Poa
Meikle, R.D. 1985: Flora of Cyprus 2Scholz, H. 1984: Poa-Studien 1. - Neue Taxa des Poa bulbosa-Komplexes aus dem Mittelmeergebiet. – Bot. Chron. (Patras) 3: 15-21Scholz, H. 1985: Poa-Studien 4. - Über Poa hackelii Post und P. pelasgis sp. nova (Gramineae). – Willdenowia 15: 91-97 Taxa of the Poa bulbosa group are in need for further studies.
1 | Lemmas firmly keeled on the back |
1' | Lemmas rounded on the back |
2 | Plants bulbous at the base (P. bulbosa group) |
2' | Plants not bulbous |
3 | Ligule on stem leaves 5-8 mm long, on basal leaves up to 4 mm long; keels of palea aculeate-ciliate |
3' | Ligule on stem leaves up to 5 mm long, on basal leaves up to 2 mm long; keels of palea aculeate |
4 | Lemma hairs obtuse; spikelets up to 6-flowered, 4-6 mm long |
4' | Lemma hairs acute; spikelets 3-4-flowered, up to 3.2 mm long |
5 | Plants with moniliform rhizomes; spikelets usually 2-flowered |
5' | Plants without moniliform roots or rhizomes; spikelets always 3- or more-flowered |
6 | Annual or biennial |
6' | Perennial |
7 | Anthers minute, up to 0.5 mm long; lemmas 2-2.5 mm long |
7' | Anthers 0.8-1.3 mm long; lemmas 3-4 mm long |
8 | Ligule pointed; lower sheaths scabrid; stolons present but no rhizomes |
8' | Ligule truncate or rounded; lower sheaths smooth; plants rhizomatous |
9 | Culms strongly compressed; lateral nerves of the lemmas obscure |
9' | Culms terete; lateral nerves of the lemmas prominent |
10 | Basal leaves very narrow, c. 1 mm wide; lemmas 2-3 mm long |
10' | Basal leaves 2-4 mm wide; lemmas 3-4 mm long |