Poa flaccidula Boiss. & Reut., Pugill. Pl. Afr. Bor. Hispan. 128. 1852.

Ortega-Olivencia, Ana & Devesa, Juan A., 2018, Updated checklist of Poa in the Iberian Peninsula and Balearic Islands, PhytoKeys 103, pp. 27-60: 27

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Poa flaccidula Boiss. & Reut., Pugill. Pl. Afr. Bor. Hispan. 128. 1852.


11. Poa flaccidula Boiss. & Reut., Pugill. Pl. Afr. Bor. Hispan. 128. 1852. 

Poa balearica  Porta, Nuov. Giorn. Bot. Ital. 19: 324. 1887. [Type: "M. Ad pedes rupium praeruptarum m. Coma den Ar-bona" (lectotype designated by Rosselló and Sáez 2000, pg. 141, second on left specimen: G].

Poa trivialis subsp. balearica  (Porta) Gand., Nov. Consp. Fl. Eur. 506. 1910, syn. nov.

Poa trivialis f. balearica  (Porta) Knoche, Fl. Balear. 310. 1921.

Poa trivialis var. balearica  (Porta) O. Bolòs & Molinier, Collect. Bot. (Barcelona) 5: tab. 7. 1958, comb. inval., syn. nov.

Poa zapateri  Gandoger, nom. in sched. (MA 11500). [Type: "Sierra de Albarracín”]

Poa ventalloi  Sennen, nom. nud., in sched. (Sennen BC-966297).

Ill. Devesa (1987: 264).


"Habitat in umbrosis septentrionalibus jugi Cerro de San Cristoval et Sierra de la Nieve ditionis Serrania de Ronda Junio 1849 (Boiss. et Reuter)" (lectotype designated by Hernández Cardona 1978, pg. 104-105, 337, left specimen on the sheet from Cerro de San Cristóbal, Reuter, 6-1849: G 00176652!).


April to July.


Stony places, cliffs, scrub clearings and understoreys, on limestone; (200) 700−2030 m a.s.l.


W Mediterranean region (S France [Provence], peninsular Spain, Balearic Islands and NW Africa [Morocco and Algeria]). S and E half of peninsular Spain and Mallorca. And. Spa.: A (Ab) (Al) B Bu Ca (Co) CR Cs Cu Gr Gu Hu J L Ma (Mu) (Na) PM[Mll] (S) So (T) Te To V Z. For a representative list of studied materials, see Suppl. material 1.


Spikelets in this species usually have 2-3 flowers, but can have 3-7, a rare phenomenon observed more frequently in populations in NE Spain. The most distinctive characteristic of Poa flaccidula  is the sericeous or appressed-hairy indumentum of the intervein zone of both the lemma and palea. This species is sometimes confused with P. annua  , but, along with other differences, the latter is an annual, not a perennial. Poa flaccidula  can also be confused with P. trivialis  , which, like P. flaccidula  , has a ligule that is longer than the width of the leaf blade and possesses hairs at the base of the lemma that are longer than its width; however, both the palea and the internerval surface of the lemma is glabrous in P. trivialis  .

P. flaccidula subsp. guadianensis  F.M. Vázquez, Folia Bot. Extremad. 9: 66 (2016) has recently been described from Extremadura (SW Spain), but examination of the type material (HSS 65616; COF 62937 isotypus) reveals that this taxon is in no way attributable to P. flaccidula  . The most we can say, given the immaturity of the specimens, is that it may be of hybrid origin, with P. bulbosa  possibly one of the parents.