Festuca donax

Festuca donax
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Poaceae
Subfamily:	Pooideae
Genus:	Festuca
Species:	F. donax
Binomial name
	Festuca donax; Lowe

Festuca donax is a species of grass which can be found in Africa and Macaronesia.[1]

Description

The plant is perennial and caespitose with 60–120 centimetres (24–47 in) long culms that grow in a clump. The ligule is 3–5 millimetres (0.12–0.20 in) long and is going around the eciliate membrane. Leaf-blades are 5–10 centimetres (2.0–3.9 in) broad with scabrous margins. The panicle is elliptic, open, inflorescenced and is 18–30 centimetres (7.1–11.8 in) long. Spikelets are elliptic, solitary, 5.5–6.5 millimetres (0.22–0.26 in) long, and carry fertile ones which have 2–3 fertile florets that are diminished at the apex.[1]

The glumes are chartaceous, lanceolate, keelless, with acuminate apexes, with only difference is in size. The upper one is 5–6.2 millimetres (0.20–0.24 in) long while the other one is 4.5–5.3 millimetres (0.18–0.21 in) long. Fertile lemma is 4.4–5.2 millimetres (0.17–0.20 in) 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 3 millimetres (0.12 in) long. The fruits are caryopses with an additional pericarp, which just like flowers is hairy as well. Hilum is linear.[1]

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References

W.D. Clayton; M. Vorontsova; K.T. Harman; H. Williamson (November 16, 2012). "Festuca donax". The Board of Trustees and Royal Botanic Gardens. Kew: GrassBase. Retrieved December 6, 2013.

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[kew-1] W.D. Clayton; M. Vorontsova; K.T. Harman; H. Williamson (November 16, 2012). "Festuca donax". The Board of Trustees and Royal Botanic Gardens. Kew: GrassBase. Retrieved December 6, 2013.