Can anyone identify this Primula?

[David Nicholson]

From  Richards' "Primula" page 108 - referring to P. vulgaris......
".... curiously, its scientific name is much less settled. Linnaeus' epithet acaulis first appears in a list without diagnosis or rank in Flora Anglica. This publication predates Hudson's vulgaris by nine years, but there is considerable dispute as to which rank Linnaeus considered it took.  As Linnaeus subsequently used acaulis only at varietal rank, current opinion suggests that it should not be considered to form the basionym for this species. Although this decision is now enshrined in Flora Europaea, this species is still usually  called P. acaulis in non-English-speaking areas.

  and in some English-speaking countries as well!

Many thanks for that Maggi, I see no need to change my labels

[Sally]

I just checked The Plant Lover's Guide to Primulas, by Jodi Mitchell and Lynn Lawson (of Barnhaven Primroses) and noticed that on page 63, P. acaulis is listed as a synonym for P. vulgaris. It looks like the authors differentiate  flowers on single stems as acaulis type and flowers with multiples on a stem as polyanthus type.  I've no idea where I picked up the "acaulis", but certainly long before I read the book and possibly years before joining The American Primrose Society. So it's floating out there in the gardening world; I regret my casual use of the word if it somehow promotes confusion! Thank you again for all the help identifying our beloved pink primrose!