Dichotomous Keys

[DroseraBug]

Does anyone know of a really thorough dichotomous key of Sarraceniaceae that includes S. rubra ssp? I've had some S. rubra for 10+ years that I obtained just labeled as S. rubra and would like to get them identified down to ssp. if possible. I realize this group is highly variable like other Sarra species. Is this group mostly separated by locations and adaptations. Surely a good key has been written for Sarras. I'm so used to using Radford (NC and SC key) but it is a little older than many of these ssp. Any advice concerning literature would be great. I'm not only interested in S. rubra here I would like to have a few good Sarra keys on hand especially for a subspecies reference.

Thanks

[BarryRice]

Don Schnell wrote a pretty good paper with a key of all the Sarracenia, per his concept of the genus, based upon pitcher characters. I believe it was:

Schnell, D.E. 1998. A Pitcher Key to the Genus Sarracenia L. (Sarraceniaceae). Castanea. 63 (4): 489-492.

This may be useful for you.

Barry

[ICPS-bob]

BTW, if your library does not have Castanea, individual issues are available from the Southern Appalachian Botanical Society for $5. See

www.sabs.appstate.edu/Castanea/Cast98.htm