Polystichum magnificum F.Ballard

First published in Kew Bull. 12: 48 (1957)
This species is accepted
The native range of this species is S. Ethiopia to Tanzania.

Descriptions

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

Type
Uganda, Mount Elgon, in the crater north of Maji ya moto, Hedberg 965 (K!, holo.; K!, iso.)
Morphology General Habit
Terrestrial.
Vegetative Multiplication Rhizomes
Rhizome short-creeping, branched, up to 12 mm in diameter, with dense papery reddish narrowly linear scales up to 30 × 2 mm
Morphology Leaves
Fronds 6–7 per plant, erect to suberect, up to 113 cm long.
Morphology Leaves Stipes
Stipe reddish-brown at base, straw-coloured above, up to 47 cm long, 0.9 cm in diameter, with adaxial groove, with dense reddish narrowly ovate scales up to 40 × 2 mm, margin with widely spaced projections, apex acicular, scales towards top of Stipe more variable in size, larger scales narrowly ovate, up to 28 × 8 mm, smaller scales narrowly triangular and shortly stalked.
Morphology Leaves Leaf lamina
Lamina leathery, dark green above, slightly paler below, narrowly ovate to oblong, up to 66 cm long, 2-pinnate to 3-pinnatifid.
Morphology Leaves Rachis
Rachis straw-coloured, up to 40 cm long, with adaxial groove, with dense reddish ovate acuminate scales and often with a single gemmiferous bud near apex, densely enclosed by reddish bud scales.
Morphology Leaves Pinnae
Pinnae oblong ovate, up to 13 cm long; costa straw-coloured with adaxial groove with dense scales, similar to but smaller than those on the rachis; pinnules inaequilaterally ovate, lobate, crenate, lowest pinnules acroscopically incised to or near to adaxial groove, adaxially and abaxially with dense reddish papery scales 4–5 mm long, simple or with short marginal outgrowths at base, often twisted; venation evident
Morphology Reproductive morphology Sori
Sori medial to inframedial, uniseriate, discrete at maturity, circular, up to 2.2 mm in diameter; sporangium with annulus of 11–17 cells; indusium persistent, peltate, incomplete to circular, erose, maximum radial length 1.14 mm, brown
Morphology Reproductive morphology Spores
Spores relatively smooth, echinulate
Figures
Figure 10: 3-4, figure 11:6
Ecology
Bamboo zone or moorland, in sheltered sites; 3300–3800 m
Conservation
Although restricted in distribution the species is not considered to be threatened.
Distribution
Flora districts: U3 K3, K5 Range: Endemic to Elgon and the Bale, Arussi, and Gamu Gofa regions in southern Ethiopia
[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
  • 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