Panicum manongarivense A. Camus in Bull. Soc. Bot. France 72: 707. 1925 Revision of the group previously known as Panicum L. (Poaceae: Panicoideae) in Madagascar Vorontsova, Maria S. Candollea 2018 2018-11-05 73 2 143 186 75N3F A. Camus A. Camus [839,1247,1473,1498] Liliopsida Poaceae Panicum Plantae Poales 23 166 Tracheophyta species manongarivense     Lectotypus(designated here):  MADAGASCAR. Prov. Antsiranana: massif de Manongarivo,  IV.1909,  Perrier de la Bâthie11091( P[ P00450232]!;  isolectotype: K[ K000244705]!, P[ P00450233]!, TAN[ TAN000390]!). Delicate prostrate or ascending annual to 50 cmlong, the culms glabrous. Ligulea lacerate ciliolate membrane, c. 0.7 mmlong, with brown membranous auricles 1– 1.5 mmlong on mature leaves. Leaf bladesovate to lanceolate, membranous, 0.5–4.5 × 0.2–0.8 cm, drying glaucous, glabrous to sparsely hirsute on both sides. Paniclesterminal and axillary, pendent, partly exserted with no clear peduncle, 0.5–7 cmlong, diffuse, the branching distichous or in threes, the branches filiform, partly divergent at maturity, glabrous or with numerous white cilia exceeding the spikelet, the pedicels 1–6 mmlong. Spikeletsovate to oblong, apically rounded, 0.9–1.1 mmlong, almost white, never gaping open. Lower glumea nerveless vestige of variable shape. Upper glume½ to as long as the spikelet, translucent, 3-veined, with small trichomes between the veins or towards the apex. Lower floretbarren, without significant palea. Lower lemmatranslucent, 3–5-veined, with minute trichomes between the veins or towards the apex. Upper lemmasmooth, shiny, pale.   Distribution and ecology. – Endemic to Manongarivo and nearby; humid mid-elevation habitats, 500–1500 m( Fig. 10A).   Notes. – Close to  P. mitopusbut spikelets smaller and white. The lectotypehas been chosen from two sheets of original material examined by Camus at P and constitutes the higher quality reproductive material.   Additional material examined. –   MADAGASCAR. Prov. Antsiranana: Manongarivo, Antsatrotro E of Ankaramy, 14°05'S 48°23'E,  26.III.1993,  Malcomber et al. 2310( K[ K000805497], P[ P06795304]);  Manongarivo, E de Ankaramy-be, Bekolosy, 14°04'S 48°17'E,  IV.1993,  Rakotomalaza21( P[ P02373631]);   10 kmSW of Andranomololo, 14°21'34"S 49°22'35"E,  IV.2006,  Rakotovaoet al. 3178( P[ P02309332]). 3472816357 1909-04 P Perrier de la Bathie Madagascar massif de Manongarivo 23 166 P00450232 1 Prov. Antsiranana lectotype 3472816744 1909-04 K, P, TAN de Manongarivo & Perrier de la Bathie Madagascar Antsiranana 23 166 K000244705, P00450233, TAN000390 1 Antsiranana isolectotype 3472816958 1993-03-26 K, P Malcomber et al Madagascar Manongarivo -14.083333 Antsatrotro E of Ankaramy 1289 48.383335 Antsatrotro 25 168 K000805497, P06795304 1 Prov. Antsiranana 3472817192 1993-04 P Rakotomalaza Madagascar Manongarivo -14.066667 E de Ankaramy-be 1289 48.283333 Ankaramy-be 25 168 P02373631 1 Prov. 3472816509 2006-04 P Rakotovao Madagascar -14.359445 Andranomololo 21 49.37639 25 168 P02309332 1 Prov.