USA (by States)
All - AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY
Presentation - State - City - Site's
Name - content - various informations.
Content's abbreviations - Garden : Alp = alpine,
Arb = Arboretum, Bot = botany, Clas = classical,
Hist = historical, Jap = japanese, chinese,
Méd = mediterranean, Médic = medicinal,
Nat = native flora, Orch = with Orchids, Org =
Organization, Society, PNat = natural park, National Park,
Priv = private, Pro = protection, Tro = tropical
and sub-tropical's flora