Poa urssulensis Trin.

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 : 95

publication ID	https://doi.org/ 10.5252/adansonia2018v40a7
persistent identifier	https://treatment.plazi.org/id/553187AF-FFE5-9605-3634-59DEAF45FDA9
treatment provided by	Carolina
scientific name	Poa urssulensis Trin.
status

Treatment

24. Poa urssulensis Trin. View in CoL

In Mémoires présentés à l’Académie impériale des Sciences de St.- Pétersbourg par Divers Savans et lus dans ses Assemblées 2: 527 (1835). — Tzvelev, Grasses of the USSR: 471 (1976). — Olonova, Flora of Siberia 2: 185 (1990).

HOLOTYPUS. — “ Altai, ad fl. Urssul, 1833, A. Bunge ” ( LE!) ( Tzvelev 1976: 471). — Steppe and gravel slopes, among thickets. Ascending middle mountain belt. Ald, Y-I .

GENERAL DISTRIBUTION. — Scand., Atl. and Middle Eur., East Eur.,Cauc., Sib., Rus. Far East, Middle Asia, Mong., Jap.-Chin.

REMARK

This species was treated by Grisebach (Grisebach ex Ledebour 1853) and Krylov (1928) as a xeromorphic variety of P. nemoralis . The research has revealed this species to be a very difficult complex of hybrid structure. It combines populations, slightly more xeromorphic than P. palustris and P. nemoralis , but more mesomorphic than P. stepposa . It seems to contain both the xeromorphic derivates of P. insignis and the hybrids between the xeromorphic derivates of P. palustris and P. nemoralis .