Compilation
Poa macilenta

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Name

Identification
Eragrostis macilenta (A.Rich.) Steud. [family POACEAE ] (stored under name); Verified by unknown, Poa macilenta A.Rich. [family POACEAE ] Verified by unknown,
Related name
  • Eragrostis macilenta
  • Poa macilenta

Flora

Entry for ERAGROSTIS macilenta (A. Rich.) Steud. [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
ERAGROSTIS macilenta (A. Rich.) Steud. [family POACEAE], ,Syn. Pl. Glum. 1: 268 (1854); Ann. list grasses Ug.: 19 (1947); F.P.N.A. 3: 162 (1955); F.P.S. 3: 454 (1956); R.K.G.: 20 (1958); I.G.U.: 31 (1960); G.T.: 31 (1965); Clayton in F.W.T.A., ed. 2, 3: 391 (1972). Type: Ethiopia, Tigre, Adua [Adoua], Quartin Dillon (P, holo.)
Poa macilenta A. Rich. [family POACEAE], Tent. Fl. Abyss. 2: 428 (1851)
Eragrostis decidua Hochst. [family POACEAE], in Flora 38: 324 (1855). Type: Ethiopia, Semien, Schimper in Buchinger 770 (STR, holo. !)
Eragrostis passa Rendle [family POACEAE], in Cat. Afr. Pl. Welw. 2: 238 (1899); G.T.: 32 (1965). Type: Angola, Huila, Lopollo, Welwitsch 2656 (K, iso. !)
Eragrostis dekindtii Pilg. [family POACEAE], in E.J. 40: 83(1907); Ann. list grasses Ug.: 19(1947). Type: Angola, Huila, Monhino [Monnyino], Dekindt 425 (K, iso.!)
Eragrostis pseudonigra Mattei [family POACEAE], in Contr. Biol. Veg. R. Inst. Bot. Palermo 4: 246 (1909). Type: Ethiopia, Eritrea, Mai-Hinsi, Terracciano & Pappi 239 (FI, iso.!)
Eragrostis mexicana [family POACEAE], [sensu Peter, F.D.O.-A. 1: 333 (1931), non (Hornem.) Link]
Eragrostis nigra [family POACEAE], [sensu Piovano in Webbia 13: 307 (1957), non Steud.]
Information
Loosely tufted annual; culms 7–60 cm. high, erect or ascending. Leaf-blades flat, 2–20 cm. long, 2–5 mm. wide, thin, light green, without glands. Panicle ovate-elliptic, 3–35 cm. long, diffuse, with slender pedicels (lateral pedicels 2–12 mm. long), eglandular; lower branches usually solitary or paired, sometimes ± whorled. Spikelets 5–14-flowered, oblong, 3–6 mm. long, 1–2 mm. wide, the florets diverging at 45°, light green to almost black, breaking up from the base, the rhachilla persistent; glumes narrowly ovate, subequal, 1.1–1.5 mm. long, acuminate; lemmas subrotund (narrowly ovate in side view), 1.3–1.6 mm. long, smooth or scaberulous, acute; palea scaberulous on the keels, persistent; anthers 3, 0.3–0.5 mm. long. Caryopsis broadly oblong, 0.5 mm. long. Fig. 62/4, p. 196.
Range
DISTR. U1–4; K1, 3–6; T2–4, 6–8 Ivory Coast to Ethiopia and southwards to Zambia; a single record from India
Altitude range
800–2900 m.
Distribution
KENYA Meru, 14 Dec. 1949, Bogdan 2732 !KENYA Nairobi, 29 May 1964, Bogdan 5708 !KENYA Masai District near Mara R., Ngerende, 13 Apr. 1961, Glover, Gwynne & Samwell [ Paulo ] 520 !TANZANIA Arusha National Park, Small Momella Lake, 27 Apr. 1968, Greenway & Kanuri 13524!TANZANIA Ufipa District Namwele, 23 Feb. 1950, Bullock 2548!TANZANIA Songea District Matengo Hills, Miyau, 28 Feb. 1956, Milne-Redhead & Taylor 8758 !UGANDA Toro District Kichwamba [Kichawamba], Dec. 1925, Maitland 1448! & Fort Portal, 4 Mar. 1932, Hazel 185 !UGANDA Mengo District Old Entebbe, 28 Jan. 1956, Harker 156 !
Notes
E. macilenta may usually be recognized by its dark coloured spikelets and narrow acuminate glumes. It approaches E. minor, which has a rather stiff panicle with shorter pedicels and obtuse lemmas. It may also be mistaken for 30, E. gangetica, which has a globose grain and only 2 stamens, and E. homblei, a perennial species.  It is very closely allied to E. mexicana (Hornem.) Link, an American species with longer lemmas (2–2.3 mm.), and to E. nigra Steud., an Indian perennial.

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