| 词条 | Melica riograndensis |
| 释义 |
|image= |genus=Melica |species=riograndensis |authority=Longhi-Wagner & Valls }}Melica riograndensis is a species of grass that is endemic to Brazil.[1] DescriptionThe species is perennial and with short rhizomes and {{convert|16|–|30|cm}} long erect culms. The leaf-sheaths are tubular, have one closed end, and are glabrous on surface. The leaf-blades are {{convert|12|–|57|cm}} long by {{convert|1.3|–|1.5|mm}} wide with its surface being rough and scaberulous. The membrane is eciliated and is {{convert|2.5|-|3.2|mm}} long with the panicle being open, linear and {{convert|5|–|8|cm}} long. The main panicle branches are indistinct and almost racemose.[1] Spikelets are oblong, solitary, and have fertile spikelets that have filiformed pedicels. Both the upper and lower glumes are keelless, membranous, with obtuse apexes. Their other features are different though; Lower glume is obovate and is {{convert|5.8|–|6.3|mm}} long while their upper one is lanceolate and is {{convert|7|–|9|mm}} long.[1] Its lemma have prominent lateral veins with papillose surface and acute apex. Fertile lemma is chartaceous, keelless lanceolate, and is {{convert|7|–|7.2|mm}} long by {{convert|2|–|4|mm}} wide. Its palea have dentated apex and papillose surface. The species also carry 2–3 sterile florets which are barren, cuneate, clumped and are {{convert|2|-|3|mm}} long. Flowers are fleshy, oblong, truncate, and carry 3 anthers that are {{convert|0.7|–|1.2|mm}} long. The species' fruits have caryopsis with additional pericarp.[1] References1. ^1 2 3 {{cite web|url=http://www.kew.org/data/grasses-db/www/imp06179.htm|author1=W.D. Clayton |author2=M. Vorontsova |author3=K.T. Harman |author4=H. Williamson |title=Melica riograndensis|publisher=GrassBase|work=The Board of Trustees, Royal Botanic Gardens|place=Kew|date=November 16, 2012|accessdate=June 29, 2013}} {{Taxonbar|from=Q10328394}} 3 : Melica|Endemic flora of Brazil|Flora of South America |
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