| Name | Country (Main) | Phone and Extension-Phone (Main) | Phone and Extension-Fax (Main) | Email (Main) | Research Interests | |
|---|
| Odufuwa, Phebian | United States | 2086004889 | | phebianodufuwa@boisestate.edu | Phylogenomics, biogeography, machine learning, species delimitation, botany, molecular evolution and systematics | View |
| OHBA, HIDEAKI | Japan | | +81-3-5841-8456 | ohba@um.u-tokyo.ac.jp | | View |
| OLMSTEAD, RICHARD G. | United States | 206-618-1008 | | olmstead@u.washington.edu | Systematics of Scutellaria (Lamiaceae); molecular systematics of Boraginales, Lamiales, Solanales & other Asteridae; Angiosperm phylogeny. Neotropical biodiversity. | View |
| Orlandini, Priscila | Brazil | (+55)1934476737 | | priscilaorlandini@gmail.com | Taxonomy, Phyllanthaceae, Euphorbiaceae, Malpighiales | View |
| ORLOVICH, DAVID ALLAN | New Zealand | +64-3-479-9060 | | david.orlovich@otago.ac.nz | Floral biology; molecular phylogenetics; Myrtaceae; Poaceae. | View |
| Ortiz Brunel, Juan Pablo | United States | 7342601863 | | jbrunel@umich.edu | Systematics, Biogeography, Gypsum ecosystems | View |
| Ortiz-Gentry, Rosa | United States | 314-577-5171 | | rosa.ortiz-gentry@mobot.org | Systematics of Menispermaceae. | View |
| Ortiz, Edgardo M. | United States | +1 352 642 2392 | | | Ericaceae, Phylogenetics, Phylogeography, Biogeography | View |
| Oso, Oluwatobi | United States | 2039801497 | | osooluwatobia@gmail.com | Plant Anatomy, Development, Evolution, and Systematics. | View |
| Pacifico, Ricardo | Brazil | 44998634659 | | ricardo_b9@hotmail.com | Melastomataceae. | View |
| PAGANUCCI DE QUEIROZ, LUCIANO | Brazil | +55-7532248021 | +55-7532248033 | luciano.paganucci@gmail.com | Leguminosae systematics & biogeography. | View |
| Paiva, Grazielle | Brazil | | | grazielletainaresende@gmail.com | | View |
| PAK, JAE-HONG | Korea, Republic of | +82-53-950-5352 | +82-53-953-3066 | jhpak@knu.ac.kr | Taxonomy & phylogeny of Lactuceae, Asteraceae. | View |
| PARIS, CATHERINE A. | United States | 802-656-2930 | 802-656-0440 | cparis@uvm.edu | Systematics & evolution of ferns & other vascular plants; plant geography. | View |
| PATTERSON, ROBERT W. | United States | 415-699-6599 | | patters47@gmail.com | Systematics of Polemoniaceae, Hydrophyllaceae, and Namaceae; California floristics. | View |
| PATTERSON, THOMAS | United States | (512) 669-8698 | | thfpatterson@gmail.com | Pinaceae; Eupatorieae; flora of South Texas. | View |
| Pell, Susan | United States | 2025588058 | | susankpell@gmail.com | Systematics of Anacardiaceae and Sapindales, informal botanical education | View |
| PELSER, PIETER B. | New Zealand | +64-(3)-3695228 | | pieter.pelser@canterbury.ac.nz | | View |
| PENNEYS, DARIN | United States | 910.962.3046 | | dpenneys@yahoo.com | Phylogenetics of the Melastomataceae. SE USA flora. Philippines flora. | View |
| Pérez Zabala, Jorge Andrés | Colombia | 6044309348 | | japzmedel@gmail.com | Neotropical floristics; Rosaceae; Prunus; Rutaceae; Biogeography; Plant Ecology. | View |
| Pesant, Simon | Canada | | | simon.pesant.2@umontreal.ca | Taxonomy, Floristics, Wetlands, Endemism | View |
| PETERSON, PAUL M. | United States | 202-633-0975 | | peterson@si.edu | Poaceae | View |
| Phelan, Nicole | United States | | | nicole.phelan@uvm.edu | | View |
| Piniely, Luciana | United States | 7735160959 | | lucianapiniely2026@u.northwestern.edu | Plant taxonomy, genomics, genetics and evolution | View |
| Pinto, Esteban | United States | 7062892503 | | estebanpinto1284@gmail.com | Plant systematics, plant ecology, plant phylogenies, forest and carbon dynamics | View |
| Piovesani, Willian | Brazil | +5551986394371 | | willianpiovesani@hotmail.com | Angiosperms, Taxonomy | View |
| Pipkin, Peri Lee | United States | 9148863679 | | peri.lee@gmail.com | Floristics, Rare plants, Plant conservation, Alpine botany, Desert botany, Global change ecology, Edaphic endemism | View |
| Plume, Olofron | | | | op32@cornell.edu | plant systematics, evolution of polyploidy and chemistry in plants | View |
| PLUNKETT, GREGORY M. | United States | 718-817-8179 | | gplunkett@nybg.org | Taxonomy and molecular systematics of Apiaceae; Araliaceae; Pittosporaceae; Pacific floristics and biogeography. | View |
| POTTER, DANIEL | United States | 530-754-6141 | | dpotter@ucdavis.edu | | View |
| POWELL, A. MICHAEL | United States | 432-837-8366 | | ampowell@sulross.edu | Systematics; flora of northern Chihuahuan Desert region. | View |
| POZNER, RAUL | Argentina | +54-11-4743-4800 | | rpozner@darwin.edu.ar | Systematics & taxonomy of Cucurbitaceae & Calyceraceae. | View |
| PRANCE, SIR GHILLEAN T. | United Kingdom | +44-1297-444-991 | | siriain01@yahoo.co.uk | Chrysobalanaceae; Lecythidaceae; Amazonian flora, Proteaceae; Rhizophoraceae. | View |
| PRATHER, ALAN | United States | 517-355-4695 | | alan@msu.edu | Systematics of Polemoniaceae; Lamiaceae; Phlox, Monarda; polyploidy | View |
| PRICE, MICHELLE J. | Switzerland | +41-0-22-418-5148 | +41-0-22-418-5101 | michelle.price@ville-ge.ch | Mosses; moss systematics; Dicranaceae. | View |
| PRICE, ROBERT A. | United States | 916-662-5917 | | robert.price@cdfa.ca.gov | Systematics of Brassicaceae; evolution of conifers. | View |
| PRYER, KATHLEEN M. | United States | 919-660-7380 | 919-660-7380 | pryer@duke.edu | Phylogenetics of early land plants, especially ferns & horsetails; Marsileaceae; Salviniaceae; morphology, molecules, fossil evidence. | View |
| Quinellato Dantas, Pedro | Brazil | +55 19 996263424 | | pedroqdantas@gmail.com | Plant Systematics, Phylogenetics, Plant taxonomy, Floristics, Floral Biology, Pollination Ecology, Nomenclature | View |
| Radtke, Tyler | | | | t.radtke@ufl.edu | | View |
| Ramm, Zacc | United States | 2516561033 | | ztr1921@jagmail.southalabama.edu | | View |
| Rana, Santosh | United States | 8143084069 | | sranamagar@astate.edu | Biodiversity, Bioinformatics, Climate adaptation, Molecular taxonomy, Plant Systematics, Population genetics | View |
| RANKER, TOM A. | United States | 808-489-2832 | | tom.ranker@gmail.com | Systematics, Island Biogeography and Biodiversity, Floristics, Ferns & Lycophytes | View |
| RASMUSSEN, FINN NYGAARD | Denmark | +45-22 61 10 62 | | fnr@mail.dk | Orchidaceae, Monocot systematics, Mycorrhiza, Amber fossils | View |
| RAVEN, PETER H. | United States | 314-577-9577 | 314-577-9596 | peter.raven@mobot.org | Plant geography; Onagraceae. | View |
| Raynor, Seth | United States | | | seth.raynor@colorado.edu | Lichens, Plants, Taxonomy, Biogeography, Natural History | View |
| Redonda-Martinez, Rosario | Mexico | 52 434 117 95 22 | | | Taxonomy, Micromorphology, Systematics, Asteraceae | View |
| Reinoso, Camille | | | | camillereinoso2025@u.northwestern.edu | | View |
| REZNICEK, ANTON (TONY) A. | United States | 734-764-5544; 734-996-0692 | | reznicek@umich.edu | Systematics of Cyperaceae; Floristics, Biogeography, and Botanical History of the Great Lakes Region | View |
| RIGGINS, CHANCE W. | United States | 217-300-0563 | | cwriggin@illinois.edu | Artemisia (Asteraceae); Amaranthus (Amaranthaceae); Acacia (Fabaceae); Crop Evolution; Crop Wild Relatives; Phytochemistry | View |
| RIGGINS, RHONDA | United States | 805-544-6595 | | rhorigg@charter.net | Lupinus (Fabaceae). | View |
