Compilation
Rottboellia thomaea

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Name

Identification
Oropetium thomaeum (L.f.) Trin. [family POACEAE ] (stored under name); Nardus thomaea L.f. [family POACEAE ] Rottboellia thomaea (L.f.) Willd. [family POACEAE ]
Related name
  • Rottboellia sp.
  • Nardus thomaea
  • Rottboellia thomaea
  • Oropetium thomaeum

Flora

Entry for OROPETIUM thomaeum (L. f.) Trin. [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 2), page 177, (1974) Author: W. D. CLAYTON, S. M. PHILLIPS AND S. A. RENVOIZE
Names
OROPETIUM thomaeum (L. f.) Trin. [family POACEAE], ,Fund. Agrost.: 98 (1820); R.K.G.: 26 (1958); G.T.: 43 (1965). Type: India, Tranquebar, Koenig (LINN, holo.!)
Nardus thomaea L. f. [family POACEAE], Suppl. Pl.: 105 (1781)
Rottboellia thomaea (L. f.) Willd. [family POACEAE], Sp. Pl. 1: 464 (1797)
Information
Tiny tufted perennial with culms up to 5 cm. high. Leaf-blades rolled, 1.5–3 cm. long, up to 0.8 mm. wide when flattened. Spikes straight or curved, 1–4 cm. long, up to 1 mm. wide; rhachis tough, always very wavy and somewhat spongy. Spikelets always in opposite ranks and deeply embedded; lower glume 0.4 mm. long, truncate to acute; upper glume (1.8–)2–2.5 mm. long, 3-nerved, acute, the tip often divergent at maturity; lemma obovate, 0.7–1 mm. long, 1(–3)-nerved, obscurely mucronulate. Caryopsis obovate, 0.5–0.8 mm. long.
Range
DISTR. K2, 4, 6, 7; T3
Altitude range
600–1000 m.
Distribution
KENYA W. Suk District Masol plains 24 km. SW. of Kalossia, 2 Dec. 1959, Bogdan 4949!KENYA Kitui District 24 km. W. of Kitui, 3 May 1961, Bogdan 5123 !KENYA Teita District Tsavo National Park East, 19 Jan. 1961, Greenway 9784 !TANZANIA Pare District Kisangara, May 1928, Haarer 1259! & Same, June 1965, Wingfield 157!
Distribution (external)
India
Notes
This species may be confused with marginal specimens of O. capense Stapf, which differs in having a fragile rhachis and larger elliptic-oblong florets.

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