|NOTE: The information referenced in Assadi
(1994) also appears in Assadi and Runemark and other papers by Assadi on
the citations page. I just happened to have Assadi 1994 handy as I
prepared these notes.
Pseudoroegneria cognata subsp. cognata: According to Löve (1984), Elytrigia geniculata subsp. ferganensis belongs here. As Elytrigia geniculata subsp. ferganensis, Assadi (1994) demonstrated, using cytogenetic methods, that its genomic constitution is St.
Pseudoroegneria gracillima: Assadi (1994) recommended including this taxon in Pseudoroegneria libanotica because of hybrids with that taxon showed regular meiosis and high pollen fertility.
Pseudoroegneria kosanininii: Assadi (1994) treats as a variety of Pseudoroegneria tauri. He suggested, on the basis of its morphology, that its genomic constitution would prove to be StP or StJ.
Pseudoroegneria pertenuis: treated as a subspecies of Pseudoroegneria tauri by Melderis in the Flora of Turkey. Assasi (1994) demonstrated that it is a heterogenomic species, the other genome being the P genome of Agropyron cristatum. Yen at al. (2005) transferred it to their new genus, Douglasdeweya.
Pseudoroegneria setulifera: Tsvelev suggested that this might be derived from an ancient Pseudoroegneria geniculata - Lophopyrum caespitosum hybrid.
Pseudoroegneria spicata: The awned and unawned forms of P. spicata have often been treated as distinct taxa but it is thought that the presence of the awn is determined almost entirely by a single gene complex, with possession of an awn being recessive. This means that the offspring of two unawned plants might be awned. Unfortunately, there are no hard data supporting this hypothesis. It is the working assumption of many plant breeders; in the absence of evidence to the contrary, the hypothesis is accepted. Little is know about the third infraspecific taxon which differs from the awned phase in being pubescent and, possibly, in some vegetative characters. There have been no studies designed to characterize the distribution of pubescence within the species, its association with other characters, or its heritability.
Pseudoroegneria strigosa subsp. aegilopoides shown to have a genomic constitution of St by Assadi (1994), using cytogenetic methods.