Τετάρτη 1 Μαρτίου 2017

Poa annua L.

Οικογένεια: Αγρωστίδες
Poa annua L.
Usually annual, erect to shortly creeping. Stems 5-30 cm, slightly compressed. Leaves (1-)2-3 mm wide, thin, flaccid, often transversely wrinkled. Panicle (1-)3-8 cm, more or less pyramidal; lower branches in pairs, patent or deflexed after anthesis. Spikelets not crowded towards the ends of the panicle-branches, with 3-5 closely spaced florets. Glumes unequal. Lemma usually sparsely hairy on veins. Palea ciliate along the whole length of keels. Anthers 0·6-0·8(-1) mm, 2-3 times as long as wide. Flowering throughout the year. 2n = 28. Disturbed ground. (Περιγραφή απο Flora Europaea)
Loosely caespitose annual, rarely biennial; whole plant pale to fresh green, soft. Culms ascending, usually 5–15 cm. Leaf sheaths compressed; ligule 1.5–2.5 mm, membranous; blade 2–4 mm wide, suddenly contracted to an acute, hooded tip. Panicle lax, pyramidal or ovoid, greenish; branches patent or deflexed after anthesis. Spikelets 4.5–5.5 mm, 3- or 4-flowered, dense. Lemma 3–4 mm, sparsely hairy on keel and marginal veins. Anthers 0.6–0.9 mm, twice as long as broad. Tetraploid with 2n = 28. (Περιγραφή απο Strid)
Περισσότερες πληροφορίες στα Χλωρίδα μας, Φυτολόγιο, greekflora.gr, Flora of Greece.
Poa annua

Poa annua

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