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ERAGROSTIS tremula Steud. [family POACEAE]

Date Updated: 19 August 2007

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
ERAGROSTIS tremula Steud. [family POACEAE], ,Syn. Pl. Glum. 1: 269 (1854); Ann. list grasses Ug.: 20 (1947); Troupin, Fl. Garamba 1: 39 (1956); F.P.S. 3: 456 (1956); R.K.G.: 20 (1958); Ann. list Nyasaland grasses: 40 (1958); I.G.U.: 31 (1960); G.T.: 35 (1965); Clayton in F.W.T.A., ed. 2, 3: 391 (1972). Type: Sudan, Blue Nile Province, Abu Qurud [Abu-Gerad], Kotschy 6 (K, iso.!) Poa tremula Lam. [family POACEAE], Tab. Encycl. 1: 185 (1791). Type: Senegal, Roussillon (P, holo.) Eragrostis lamarckii Steud. [family POACEAE], Syn. Pl. Glum. 1: 269 (1854). Based on Poa tremula Lam. Eragrostis serpula Chiov. [family POACEAE], in Ann. 1st. Bot. Roma 8: 66 (1903). Type: Ethiopia, Eritrea, R. Barca, Terracciano & Pappi 2088 (FI, holo. !)
Information
Loosely tufted annual; culms 30–100 cm. high, erect or ascending. Leaf-blades flat, up to 20 cm. long, 5 mm. wide. Panicle ovate, 7–30 cm. long, very loose and open, the spikelets trembling on long fine pedicels, sometimes bearded in the axils. Spikelets 10–60-flowered, linear, 5–25 mm. long, 1.5–2 mm. wide, the lemmas closely imbricate and covering the rhachilla, purplish, breaking up from the base, the rhachilla persistent; glumes unequal, subacute, the lower narrowly ovate and 0.8–1.2 mm. long, the upper ovate and 1.2–1.5 mm. long; lemmas broadly ovate, 1.5–1.7 mm. long, obtuse (ovate and subacute in side view); palea scabrid on the keels, persistent; anthers 2, 0.3–0.5 mm. long. Caryopsis subglobose to broadly ovoid, 0.4–0.6 mm. long. Fig. 62/5, p. 196.
Range
DISTR. U1–4; K2, 5; T1, 4, 6, 8 throughout tropical Africa and in India
Altitude range
sea-level to 1600 m.
Distribution
KENYA Turkana District Kacheliba, 4 Dec. 1959, Bogdan 4964 !KENYA W. Suk District Suam R., Kongelai, 31 Mar. 1957, Versell in Bogdan 4492 ! & 55 km. N. of Kitale, 27 Nov. 1962, Bogdan 5604 !TANZANIA Mwanza District Ukiriguru, 1 May 1945, Greenway 7383 !TANZANIA Buha District Kasakela Reserve, 18 Nov. 1962, Verdcourt 3367!TANZANIA Masasi-Muiti, Apr. 1926, Schlieben 6424!UGANDA Teso District Abela, 24 Oct. 1939, A. S. Thomas 3048!UGANDA Mbale District Bukedi-Bunyole counties [Budama and Bunyuli], 21 June 1927, Snowden 1125!UGANDA Mengo District Nakasongola, 3 Jan. 1957, Harker 611 !
ERAGROSTIS tremula Steud. [family POACEAE]
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