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This species is accepted, and its native range is E. Tropical Africa.

[FTEA]

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

Type
Kenya, Naivasha/ Kiambu District, Sasumua Dam, Faden, Evans & Cameron 71/68 (Herb. Pic.Serm., holo.; BOL!, K!, Herb. Reichstein, Basel, iso.)
Morphology General Habit
Terrestrial.
Vegetative Multiplication Rhizomes
Rhizome short-decumbent, up to 16 mm in diameter, with crowded stipe bases and brown to dull ferrugineous scales, larger scales up to 31 × 5 mm, smaller scales linear-acuminate to ovate, irregularly set with short bifid teeth, glands, and irregular outgrowths
Morphology Leaves
Fronds 5–7 per plant, tufted, erect to arching, up to 1.5 m long.
Morphology Leaves Stipes
Stipe proximally castaneous, stramineous higher up, up to 61 cm long and 10 mm in diameter, near base with dense scales up to 24 × 10 mm, those higher up fugaceous.
Morphology Leaves Leaf lamina
Lamina firmly herbaceous, ovate to broadly ovate, up to 92 × 62 cm, 2pinnate to 2-pinnate-pinnatifid.
Morphology Leaves Rachis
Rachis greenish to stramineous, narrowly winged towards apex, initially with sparse to moderate stramineous to ferrugineous, scales up to 6 × 1.5 mm.
Morphology Leaves Pinnae
Pinnae up to 8 stalked pairs, subsessile and adnate towards apex, basal pinnae triangular, lanceolate, or oblong-acuminate towards lamina apex, basal pair longest, basiscopically developed, up to 32 × 14 cm; pinna-rachis narrowly winged for most of its length, subglabrous adaxially, initially moderately set with scales up to 5 × 2.5 mm on abaxial surface; pinnules petiolate, narrowly lanceolate to oblongacuminate, often slightly basiscopically developed, acroscopic pinnule on basal pinnae up to 86 × 25 mm, basiscopic pinnule on basal pinnae up to 106 × 38 mm; segments sessile, lanceolate to oblong, basiscopically decurrent, up to 18 × 8 mm, shallowly lobed to shallowly dentate, adaxially glabrous or with a few scattered hairs along costule, abaxially sparsely to moderately set with moniliform or isocytic hairs and filiform to subulate scales
Morphology Reproductive morphology Sori
Sori medial to inframedial, discrete or touching at maturity, circular, up to 2 mm in diameter; sporangium stalk simple, glandular, or with a short, few-celled hair; indusium absent or present, brown, firmly herbaceous, cordate to reniform, repand to erose, margin glandular or eglandular, up to 1 mm in diameter
Morphology Reproductive morphology Spores
Spores variously set with prominent tubercles and/or ridges, ruminate, 30–78 × 20–50 mm
Figures
Fig 13: 1
Ecology
Wet montane forests, riverine forests, streambanks, Albizia-Podocarpus forests, bamboo Podocarpus forests, giant heath zone; 1700–2500(–3500) m
Conservation
Widespread; least concern (LC)
Note
Vida, in Helv. Chim. Acta 56: 2130 (1973) report the species under the name D. pentheri as diploid: 2n = 82 ±4.
Distribution
Flora districts: U2 U4 K3 K4 K5 T2 T3 T6 T7 Range: Confined to East Africa

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[FTEA]
Use
None recorded for our area

Native to:

Kenya, Tanzania, Uganda

Dryopteris fadenii Pic.Serm. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Faden, R.B. [s.n.], Kenya K000675771 isotype
Faden, R.B. [s.n.], Kenya K000675772 isotype
Faden, R.B. [s.n.], Kenya K000675773 isotype

First published in Webbia 37: 333 (1984)

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.

Literature

Flora of Tropical East Africa

  • U.K.W.F., ed. 2: 36, t. 175 (1994).
  • Webbia 37: 333, 336, fig. 3 & 4 (1984)

Flora of Tropical East Africa
Flora of Tropical East Africa
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Herbarium Catalogue Specimens
'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
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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