Poa supina Schrad., Fl. Germ. 1: 289. 1806.

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

14. Poa supina Schrad., Fl. Germ. 1: 289. 1806.

Poa annua var. varia Gaudin, Alpina 3: 29. 1808. [Type: "An den Bächen, auf den höheren Apen; auf der Scheideck. Seringe. Auf dem Gotthard häufig. Ø. Bl. im Sommer"].

Poa annua subsp. varia (Gaudin) Gaudin, Agrost. Helv. 1: 189. 1811.

Poa annua var. supina (Schrad.) Spenn., Fl. Friburg. 1: 127. 1825.

Poa annua subsp. supina (Schrad.) Husn., Graminées 51. 1898.

Poa exigua Foucaud & Mandon ex Husn., Gram. Fr. Belg. 88. 1899, nom. illeg., non Poa exigua Dumort., Gramin. Belg. 113. 1824.

Poa annua f. macranthera Lit. & Maire in Jahand. & Maire, Cat. Pl. Maroc 1: 66. 1931. [Type: "Sierra Nevada. Pyrénées. Corse. Alpes."].

Poa supina f. exigua Gamisans, Candollea 29: 48. 1974. [Type: "Massif du Cinto, Capo al Berdato, versans SSW, pozzine de pente, 2320 m, 1.8.1969, Gamisans 2912 (fl.); cirque de Trimbolacciu, couloir de Pampanosa, pelouse, 1880 m, 6.8.1970, Gamisans 2913 (fl.)"].

Ochlopoa supina (Shrad.) H. Scholz & Valdés, Willdenowia 36: 662. 2006.

Poa supina Ill. Pignatti (1982: 469).

Type.

"In summis alpibus Salisburgensibus (Mielichhoffer)". (Possible isotype conserved in LE according to PAF 2018).

Flowering.

June to August (September).

Ecology.

Perennial grasslands in wet places; edaphically indifferent; 1200-3481 m a.s.l.

Distribution.

C and SW Europe, Apennines, Fennoscandia and NE Russia, extending to the Rif (Morocco). Pyrenees, Cantabrian Mountains, Central System and Sierra Nevada. And. Port.: (BA)? (Mi)? (TM)? Spa.: Av Ge Gr Hu L Le M Na P S. For a representative list of studied materials, see Suppl. material 1.

Notes.

Plants from the Sierra Nevada tend to have glabrescent floral parts (lemmas and paleas) or an indumentum that is restricted to the basal zone of the central nerve; this contrasts with plants from some peripheral populations of this mountain massif (e.g. Lugros, Dehesa del Camarate, 2200 m, GDAC 41005) and other Iberian populations, none of which are usually glabrous. Although clearly corresponding to P. supina , the Sierra Nevada plants also resemble those of P. rivulorum Maire & Trab., Bull. Soc. Hist. Nat. Afrique N. 15: 395. 1924; P. annua var. rivulorum (Maire & Trab.) Lit. & Maire in Jahand. & Maire, Cat. Pl. Maroc 1: 66. 1931; P. alpina subsp. atlantica (Trab.) Romo, Treb. Inst. Bot. Barcelona 11: 40. 1987, syn. nov., non P. alpina var. atlantica Trabut in Maire, Mém. Soc. Sci. Nat. Maroc 7: 147. 1924; Ochlopoa rivulorum (Maire & Trab.) H. Scholz & Valdés, Willdenowia 36: 662. 2006], a tetraploid species (n = 14) endemic to Alto, Medio and Anti Atlas (Morocco), in that the flowers, as indicated by Maire (1955), are usually glabrous and rarely hairy at the base of the medial and marginal veins. The observed pattern in Sierra Nevada is perhaps simply infrapopulational variation.