| Name | Country (Main) | Phone and Extension-Phone (Main) | Phone and Extension-Fax (Main) | Email (Main) | Research Interests | |
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| TIEHM, ARNOLD | United States | 775-742-9180 | | atiehm@att.net | Great Basin flora; botanical history of the Western United States. | View |
| CUSICK, ALLISON W. | United States | 412-450-8094 | | awcusick20@gmail.com | Cyperaceae, Liliales, Trillium | View |
| WEEKS, ANDREA | United States | | | aweeks3@gmu.edu | Systematics & historical biogeography, esp. Burseraceae. | View |
| BAIN, JOHN F. | Canada | 403-380-1827 | | bain@uleth.ca | Molecular systematics; Packera (Asteraceae). | View |
| BAIRD, GARY I. | United States | 208-496-4606 | | bairdg@byui.edu | The systematics, evolution, & taxonomy of the Asteraceae. | View |
| BALLARD, JR., HARVEY E. | United States | 740-818-7730 | | ballardh@ohio.edu | Systematics and evolution of the Violaceae | View |
| HELLENTHAL, BARBARA J. | United States | 574-631-6684 | | barbara.j.hellenthal.2@nd.edu | | View |
| Martin, David | United States | 772-562-7778 | | cymopterus@icloud.com | (retired) | View |
| BUCK, WILLIAM R. | United States | 845-225-9231 | | bbuck@nybg.org | Systematic bryology. | View |
| GUNN, BEE F. | Australia | | | bee.gunn@gmail.com | Arecaceae; Asparagales; paleobotany; evolution; biogeography. | View |
| STAAHL, BERTIL | Sweden | +46-498-108358 | | bertil.staahl@ebc.uu.se | Theophrastaceae; Andean Symplocaceae; legumes of Ecuador; Flora of Ecuador. | View |
| HOLST, BRUCE K | United States | 941-217-8132 | | bholst@selby.org | Systematics of Bromeliaceae, Myrtaceae; floristics of Belize, Venezuela, Guayana Shield, Florida. | View |
| CRINS, WILLIAM J. | Canada | 705-750-7173 | | bcrins@cogeco.ca | Cyperaceae, Poaceae, systematics, floristics | View |
| WEBER, WILLIAM A. | United States | 303-554-8184 | | bill.weber@colorado.edu | Phytogeography; Colorado Flora; floristics; vascular plants; bryophytes; lichens. | View |
| NELSON, BURRELL E. | United States | 307-766-2236 | | bnelsonn@uwyo.edu | Floristics of the Rocky Mountains | View |
| TORKE, BENJAMIN M. | United States | | | btorke@nybg.org | Systematics of legumes; tropical plant species diversity | View |
| Campbell, Chris | United States | 12073561123 | | campbell@maine.edu | Evolution & systematics of Amelanchier (Rosaceae). | View |
| BELL, CHARLES | United States | 504-280-7040 | | valerianaceae1969@gmail.com | Phylogenetics; Valerianaceae; biogeography; divergence time estimation, Linanthus, Leptosiphon | View |
| DAVIDSON, CHRISTOPHER | United States | 208-336-5196 | | cdavidson@floraoftheworld.org | Systematics & evolution of Piperaceae; www.FloraoftheWorld.org (website). | View |
| DRUMMOND, CHLOE | United States | 917-685-0414 | | chloe.p.drummond@gmail.com | Evolutionary Biology, Disjunct Biogeography, Plant Systematics, Multi-omics | View |
| SKEMA, CYNTHIA | United States | | | cks28@cornell.edu | Systematics of dombeyoids and Malvaceae, floral development & gender expression, flora of Madagascar, flora of Pennsylvania, digitization of herbarium collections | View |
| MORDEN, CLIFFORD W. | United States | 808-956-9636 | | cmorden@hawaii.edu | Evolution of Hawaiian flora | View |
| MABBERLEY, DAVID J. | Australia | +61-2-9231-8112 | | david_mabberley@yahoo.co.uk | Citrus; Clerodendrum; Meliaceae. | View |
| FERGUSON, DAVID K. | Austria | +43-2742-72155 | | david.kay.ferguson@univie.ac.at | Tertiary leaf remains; taxonomy of woody plants with a fossil record; eastern Asiatic botany. | View |
| LEMKE, DAVID E. | United States | 512-245-3364 | | david.lemke@txstate.edu | Flora of Texas; systematic anatomy; fossil woods; biology of aquatic plants. | View |
| BAILEY, C. DONOVAN | United States | 575-646-7012 | | dbailey@nmsu.edu | Systematics of the Brassicaceae & Fabaceae. | View |
| GERNANDT, David | Mexico | +52-555-622-9080 | | dsgernandt@gmail.com | Conifer systematics. | View |
| KEIL, DAVID J. | United States | 8057562043 | | dkeil@calpoly.edu | Systematics of Asteraceae, Pectis, & Cirsium; floristics of California & Arizona. | View |
| MORGAN, DAVID | United States | 678-839-4044 | | dmorgan@westga.edu | Asteraceae; Rosaceae; molecular systematics; vascular plant and bryophyte floristics and ecology | View |
| DORR, LAURENCE J. | United States | 7035324722 | | dorrl@si.edu | Malvaceae; northern Andean flora; biography & botanical bibliography. | View |
| PENNEYS, DARIN | United States | 910.962.3046 | | dpenneys@yahoo.com | Phylogenetics of the Melastomataceae. SE USA flora. Philippines flora. | View |
| WALTERS, DIRK R. | United States | 805-543-7051 | | dwalters@calpoly.edu | Local flora; Schizanthus (Solanaceae). | View |
| Dean, Ellen | United States | 5305744271 | | eadean@omsoft.com | Systematics of Lycianthes; ethnobotany; flora of California. | View |
| HERMSEN, ELIZABETH J. | United States | 607-273-6623 | | ejhermsen@gmail.com | Paleobotany; plant systematics. | View |
| JUDZIEWICZ, EMMET J. | United States | 715-347-7562 | | emmet.judziewicz@uwsp.edu | Flora of the Great Lakes region; Neotropical bamboos, especially Aulonemia | View |
| KNOX, ERIC | United States | 812-855-2549 | | eknox@indiana.edu | Evolution of giant senecios & giant lobelias, employing morphology, DNA, ecology, biogeography; Asteraceae; Lobeliaceae. | View |
| NORMAN, ELIANE M. | United States | 407-279-8699 | | elianen@aol.com | Buddleja and related genera; Asimina & Deeringothamnus (Annonaceae); reproductive biology of Florida plants; travels of Andre Michaux. | View |
| Elisens, Wayne | United States | 4054134813 | | elisens@ou.edu | Lamiales. | View |
| GARDNER, ELLIOT | United States | 917-902-5064 | | elliot.gardner@case.edu | Systematics of flowering plants, especially the flora of tropical Asia. Revisionary systematics and pollination biology of Moraceae. Phylogenomics. Chemical ecology and floral volatile chemistry. | View |
| ERBAR, CLAUDIA | Germany | +49-06221-475990 | | claudia.erbar@alumni.uni-heidelberg.de | Origin & early evolution of angiosperms; origin & early evolution of monocots; relationships in Asteridae s.l.; formation of corolla tubes; flower development; flower ecology; secondary pollen presentation in Asteridae s.l. | View |
| ERTTER, BARBARA | United States | | | ertter@berkeley.edu | Floristics & botanical history of western United States; taxonomy of Potentilleae (Rosaceae). | View |
| SCHILLING, EDWARD E. | United States | 865-974-3065 | | eschilling@utk.edu | Asteraceae, subtribe Helianthinae, tribes Cichorieae and Eupatorieae; Trillium; rare plants of southeastern U.S.A. | View |
| EVANS, TIMOTHY M. | United States | 616-331-8704 | | evanstim@gvsu.edu | Systematics of Commelinaceae and Bromeliaceae; molecular systematics. | View |
| ALMEDA, FRANK | United States | 415-379-5359 | | falmeda@calacademy.org | Systematics of Melastomataceae and neotropical Symplocaceae | View |
| BARRIE, FRED R. | United States | 312-665-7848 | | fbarrie@fieldmuseum.org | Valerianaceae; Myrtaceae; nomenclature. | View |
| Folk, Ryan | United States | 3308013078 | | rfolk@biology.msstate.edu | Heuchera: systematics, molecular phylogenetics, hybridization, species delimitation; niche evolution in the Saxifragales | View |
| FREUND, FORREST | United States | 415-497-9687 | | forrest.freund@alumni.cgu.edu | Isoetes - Phylogenetics/Phylogeography, Population genetics, anatomy/morphology, taxonomy | View |
| FREUDENSTEIN, JOHN V. | United States | 614-688-0363 | | freudenstein.1@osu.edu | Systematics of Orchidaceae, Ericaceae; species circumscription, genome evolution, ontogeny | View |
| ALLEN, GERALDINE A. | Canada | 250-721-7110 | | gallen@uvic.ca | Phylogeny and phylogenomics (esp. Asteraceae); phylogeography; plant sex expression; conservation genetics and rare species | View |
| Gandhi, Kanchi | United States | 6174951939 | | gandhi@oeb.harvard.edu | Nomenclature; systematics of Poaceae, Cyperaceae, Asteraceae; Flora of North America; Flora of India. | View |