Skip to main content
This species is accepted, and its native range is Kenya to Tanzania.

[FTEA]

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

Type
Type: Tanzania, E Usambara Mts, Amani area, Marvera, Faden et al. 70/293 (EA, holo., one frond on 7 sheets*; K!, iso.)(Note: * Strictly speaking this should be one holotype and 6 isotypes but since it was a single frond deliberately collected as a single specimen I consider it absurd not to look on it as a single holotype. The sheets should be joined in some way to make one entity.)
Vegetative Multiplication Rhizomes
Rhizome shortly creeping or erect
Morphology Leaves
Fronds tufted, 1–2 m tall
Morphology Leaves Stipes
Stipe 30–45 cm long with small adpressed scales at base
Morphology Leaves Leaf lamina
Lamina oblong, 0.65–1.1m long, 26–52 cm wide, simply pinnate, the lower 3 pairs, 5–8 mm long and 4 preceding pairs reduced; longest pinnae linear-oblong, 11.5–30 cm long, 1.5–2.6 cm wide, long acuminate at apex, with few hairs above, glabrous beneath or rarely with few hairs, lobed 1/3–2/3 to costa; lobes semicircular to ovate-oblong, 2–7 mm long, 4–4.5 mm wide, subtruncate to round at apex, toothed or entire; veins 8–10 pairs, 2 basal pairs anastomosing
Morphology Reproductive morphology Sori Indusium
Indusia glabrous or slightly hairy, rarely conspicuously hairy.
Morphology Reproductive morphology Sporangia
Sporangia not setose.
Ecology
Evergreen forest; 300–1500 m
Distribution
Flora districts: K7 T3 T6 T7 Range: Not known elsewhere

Native to:

Kenya, Tanzania

Thelypteris usambarensis (Holttum) Christenh. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Aug 1, 1973 Faden, R.B. [70/293], Tanzania Pneumatopteris usambarensis K000435824 isotype
Faden, R.B. [70/293], Tanzania Pneumatopteris usambarensis K000435823 isotype

First published in Global Fl. 4: 39 (2018)

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

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.
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 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