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Synonyms: |
Acrostichum heudelotii (Bory ex Fée) Hook. Chrysodium heudelotii (Bory ex Fée) Kuhn Gymnopteris heudelotii Bory ex Fée Leptochilus heudelotii (Bory ex Fée) C.Chr. |
Common names: | |
Frequency: | |
Status: | |
Description: |
Aquatic species. Rhizome widely creeping, up to 10 mm in diameter; rhizome scales very dark brown, lanceolate, entire. Fronds spaced apart, arching, firmly membranous, transparent when submerged, trimorphic. Sterile submerged fronds: stipe 2.5-7 cm long, lamina ovate to elliptic, 7.5-17 × 3.5-7 cm, pinnate to deeply pinnatifid towards the apex, not gemmiferous; pinnae deeply pinnatifid towards the frond base, becoming subentire towards the apex, angled at ± 45° towards the apex. Sterile aerial fronds: stipe 11-16 cm long, lamina ovate to elliptic, 16-32 × 12-15 cm, pinnate, terminal portion pinnatifid, not gemmiferous; pinnae oblong-lanceolate, apex pointed, base unequally wedge-shaped, sessile to asymmetrically adnate, margins entire to widely and shallowly serrate. Fertile aerial fronds: similar to sterile aerial fronds but with the pinnae much narrower and thus more widely spaced. Sporangia either covering the whole undersurface of the pinna or in irregular patches. |
Notes: | Can be distinguished from other species by its trimorphic not gemmiferous fronds and its aquatic habit. |
Derivation of specific name: | heudelotii: named after J. Heudelot, a French explorer who collected plants in Guinea and Senegal from 1828 to 1837. |
Habitat: | Grows partly submerged in streambeds or along streambanks on deeply shaded rocks in forest, especially in waterfalls. |
Altitude range: | 300 - 2400 m |
Worldwide distribution: | An essentially tropical African species, widespread in West and East Africa and Zambia, rare in Mozambique and Zimbabwe and exceptional in Limpopo in South Africa. |
Mozambique distribution: | Z,MS |
Growth form(s): | |
Endemic status: | |
Red data list status: | |
Insects associated with this species: | |
Spot characters: | Display spot characters for this species |
Literature: |
Burrows, J.E. (1990). Southern African Ferns and Fern Allies. Frandsen, Sandton. Page 296. (Includes a picture). Burrows, J.E. & Burrows, S.M. (1993). An annotated check-list of the pteridophytes of Malawi Kirkia 14(1) Page 98. Chapano, C. & Mamuto, M. (2003). Plants of the Chimanimani District National Herbarium and Botanic Garden, Zimbabwe Page 9. Crouch, N.R., Klopper, R.R., Burrows, J.E. & Burrows, S.M. (2011). Ferns of Southern Africa, A comprehensive guide Struik Nature Pages 496 - 497. (Includes a picture). Da Silva, M.C., Izidine, S. & Amude, A.B. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30 Sabonet, Pretoria Page 11. Jacobsen, W.B.G. (1983). The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 428 - 429. (Includes a picture). Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 7. Roux, J.P. (2001). Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Page 147. Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Pages 115 - 116. Schelpe, E.A.C.L.E. (1970). Pteridophyta Flora Zambesiaca Pages 218 - 219. (Includes a picture). |
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