Triplophyllum protensum
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Photo: Bart Wursten
Bomane, Aruwimi River
Photo: Bart Wursten
Bomane, Aruwimi River
Photo: Bart Wursten
Bomane, Aruwimi River
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| Synonyms: |
Aspidium cicutarium Willd. Aspidium protensum Afz. Ctenitis protensa (Afzel. ex Sw.) Ching Ctenitis protensa (Kunze) Proctor Dryopteris protensa C.Chr. Lastrea protensa T.Moore Nephrodium protensum Baker Polypodium protensum Poir. |
| Common names: | |
| Frequency: | |
| Status: | Native |
| Description: |
Rhizome long-creeping, 3–5 mm in diameter; rhizome scales broadly triangular in outline, gland-tipped, overlapping, 1–2 x 1 mm. Fronds monomorphic, spaced 0.5–3.5 cm apart, erect, thin to sub-coriaceous. Stipe 18–55 cm long, brown, base with lanceolate scales 4–5 x 0.4–1 mm, upper part with dense fine hairs 1–2 mm long, becoming hairless with age. Lamina 3–4-pinnatifid, deltoid-pentagonal in outline, with wide basal pinna pair strongly curving upwards, 18–36 x 15–32 cm, dark green above, yellowish green below; pinnae up to ± 12 on each side of the rhachis, apex gradually decrescent, pinnae closely aligned, not overlapping; basal pinna to 26 x 13 cm, with well-developed basiscopic pinnule; second pair shorter and less pinnatifid, central pinnae to 12 x 4 cm, 1-pinnate except for the basal pinnules which are 2-pinnatifid; ultimate segments of central pinnae slightly falcate, 7 mm wide, crenate to entire, apex rounded; rhachis not winged, grooved almost to apex; veins and veinlets forked, not reaching margin; indument on abaxial surface sparse, denser on venation, of ctenitoid hairs 0.4–1.3 mm long, on adaxial surface with only a few trichomes 1–2 mm long near forks of veins. Sori sub-median, near tip of acroscopic lateral veinlet, 1–1.5 mm in diameter; indusium kidney-shaped with lateral notch, 0.8 mm in diameter, from notch lines of square cells fan out, almost every second cell tipped by glandular hair ± 4 cells long. |
| Type location: |
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| Notes: | |
| Derivation of specific name: | protensum: extended. |
| Habitat: | Damp shady places on ground and rocks, in forest and plantations. |
| Altitude range: (metres) | |
| Worldwide distribution: | Sierra Leone, Liberia, Benin, Ghana, Cameroon, Equatorial Guinea, Gabon, DR Congo and Uganda. |
| Botanical divisions: | |
| Growth form(s): | Terrestrial. |
| Endemic status: | |
| Red data list status: | |
| Insects associated with this species: | |
| Spot characters: | Display spot characters for this species |
| Images last updated: | Monday 19 May 2025 |
| Literature: |
Other sources of information about Triplophyllum protensum:
External websites:
African Plants: A Photo Guide (Senckenberg): Triplophyllum protensumAfrican Plant Database: Triplophyllum protensum
BHL (Biodiversity Heritage Library): Triplophyllum protensum
EOL (Encyclopedia of Life): Triplophyllum protensum
GBIF (Global Biodiversity Information Facility): Triplophyllum protensum
Google: Web - Images - Scholar
iNaturalist: Triplophyllum protensum
IPNI (International Plant Names Index): Triplophyllum protensum
JSTOR Plant Science: Triplophyllum protensum
Mansfeld World Database of Agricultural and Horticultural Crops: Triplophyllum protensum
Plants of the World Online: Triplophyllum protensum
Tropicos: Triplophyllum protensum
Wikipedia: Triplophyllum protensum