)
Morphology General Habit
Terrestrial or lithophyte.
Vegetative Multiplication Rhizomes
Rhizome short creeping to suberect, often branched, up to 25 mm in diameter, with linear scales up to 30 × 2 mm long, margins fringed
Morphology Leaves
Fronds tufted, 5–8 per plant, arching, 100–180 cm long.
Morphology Leaves Stipes
Stipe reddish-brown at base, paler above, up to 84 cm long, to 9 mm in diameter with adaxial groove, scales reddish-brown, large and small scales mixed, up to 16 × 10 mm.
Morphology Leaves Leaf lamina
Lamina firmly herbaceous to coriaceous, ± narrowly ovate, up to 89 cm long, 2-pinnate to 3pinnatifid.
Morphology Leaves Rachis
Rachis straw-coloured, with adaxial groove, with sparse papery pale to reddish-brown scales up to 1.8 mm long.
Morphology Leaves Pinnae
Pinnae in up to 30 free pairs, lowest pair often slightly reduced, frequently somewhat deflexed; pinnae to 27 cm long with up to 27 free pinnule pairs; basal pinnules closest to rachis simple or incised to or near to costa, acroscopic pinnules of basal pair reduced on lowest pinna, but increasing in size towards middle of lamina, pinnules in general asymmetric, narrowly ovate to narrowly triangular, up to 45 mm long, acroscopically auricled with lobate-serrate margin, obtuse; costa pale with adaxial groove at base, with few pale twisted scales up to 1.2 mm long, abaxially sparsely scaly.
Morphology Leaves Leaf veins
Veins evident or obscure
Morphology Reproductive morphology Sori
Sori terminal or near terminal on abbreviated or unabbreviated vein branches, discrete at maturity, round, ± 1 mm in diameter; sporangium with 9–20 indurated annulus cells; indusium persistent, peltate circular to reniform, margin shallowly lobed to irregularly dentate, maximum radial length 0.5 mm, brown
Morphology Reproductive morphology Spores
Spores with tubercles and a reticulate pattern of ridges
Figures
Figure 10: 11-12, figure 11:4
Ecology
Moist forest; 1800–2500 m
Conservation
May be vulnerable where it occurs in middle altitude forests which are heavily exploited by the local population.
Distribution
Flora districts: T3 T6 Range: Malawi, Mozambique, Zimbabwe, restricted to high mountains
[FTEA]

Uses

Use
None recorded for our area
[FTEA]

Sources

  • Flora of Tropical East Africa

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

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/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