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Triticeae Home Page; Intermountain Herbarium; Manual of Grasses for North America; Stipeae This page: Generic Description; List of taxa and their distribution; reproductive characteristics

This page, and its subsidiary pages, are being developed primarily as a place to store available information about Pseudoroegneria; they do not reflect research that I have done. Anyone is welcome to use the information. In the old days, notes such as these would have been stored in a file cabinet, not made publicly available. I am placing them on the Web for my convenience; if you find them useful, great. I welcome comments and pertinent reprints and will try to incorporate them into the site, with appropriate credits as time permits. Since writing that, Dr. Bjorn Salomon has kindly sent additional information.

Generic Description

Plants cespitose, sometimes densely so, sometimes shortly rhizomatous. Culms 30-90 cm tall. Leaves flat or convolute. Spikes with widely spaced, solitary spikelets; rachises nearly glabrous or scabridulous, internodes concave adjacent to the spikelets. Spikelets with 3-5 florets, appressed. Glumes 5-8 mm, lanceolate or narrowly lanceolate, acuminate, glabrous, 5-7-veined, midveins sometimes scabridulous distally, apices subacute, acuminate, obtuse, or truncate; lemmas usually glabrous, linear-lanceolate, scabrous, unawned or awned, awns 8-30 mm, strongly divergent at maturity; paleas equal to the lemmas, margins and distal portion of the keels often ciliate; anthers 4-7 mm; rachillae glabrous. Haplome St; diploids and tetraploids known.

Warning! The genomic composition of many of these entities has been inferred, not determined. Eventually I plan to find out, and add to these pages, for which species it is known - and whether known via cytology or DNA analysis. If sending me information, please cite the relevant publication.

Reproductive characteristics

Species of Pseudoroegneria are, in general, out-crossing and self-incompatible. They also have an astounding ability to distribute and accept pollen, from their own and other species. Unfortunately, 'other' species does not mean just other species of Pseudoroegneria. This, combined with their self-incompatibility, presents major obstacles to the development of 'pure' lines as well as the maintenance of genebank accessions.


Taxonomic listing. The following table is based on Löve (1984). Pseudoroegneria strigosa is the type species; hence its distinctive color in this table.

[Roegneria alashanica?; no combination in Pseudoroegneria ] China: Nigxia
Ps. armena Stony slopes and steppes; up to middle mountain belt. Caucasus; southern caucasus. 
Ps. cognata Stony slopes, rocks, and screes; lower and middle mountain belts. Russia: Central Aisa (Jungaria-Tarbagatai, Tien Shan, Gissari-Davarz, Alai). Jungaria-Kashgaria. Kashmir. Tibet
  subsp. cognata [subsp. shingoensis is based on the same type as subsp. cognata and is, therefore, not a valid name (Cope 1982). It also implies that there are not two entities involved. If there are, someone needs to demonstrate the fact and provide a name, based on an appropriate type specimen,  for the non-cognata element]. 
  subsp. shingoensis
Ps. cretacea [included in Ps. stipifolia by Melderis and Tsvelev]
Ps. divaricata
  subsp. divaricata Rocky limestone slopes; 1000-2700 m. [Melderis includes in Elymus lazicus, a name not cited by Löve] Turkey: Inner and southern Anatolia.
  subsp. attenuatiglumis On stony slopes and rocks. Caucasus (Endemic to southeastern Azerbaijan)
Ps. dshinalica Limestone rocks Caucasus: Ciscaucasus.
Ps. elytrigioides Eastern Tibet
Ps. geniculata
  subsp. geniculata Stony slopes, rocks, and screes; up to middle mountain belt. Russia: Western Siberia (Altai), Eastern Siberia (Agara-Sayan. Mongolia.
  subsp. nevskii recent
  subsp. pamirica India: Pamir region
  subsp. pruinifera Stony slopes and rocks (mostly on limestone); up to lower mountain belt. Russia: Europe (Ural, Volga-Don), Western Siberia (Upper Tobol). Endemic.
  subsp. scythica Limestone rocks and stony slopes; lower mountain belt. Caucasus: Crimea. Endemic.
Ps. gracillima [=  P. tauri subsp. libanotica] Limestone rocks and stony slopes; lower and middle mountain belts Caucasus: Dagestan, the Great Caucasus.  Endemic.
Ps. heidemaniae On limestone rocks; lower mountain belt. Caucasus; southern Caucasus. Endemic.
Ps. kosaninii Calcareous rocks; 1500-2400 m Turkey: Anatolia, Iran, Iraq.
Ps. kotovii recent
Ps. ninae recent
Ps. pertenuis [best excluded] Stony slopes and rocks; middle mountain belt. Caucasus: Great Caucasus, Talysh. Endemic.
Ps. sosnovskyi [=  P. tauri subsp. libanotica] Dry mountain slopes and rocks. Turkey: Anatolia. Endemic.
Ps. spicata
  forma spicata. (ined.) Steppes and rocky slopes Western North America
  forma inermis (ined.) Steppes and rocky slopes Western North America
  forma pubescens (ined.)  U.S.A.: Oregon, Idaho, Washington
Ps. setulifera Stony slopes and rocks; middle mountain belt. Russia: Central Asia (Gissar-Darvaz, Pamir. Endemic.
Ps. stewartii 2700-3100 m Kashmir: Baltistan. Endemic
Ps. stipifolia Chalk and limestone outcrops, screes; up to lower mountain belt. Russia: Europe (Volga-Don), Black Sea, Lower Don, Crimea); UkraineCaucasus (Ciscaucasus)
Ps. strigosa 
  subsp. strigosa Limestone rocks, screes, and stony slopes, up to middle mountain belt. Russia Crimea. Endemic.
  subsp. aegilopoides Stony slopes, rocks and screes; up to the middle mountain belt. Russia: Western Siberia (Altai), Eastern Siberia (Enisei, Angara-Sayan, Dauria; Central Asia (Jungaria-Tarabagatai, Tien-Shan). Mongolia
  subsp. amgumensis Stony slopes and rocks; lower and middle mountain belts Russia: Uda region (far eastern)
  subsp. jacutorum Stony slopes and rocks; up to middle mountain belt Russia: Eastern Siberia (Lower Kolmya, Lena Kolmya), Okhotsk, Zee-Bureya.  Endemic.
  subsp. kanishiroi Mongolia
  subsp. reflexiaristata Stony slopes and screes (mostly limestone); up to lower mountain belt. Russia: Europe (Kama basin, Ural). Endemic.
Ps. tauri
  subsp. tauri Rocky slopes, mountain pastures; 950-2800 m. Turkey: Anatoila, iraq, Iran, Syria.
  subsp. libanotica Dry, igneous mountain slopes, limestone ravines; 1600-2000 m. Turkey: Anatolia. Lebanon, Iran, Iraq.