Would someone please recommend a few good plant ID guides and floras for use in the region around Roanoke, VA and Charleston, WV? Will be using them to ID plants for hydrophytic vegetation determinations in USACE wetland delineations.

I have reviewed the attached reference listing (Appendix F) from the USACE, but would like to know which are more/less useful before purchasing a few of them. In particular, it would be helpful to find at least one that facilitates plant ID without them being in flower.

Any pointers to local guides put out by universities or local authorities/native plant societies would also be appreciated!

Thank You in advance!