Poa angustifolia L.

Olovona, Marina V. & Nikolin, E. G., 2018, Bluegrasses (Poa L., Poaceae) of Sakha (Yakutia) Republic, an annotated checklist, Adansonia (3) 40 (7), pp. 89-102 : 93

12. Poa angustifolia L.

In Species Plantarum: 67 (1753). — Rozhevitz, Flora of the USSR 2: 388 (1934). — Tzvelev, Arctic Flora of the USSR 2: 139 (1964). — Perfiljeva, Identification Book of High Plants of Yakutia: 73 (1974). — Olonova, Flora of Siberia 2: 170 (1990). — P. pratensis subsp. angustifolia (L.) Dumort., Observations sur les Graminées de la Flore Belgique: 112 (1824). — Tzvelev, Grasses of the USSR: 458 (1976).

LECTOTYPUS. — “ Habitat in Europa ad agrorum versuras (LINN- 87.12, excluding second culm from the left”( LINN) (Soreng in Cafferty et al. 2000: 254). — Steppes and dry meadows: Ald, Arc, Ol, C-Y, Y-I .

GENERAL DISTRIBUTION. — Scand., Atl. and Middle Eur., East Eur., Cauc., Sib., Rus. Far East, Middle Asia, Mediterr., Ir., Himal., Jung.-Kashg., Mong., Jap.-Chin, N Amer.

REMARK

This species is a steppe race of P. pratensis s.l. or steppe segregate of P.pratensis Aggr.R. Soreng treats P.angustifolia as a low polyploid (2n = 28-49) taxon of Mediterranian and Iranoterranian steppes and arid forests.The studies have shown( Olonova 2007), that neither the width of the vegetative shoots leaves, nor even the characters of habit do not provide the complet success in distinguishing of P.angustifolia and P.pratensis . These characters rather reflect the evolutionary trends, and P. angustifolia is very close to P. pratensis . To avoid the confusion, ones should be especially attentive, attributing the narrow leaf samples of Aggr. P. pratensis to P.angustifolia , because the narrow and folded leaves are characteristic not only for samples of semiarid habitat, like steppes, but also in the wet meadows and peat bogs. Wetland plants of boreal regions belong to other subspecies or species of the Poa pratensis complex. The narrow leaves in the wet land plants are not like those of P. angustifolia ( Olonova 2007) .