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.
1Lemmas firmly keeled on the back
1'Lemmas rounded on the back
2Plants bulbous at the base (P. bulbosa group)
2'Plants not bulbous
3Ligule 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
4Lemma 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
5Plants with moniliform rhizomes; spikelets usually 2-flowered
5'Plants without moniliform roots or rhizomes; spikelets always 3- or more-flowered
6Annual or biennial
7Anthers 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
8Ligule pointed; lower sheaths scabrid; stolons present but no rhizomes
8'Ligule truncate or rounded; lower sheaths smooth; plants rhizomatous
9Culms strongly compressed; lateral nerves of the lemmas obscure
9'Culms terete; lateral nerves of the lemmas prominent
10Basal leaves very narrow, c. 1 mm wide; lemmas 2-3 mm long
10'Basal leaves 2-4 mm wide; lemmas 3-4 mm long