Polystichum sinense (Christ) Christ

First published in Mém. Soc. Bot. France 1: 30 (1905)
This species is accepted
The native range of this species is S. Africa, Pakistan to China, Taiwan. It is a perennial or lithophyte and grows primarily in the subtropical biome.

Descriptions

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

Type
China, Szechuan, Mupin, Wilson 2614 (BM!, holo.)
Morphology General Habit
Terrestrial or lithophytic.
Vegetative Multiplication Rhizomes
Rhizome suberect, to 13 cm long and 1 cm in diameter, rarely branched, with dense roots and brown linear paleae to 12 × 1 mm, ending in acicular cell
Morphology Leaves
Fronds tufted, 8–12 in number, to 1 m long.
Morphology Leaves Stipes
Stipe brown near base, straw-coloured higher up, 35–45 cm long, 5 mm in diameter, with adaxial groove, sparsely to densely paleate, paleae ovate, 13–23 × 7–9 mm with fimbriate margin and darker central part.
Morphology Leaves Leaf lamina
Lamina herbaceous, pale to dark green, narrowly elliptic in outline, (33–)47–63 × 8–16 cm, 2-pinnate.
Morphology Leaves Rachis
Rachis straw-coloured, densely paleate with paleae similar to but smaller than those on stipe, to 9 × 3 mm; pinnae up to 29 on each side of the rachis, the lowermost reduced and deflexed, the largest to 9 × 2 cm; pinnules up to 12 free pairs per pinna, to 12 mm long, long-aristate; venation clear, costa with dense narrowly ovate to triangular scales with long outgrowths on lower margins
Morphology Reproductive morphology Sori
Sori (sub-)terminal on abbreviated vein branches, circular, ± 1 mm in diameter; sporangium with 11–24 indurated annulus cells; indusium persistent, straw-coloured, peltate, circular, repand to erose with small, central processes, maximum radial length 1.1 mm
Morphology Reproductive morphology Spores
Spores brown, smooth or tuberculate, spiculate
Figures
Figure 10: 9-10, figure 11: 1-3
Ecology
Bamboo zone, Hagenia zone, heath zone and moorland, occasionally in moist forest, often near streams, at higher altitudes in sheltered sites; 2350–3650(?–4100) m
Conservation
Widespread; least concern (LC)
Note
P. transvaalense and P. wilsonii occur sympatrically and often grow side by side. P. wilsonii has slightly shorter and narrower fronds, more pronounced reduced and deflexed of the basal pinnae, and an indusium margin that generally is less clearly sculptured; also, the paleae occur on the rachis, while in P. transvaalensis they are restricted to the stipe and the lower rachis. P. wilsonii is prdominantly a high altitude species – although it does occur at lower altitudes as well, where it overlaps with P. transvaalensis. A number of intermediates occur, and a putative hybrid has been described ( P. × saltum, Roux 1997).
Distribution
Flora districts: U2 U3 K3 K4 K5 K6 T2 T3 T7 Range: High mountains of Bioko, Cameroon, eastern Congo-Kinshasa, Ethiopia, Zimbabwe and South Africa Range: Temperate and tropical Asia
[FTEA]

Uses

Use
None recorded from 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
  • Kew Science Photographs

    • Copyright applied to individual images