Compilation
Oryza silvestris

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Name

Identification
Oryza silvestris Stapf [family POACEAE ] Oryza barthii A.Chev. [family POACEAE ] (stored under name); Oryza breviligulata A.Chev. & Roehr. [family POACEAE ] Verified by Roshevitz,
Related name
  • Oryza longistaminata
  • Oryza stapfii
  • Oryza perennis
  • Oryza silvestris
  • Oryza breviligulata
  • Oryza barthii

Flora

Entry for ORYZA longistaminata A. Chev. & Roehr. [family POACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, Part (Part 1), page 1, (1970) Author: W. D. Clayton
Names
ORYZA longistaminata A. Chev. & Roehr. [family POACEAE], in Compt. Rend. Acad. Sci. 159: 561 (1914). Type: Chad, Fort Lamy, Chevalier 10306 (P, lecto., K, photo.!)
ORYZA silvestris A. Chev. [family POACEAE], in Bull. Mus. Hist. Nat. Paris 16: 405 (1911), nom. nud.
ORYZA barthii [family POACEAE], [sensu Ann. list grasses Ug.: 29 (1947); Troupin, Fl. Garamba 1: 60 (1956); F.P.S. 3: 493 (1956); R.K.G.: 35 (1958); Ann. list Nyasaland grasses: 50 (1958); I.G.U.: 43 (1960); Tateoka in Bot. Mag. Tokyo 75: 455 (1962), non A. Chev.]
ORYZA perennis [family POACEAE], [sensu G.T.: 49 (1965), non Moench. The type of Moench’s species was a plant cultivated at Marburg, now lost, but the description suggests that it was a form of O. sativa. The correct application of the name cannot now be ascertained, and it is best discarded.]
Information
Perennial with extensive creeping underground rhizomes. Culms ± 120 cm. high, soft and spongy, up to 1 cm. in diameter at the base, often decumbent and rooting at the lower nodes. Leaf-blades up to 45 cm. long and 1.5 cm. broad; ligule 15–45 mm. long, glabrous, acute, often split down the middle. Panicle typically 20–30 cm. long. Spikelets narrowly oblong, 7–9 mm. long, scabrid to hispid, deciduous, obliquely articulated with the pedicel; sterile lemmas lanceolate, 2–3 mm. long; awn 4–8 cm. long, rigid. Fig. 10/5, 6, 8, p. 29.
Range
DISTR. U1, 3, 4; K7; T3–8 throughout tropical Africa, extending to South West Africa and South Africa (Transvaal)
Altitude range
sea-level to 1400 m.
Distribution
KENYA Kwale District Kiwambali, 4 Aug. 1948, J. A. Allan 111!KENYA Tana River District near Garsen, 24 Mar. 1934, Sampson 58!TANGANYIKA W. Usambara Mts., Mtarawanda, 5 July 1934, Greenway 3999!TANGANYIKA Buha District Kaberi swamp, 10 Aug. 1950, Bullock 3119!TANGANYIKA Songea District R. Ruvuma crossing 30.5 km. W. of Songea, 10 Apr. 1956, Milne-Redhead & Taylor 9499!UGANDA Karamoja District Komolo, 7 Nov. 1956, Harker 459!UGANDA Teso District Amuria, 14 Sept. 1946, A. S. Thomas 4542! & Soroti, Sept. 1954, Lind 400!
Distribution (external)
Madagascar
Notes
The names of the wild rices have been widely misapplied. For a discussion of nomenclature and typification see Clayton in K.B. 21: 488 (1968).

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