Prototype quillwort (Isoetes prototypus) COSEWIC assessment and status report: chapter 15
Collections Examined
The known collections of I. prototypus have all been examined by D.M. Britton and/or D.F. Brunton, and there is little value in examining them further: The herbaria where these collections are housed are as follows: ACAD, BM, CAN, DAO, DFB, GH, HCOA, MIL, NBM, NY, OAC, UNB.
It is highly unlikely that collections of I. prototypus made prior to 1992 have been overlooked by Isoetes researchers, since Isoetes specimens from all major herbaria in northeastern North America have been critically examined by D.M. Britton, W.C. Taylor and/or D.F. Brunton.
The identity of I. prototypus specimens collected in 2003 from all Canadian sites was confirmed by D.M. Britton.
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