Compilation
Nephrolepis tuberosa

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Name

Identification
Aspidium imbricatum Kaulf. [family DRYOPTERIDACEAE ] Nephrolepis auriculata (L.) Trimen [family LOMARIOPSIDACEAE ] Verified by Futoshi Miyamoto, Nephrolepis tuberosa (Bory ex Willd.) C.Presl [family LOMARIOPSIDACEAE ] (stored under name);
Related name
  • Nephrolepis tuberosa
  • `
  • Aspidium tuberosum
  • Aspidium imbricatum
  • Nephrolepis cordifolia
  • Nephrolepis auriculata

Flora

Entry for NEPHROLEPIS undulata var. undulata [family OLEANDRACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, page 1, (2001) Author: B Verdcourt, B.Sc., Ph.D.
Names
NEPHROLEPIS undulata var. undulata [family OLEANDRACEAE]
Aspidium undulatum Sw. [family DRYOPTERIDACEAE], in J. Bot. (Schrad.) 1800 (2): 32 (1801)
Nephrolepis cordifolia [family OLEANDRACEAE], [sensu Hook. & Baker, Syn. Fil.: 300 (1867); Sim, Ferns S. Afr. ed. 2: 126, t. 36 (1915) et auctt. pro parte, non (L.) C. Presl]
Nephrolepis tuberosa (Sw.) Kuhn var. undulata [family OLEANDRACEAE], Fil. Afr.: 156 (1868)
Nephrolepis cordifolia (Sw.) C. Chr. var. undulata [family OLEANDRACEAE], Ind. Fil.: 453, 455 (1906)
Nephrolepis cordifolia Bonap. var. compacta [family OLEANDRACEAE], Not. Pterid. 14: 265 (1923). Type: Congo (Kinshasa), Mboga to Lesse, Bequaert 3018 (BR, holo., P, iso.)
Nephrolepis biserrata [family OLEANDRACEAE], [sensu Peter in F.D.-O.A.: 65 (1929), quoad Busse 960, non (Sw.) Schott]
Information
Fronds narrowly oblong-elliptic, (15–)35–100(–150) cm long, 4–8 cm wide; stipe 5–25 cm long; fertile pinnae approximate to imbricate, narrowly elongate-triangular to oblong, 1–6 cm long, 0.5–1.5 cm wide, somewhat asymmetric with a very wide rounded auricle on the acroscopic side, much overlapping the rhachis and concealing it beneath, with a smaller rounded auricle on the basiscopic side.
Range
DISTR. U 1–3; K 3, 5; T 1, 3, 4, 6–8 widespread in tropical and southern Africa, Comoro Is., Madagascar, Mascarene Is. and recorded from India and Thailand by Pichi Sermolli
Altitude range
750–2450 m
Distribution
UGANDA W Nile District below Paida Rest Camp, 19 Aug. 1953, Chancellor 176!KENYA Trans-Nzoia District Elgon, Dec. 1930, Lugard 285!TANZANIA Mpanda District Mahali Mts, tributary of R. Katimba, about 6.5 km SW of Musuma Village, 13 July 1958, Juniper & Jefford 122!UGANDA Kigezi District Kisoro, 19 Apr. 1941, A.S. Thomas 3792!UGANDA Mbale District Bugishu, Bulago, 28 Aug. 1932, A.S. Thomas 329!KENYA Nandi District Kaimosi Farm, 15 June 1953, Williams Sangai 572!KENYA N Kavirondo District N Kavirondo, Gardner in F.D. 1037!TANZANIA Ulanga District near Kiberege, Itundufula, Apr. 1960, Haerdi 495/0!TANZANIA Mbeya District Igali, 24 Mar. 1932, St. Clair-Thompson 996!TANZANIA Songea District about 8 km W of Songea, 1 Apr. 1956, Milne-Redhead & Taylor 9433!
Notes
The rhizomes and tubers are edible.I have not altered the status of N. undulata which has been accepted by all writers on African ferns for the last 50 years. It would not be wise to do so until the complex has been studied throughout the world. It appears from determination labels that Miyamoto, after a detailed study, had decided to make it a variety of “ N. auriculata ” but the work has not been published. In the past it was not usually separated from N. cordifolia but varietal rank was given to it by Kuhn and Christensen. The majority of specimens is easily separable.

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