Thysanolaena latifolia (Roxb. ex Hornem.) Honda

J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot. 3: 312 (1930).- Type:

Melica latifolia Roxb. ex Hornem., Hort. Bot. Hafn. Suppl. 117 (1819) ;

Thysanolaena maxima (Roxb.) Kuntze, Revis. Gen.Pl. 2: 784 (1891).

Regional litterature: Fl. Gabon 5: 236 (1962).

Description:

* Caespitose perennial of 2-4 m high. Culms solid. Leaves 30-60 cm long and 3-7 cm wide, stiff, distinct cross veins, margins scaberulous, base broad and rounded; ligule an eciliate membrane, leaves deciduous at the ligule.

* Inflorescence  a large drooping panicle of 30-60 cm long and 15-30 cm wide, contracted about the primary branches, these bearded in  the axils. Pedicels shortly pedicelled.

* Spikelets  lanceolate, laterally compressed, 1.5-2 mm long, falling entire; one basal steril floret, one fertile floret and a barren rhachilla extension of 0.2 mm long. Glumes similar, 0.6 mm long, membranous, 1-veined, acute. Sterile lemma lanceolate, 1.8 mm long, membranous; fertile lemma 1.4 mm long, membranous but thinner on the margins. Anthers 2, 0.6-1 mm long; stigmas 2. Caryopsis subglobese, 0.6 mm long.

Distribution West Africa: introduced Gambia (Plant List), RCA, Chad (Fl. Gabon 5)

Distribution world-wide: E and SE Asia, introduced DRC and Tanzania, Caribbean

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