Festuca donax
{{Short description|Species of grass}}
{{Speciesbox
|image =
|genus = Festuca
|species = donax
|authority = Lowe
|synonyms = Drymochloa donax {{small|(Lowe) H.Scholz & Foggi}}
|synonyms_ref = {{cite web |title=Festuca donax Lowe |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:402672-1 |website=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |access-date=17 February 2025}}
}}
Festuca donax is a species of grass. It is native to the Madeira archipelago in the Atlantic Ocean.
Description
The plant is perennial and caespitose with {{convert|60|–|120|cm}} long culms that grow in a clump. The ligule is {{convert|3|–|5|mm}} long and is going around the eciliate membrane. Leaf-blades are {{convert|5|–|10|cm}} broad with scabrous margins. The panicle is elliptic, open, inflorescenced and is {{convert|18|–|30|cm}} long. Spikelets are elliptic, solitary, {{convert|5.5|–|6.5|mm}} long, and carry fertile ones which have 2–3 fertile florets that are diminished at the apex.{{cite web|url= http://www.kew.org/data/grasses-db/www/imp04533.htm|author1=W.D. Clayton |author2=M. Vorontsova |author3=K.T. Harman |author4=H. Williamson |title=Festuca donax|publisher= GrassBase|work=The Board of Trustees and Royal Botanic Gardens|place=Kew|date=November 16, 2012|accessdate=December 6, 2013}}
The glumes are chartaceous, lanceolate, keelless, with acuminate apexes, with only difference is in size. The upper one is {{convert|5|–|6.2|mm}} long while the other one is {{convert|4.5|–|5.3|mm}} long. Fertile lemma is {{convert|4.4|–|5.2|mm}} long and is also chartaceous, ovate and keelless. Lemma itself is muticous with acute apex and scaberulous surface. Flowers have a hairy ovary and three stamens that are {{convert|3|mm}} long. The fruits are caryopses with an additional pericarp, which just like flowers is hairy as well. Hilum is linear.
References
{{Reflist}}
{{Taxonbar|from=Q15298413}}
Category:Endemic flora of Madeira
Category:Plants described in 1831
{{Pooideae-stub}}