• WordNet 3.6
    • n Festuca a genus of tufted perennial grasses of the family Gramineae
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Century Dictionary and Cyclopedia
    • n festuca A large genus of grasses widely distributed over the globe, but chiefly in temperate and colder regions. The number of species is variously estimated from 80 to 230, of which about 25 are found native in the United States. They are commonly known as fescue-grass, and are mostly low, slender grasses, valuable especially for pasturage. The meadow-fescue or tall fescue, F. elatior, and the sheep's fescue, F. ovina, are the most common in cultivation. F. scabrella is one of the more valuable bunch-grasses of the western territories of the United States. Blue fescue, F. glauca, with flue pale-blue leaves, is used for edgings.
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In literature:

Festuca irritans, F.M., Chath.
"Australia Twice Traversed, The Romance of Exploration" by Ernest Giles
I do not know its right name, and have seen it described as "Spinifex," "Porcupine Grass," "TRIODIA," "TRIODIA PUNGENS," and "FESTUCA IRRITANS.
"Spinifex and Sand" by David W Carnegie
The Spinifex so often mentioned is the Festuca (Triodia) irritans, the Spinifex of the Desert Explorers, but not of Science.
"Explorations in Australia" by John Forrest
Stipa very common, as well as Iris, Festuca vivipara, Astragali sp., and Artemisia.
"Journals of Travels in Assam, Burma, Bhootan, Afghanistan and TheNeighbouring Countries" by William Griffith
Festuca rubra L. Poa cenisea ALL.
"The Voyage of the Vega round Asia and Europe, Volume I and Volume II" by A.E. Nordenskieold
Festuca duriuscula Hard fescue.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3" by Various