Why are plant names changing so much?

References

1. 1. Beitel JM,
   2. Mickel JT.

   1992.The Appalachian firmoss, a new species in the Huperzia selago (Lycopodiaceae) complex in eastern North America, with a new combination for the western firmoss. American Fern Journal 82:41–46.

   OpenUrl
2. 1. Haines AA.

   2003. The families Huperziaceae and Lycopodiaceae of New England: a taxonomic and ecological reference, Bowdoin (ME): VF Thomas Co. 100 p.
3. 1. Kujawski J,
   2. Ogle D.

   2005. Not your grandpa’s cultivars: the new conservation releases. Native Plants Journal 6:49–51.

   OpenUrlAbstract/FREE Full Text
4. 1. Radford AE,
   2. Ahles HE,
   3. Bell CR.

   1968. Manual of the vascular flora of the Carolinas. Chapel Hill (NC): University of North Carolina Press.
5. 1. Rydberg PA.

   1922. Flora of the Rocky Mountains and adjacent plains. Second edition. New York (NY): Published by the author.
6. 1. Small JK.

   1933. Manual of the southeastern Flora. Chapel Hill (NC): University of North Carolina Press.
7. 1. [USDA NRCS] USDA Natural Resources Conservation Service.

   2004. The PLANTS database, version 3.5. URL: http://plants.usda.gov (accessed 15 Oct 2004). Baton Rouge (LA): National Plant Data Center.
8. 1. Wagner WH Jr.,
   2. Beitel JM.

   1992. Generic classification of modern North American Lycopodiaceae. Annals Missouri Botanical Garden 79:676–686.

   OpenUrl
9. 1. Wagner WH Jr.,
   2. Beitel JM.

   1993. Lycopodiaceae. In: Flora of North America editorial committee. Flora of North America north of Mexico. Volume 2, pteridophytes and gymnosperms. New York (NY): Oxford University Press. 475 p.

   OpenUrl
10. 1. Wikström N,
    2. Kenrick P.

    2000. Relationships of Lycopodium and Lycopodiella based on combined plastid rbcL gene and trnL intron sequence data. Systematic Botany 25:495–510.

    OpenUrlCrossRefWeb of Science
11. 1. Wikström N,
    2. Kenrick P.

    2001. Evolution of Lycopodiaceae (Lycopsida): estimating divergence times from rbcL gene sequences by use of nonparametric smoothing. Molecular Phylogenetics and Evolution 19:177–186.

    OpenUrlCrossRefPubMedWeb of Science