Compilation
Rottboellia compressa

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Name

Identification
Rottboellia compressa L.f. [family GRAMINEAE ] Verified by Not on sheet, Hemarthria hamiltoniana Steud. [family GRAMINEAE ] (stored under name); Verified by Not on sheet, Hemarthria hamiltoniana Steud. [family GRAMINEAE ] Verified by Not on sheet,
Related name
  • Hemarthria altissima
  • Parapholis filiformis
  • Ophiuros compressus
  • Rottboellia heterochroa
  • Hemarthria fasciculata
  • Hemarthria japonica
  • Hermarthria protensa
  • Rottboellia compressa
  • Hemarthria compressa
  • Hemarthria hamiltoniana
  • Haemarthria precedentis
  • Hemarthria vaginata
  • Rottboellia laevispica
  • Hemarthria uncinata
  • Rottboellia protensa

Flora

Entry for HEMARTHRIA altissima (Poir.) Stapf & Hubbard [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, page 451, (1982) Author: W. D. CLAYTON and S.A. RENVOIZE
Names
HEMARTHRIA altissima (Poir.) Stapf & Hubbard [family POACEAE], in K.B. 1934: 109 (1934); Ann. list Nyasaland grasses: 42 (1958); G.T.: 113 (1965); Clayton in F.W.T.A., ed. 2, 3: 506 (1972). Type: Algeria, Bastion, Poiret (P, holo.)
Rottboellia altissima Poir. [family POACEAE], Voy. Barb. 2: 105 (1789)
Rottboellia fasciculata Lam. [family POACEAE], Tab. Encycl. Méth. Bot. 1: 204 (1791), nom. superfl., based on R. altissima Poir.
Hemarthria fasciculata (Lam.) Kunth [family POACEAE], Rév. Gram. 1: 153 (1829); F.T.A. 9: 55 (1917)
Rottboellia compressa (Lam.) Hack. var. fasciculata [family POACEAE], in DC., Monogr. Phan. 6: 286 (1889)
Manisuris fasciculata (Lam.) Hitchc. [family POACEAE], in Amer. Journ. Bot. 2: 299 (1915)
Rottboellia heterochroa Gand. [family POACEAE], in Bull. Soc. Bot. Fr. 66: 302 (1920). Type: South Africa, Landrivier, Schlechter 6906 (K, iso.!)
Manisuris altissima (Poir.) Hitchc. [family POACEAE], in Journ. Wash. Acad. Sci. 24: 292 (1934)
Hemarthria compressa (Lam.) Keng var. fasciculata [family POACEAE], in Contr. Biol. Lab. Sci. Soc. China, Bot. 10: 202 (1936)
Hemarthria compressa (Poir.) Maire subsp. altissima [family POACEAE], Fl. Afr. Nord 1: 261 (1952)
Information
Stoloniferous perennial; culms up to 2.5 m. long and 2–4 mm. in diameter, prostrate and rooting at the nodes below. Leaf-blades flat, 5–15 cm. long, 3–4 mm. wide. Racemes 4–10 cm. long, mostly borne singly in the axils and exserted from the axillary sheath. Sessile spikelet elliptic-oblong with a triangular callus; lower glume 4–6 mm. long, with or without a constriction near the apex, obtuse to emarginate; upper glume obtuse to acute. Pedicelled spikelet narrowly triangular, 4–6 mm. long, truncate at the base without a callus, subacute to acute at the tip.
Range
DISTR. T4, 6–8 Italy and Turkey, southwards to Nigeria and Ethiopia; Zambia southwards to the Cape; also in Madagascar, with isolated records in Burma, Thailand and Borneo; introduced to America
Distribution
TANZANIA Uzaramo District 13 km. S. of Dar es Salaam, Mzinga R., 13 Mar. 1971, Wingfield 1253!TANZANIA Rufiji District Rusende, 9 Feb. 1966, Nicholson 89!TANZANIA Songea District 8 km. W. of Songea, 9 Feb. 1956, Milne-Redhead & Taylor 8729!
Notes
H. altissima merges with H. compressa (L. f.) R. Br., a species from India and SE. Asia with a more slender habit and shorter sessile spikelets (lower glume 3–4 mm. long). The bulk of the plants fall readily enough into one or the other of the species, but there is sufficient intergradation to make the determination of marginal specimens uncertain.There is also a resemblance to H. sibirica (Gand.) Ohwi from China and Japan. This species has a similarly shaped sessile spikelet (lower glume 5–7 mm. long), but the articulation is transverse with the callus short and truncate.

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