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Christella chaseana
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Photo: Petra Ballings
Moribane
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| Synonyms: |
Lastrea chaseana (Schelpe) Pic.Serm. Thelypteris chaseana Schelpe |
| Common names: | |
| Frequency: | |
| Status: | Native |
| Description: |
Rhizome creeping, up to 20 mm in diameter; rhizome scales up to 11 mm long, brown, lanceolate, thinly pilose, entire. Fronds closely spaced, erect or slightly arching, not proliferous, herbaceous. Stipe up to 63 cm long, pale brown, hairless with dark brown scales near the base. Lamina up to 80 × 30 cm, narrowly elliptic to lanceolate in outline, deeply 2-pinnatifid, apex tapering to a point with a deeply pinnatifid terminal segment, basal 3-5 pairs of pinnae reduced and deflexed. Pinnae narrowly oblong, ultimate lobes narrowly oblong, slightly falcate, apex rounded, basal acroscopic lobe enlarged and sometimes overlapping the rhachis; both surfaces hairy, more so along the veins, costa and costules; veins 1 pair meeting at the sinus. Rhachis strawcoloured, pilose. Sori round, up to 16 per lobe; indusia small,subcircular to kidney-shaped with long white hairs. |
| Notes: | Christella guenziana closely resembles C. chaseana but has an erect rhizome. C. microbasis has glandular hairs on the lamina undersurface as well as yellow glands on the indusia.
C. chaseana look for: creeping rhizome, 3-5 pairs of gradually reducing and deflexed pinnae, 1 pair of veins meeting at the sinus. |
| Derivation of specific name: | chaseana: named for Norman C. Chase (1888 - 1970), one of our foremost collectors of Zimbabwean plants, particularly of ferns. |
| Habitat: | Stream and riverbanks in mixed deciduous woodland and riverine forest fringes, among rocks in grassland, near water allthough not always along perennial streams. |
| Altitude range: (metres) | 600 - 1800 m |
| Worldwide distribution: | Angola, Cameroon, Congo, Ethiopia, Kenya, Malawi, Mozambique, Namibia, South Africa, Tanzania, Uganda, Zambia, Zimbabwe. |
| Zimbabwe distribution: | N,C,E |
| Growth form(s): | Terrestrial. |
| 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. Pages 265 - 266. As Thelypteris chaseana (Includes a picture). Burrows, J.E. & Burrows, S.M. (1993). An annotated check-list of the pteridophytes of Malawi Kirkia 14(1) Page 95. Burrows, J.E. & Willis, C.K. (eds) (2005). Plants of the Nyika Plateau Southern African Botanical Diversity Network Report No. 31 SABONET, Pretoria Page 43. as Thelypteris chaseana Crouch, N.R., Klopper, R.R., Burrows, J.E. & Burrows, S.M. (2011). Ferns of Southern Africa, A comprehensive guide Struik Nature Pages 690 - 691. (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 15. Dowsett-Lemaire, F. (1989). The flora and phytogeography of the evergreen forests of Malawi. I: Afromontane and mid-altitude forests; Bull. Jard. Bot. Nat. Belg. 59(1/2) Page 25. As Thelypteris chaseana Jacobsen, W.B.G. (1983). The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 392 - 393. (Includes a picture). Kornas, J. (1979). Distribution and ecology of the Pteridophytes in Zambia Polska Akademia Nauk Wydzial II Nauk Biologicznych Pages 87 - 88. As Thelypteris chaseana 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 10. Roux, J.P. (2001). Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Page 121. Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Page 202. Schelpe, E.A.C.L.E. (1970). Pteridophyta Flora Zambesiaca Pages 194 - 195. As Thelypteris chaseana |
Other sources of information about Christella chaseana:
Our websites:
Flora of Malawi: Christella chaseanaFlora of Mozambique: Christella chaseana
Flora of Zambia: Christella chaseana
External websites:
African Plants: A Photo Guide (Senckenberg): Christella chaseanaBHL (Biodiversity Heritage Library): Christella chaseana
EOL (Encyclopedia of Life): Christella chaseana
GBIF (Global Biodiversity Information Facility): Christella chaseana
Google: Web - Images - Scholar
iNaturalist: Christella chaseana
IPNI (International Plant Names Index): Christella chaseana
JSTOR Plant Science: Christella chaseana
Mansfeld World Database of Agricultural and Horticultural Crops: Christella chaseana
Plants of the World Online: Christella chaseana
Tropicos: Christella chaseana
Wikipedia: Christella chaseana
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