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This species is accepted, and its native range is Cameroon to Kenya and S. Tropical Africa.

[FTEA]

Thelypteridaceae, Bernard Verdcourt. Flora of Tropical East Africa. 2006

Morphology Leaves Leaf lamina
Lamina deeply bipinnatifid, narrowly oblong-lanceolate in outline, 0.5–1.2 m long, 12–26 cm wide, acute with up to 6 pairs of basal pinnae suddenly decrescent, widely spaced and reduced to less than 2 cm long.
Morphology Leaves
Pinnae often folded longitudinally when dry, middle narrowly oblong, 6.5–13 cm long, 1.2–3 cm wide, deeply pinnatifid; lobes narrowly oblong, 0.6–1.5 cm long, 2.5–3 mm wide, falcate, acute, costa with dense white hairs above, lower surface pilose with soft white hairs; veins up to 13 pairs, not anastomosing Fronds spaced 1–4 cm apart, 1–1.8 m tall
Morphology Reproductive morphology Sori Indusium
Indusium often small and ± irregular, glandular and with few to many long white hairs or entirely lacking
Figures
Fig 4, p.16.
Ecology
Swamps with sedges, Eulophia, Lobelia etc., often along forest streams; 1400–1800 m
Note
It is possible to confuse this with Amauropelta oppositiformis which sometimes lacks the characteristic glands. Schelpe gives the lamina length up to 1.7–0.48 m (error for 1.7 × 0.48 m) but although the species appears to be larger in the F.Z. area, I have seen nothing of this size.
Morphology Leaves Stipes
Stipe 24–38 cm long, greyish brown, thinly pubescent with short white hairs
Type
Type: Zambia, Luvingo, R.E. Fries 1104 (UPS, holo.; BM!, photo.)
Vegetative Multiplication Rhizomes
Rhizome creeping with dark brown lanceolate acute entire scales up to 4.5 mm long
Distribution
Flora districts: K3 T4 T7 Range: Cameroon, Congo (Kinshasa), Zambia, Malawi, Zimbabwe

Native to:

Cameroon, Kenya, Malawi, Tanzania, Zambia, Zaïre, Zimbabwe

Thelypteris friesii (Brause) Schelpe appears in other Kew resources:

First published in Bol. Soc. Brot., sér. 2, 41: 216 (1967)

Not accepted by

  • 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. [Cited as Christella friesii.]

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