Poa compressa L., Sp. Pl. 69. 1753.

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

publication ID

http://dx.doi.org/10.3897/phytokeys.103.26029

persistent identifier

http://treatment.plazi.org/id/C54A298B-5C00-2E90-DEBD-D3C2BBB8992F

treatment provided by

PhytoKeys by Pensoft

scientific name

Poa compressa L., Sp. Pl. 69. 1753.
status

 

7. Poa compressa L., Sp. Pl. 69. 1753. 

Poa planiculmis  Weber, Suppl. Fl. Holsat. 3. 1787. [Type: "Habitat in collibus prope Neumuhlen"].

Poa compressa var. depauperata  Mutel, Fl. Franç. 4: 81. 1837. [Type: "plante étiolée, forêts des Alpes et du Jura"].

Poa compressa var. langeana  (Rchb.) W.D.J. Koch, Syn. Fl. Germ. Helv. ed. 2: 932. 1844.

Paneion compressum  (L.) Lunell, Amer. Midl. Naturalist 4: 222. 1915.

Poa cenisia subsp. sardoa  E. Schmid, Vierteljahrsschr. Naturf. Ges. Zürich 78: 239. 1933. [Type: "Perdas Crapias am Gennargentu, 1820 m, Gneissfelsflur (22.VII.1923, b.) ..."].

Ill. Portal (2005: 95, 276), Soreng and Peterson (2012: 11, fig. I, F-M).

Type.

"Habitat in Europae & Americae septentrionalis siccis, muris, tedis" (lectotype designated by Soreng 2000, pg. 255: LINN-87.41!).

Flowering.

May to September (October).

Ecology.

Meadows and grasslands, forests, gravelly areas, margins of roads and slopes; edaphically indifferent, although preferring basic substrates; (75) 540−1990 (2300) m a.s.l.

Distribution.

Circumboreal (most of Europe, to SW Asia); introduced in N, C and S America (Peru, Argentina) and Australia. CN and E Spain, rarer in the south. And. Port.: TM. Spa.: A (Ab) B (Bi) Bu (Cs) Cu Ge Gr Gu H Hu J L (Le) Lo (Lu) M Na (Or) P S Sa Sg So T Te (V) Va Vi (Z) Za. For a representative list of studied materials, see Suppl. material 1.

Notes.

Plants of this species usually have a glaucous green colour. The lower (and sometimes higher) leaves of many studied herbarium specimens are missing their blades and are frequently fragmented with the ligule exposed. Inflorescences of P. compressa  are frequently narrow and interrupted, with almost adpressed branches and spikelets are variable in size and number of flowers. The spikelets may be long, almost always entirely glabrous and glaucous, with 4-9 flowers or short and bear 2-5 flowers, and this variability may be present in the same population or even on the same plant. Poa compressa  has not been previously listed in the flora of Portugal.

Kingdom

Plantae

Phylum

Tracheophyta

Class

Liliopsida

Order

Poales

Family

Poaceae

Genus

Poa