| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| RHNUR | Rhododendron nudiflorum (L.) Torr. var. roseum (Loisel.) Wieg. | Rhododendron prinophyllum | Ericaceae
|
| RHNU3 | Rhododendron nudiflorum (L.) Torr. | Rhododendron periclymenoides | Ericaceae
|
| RHOB | Rhododendron oblongifolium (Small) Millais | Texas azalea | Ericaceae
|
| RHOCO | Rhododendron occidentale (Torr. & Gray ex Torr.) Gray var. occidentale | western azalea | Ericaceae
|
| RHOCP | Rhododendron occidentale (Torr. & Gray ex Torr.) Gray var. paludosum Jepson | western azalea | Ericaceae
|
| RHOCS | Rhododendron occidentale (Torr. & Gray ex Torr.) Gray var. sonomense (Greene) Rehd. | Sonoma azalea | Ericaceae
|
| RHOC | Rhododendron occidentale (Torr. & Gray ex Torr.) Gray | western azalea | Ericaceae
|
| RHPE3 | Rhododendron �pennsylvanicum Rehd. | | Ericaceae
|
| RHPEE | Rhododendron periclymenoides (Michx.) Shinners var. eglandulosum Seymour | Rhododendron periclymenoides | Ericaceae
|
| RHPE4 | Rhododendron periclymenoides (Michx.) Shinners | pink azalea | Ericaceae
|
| RHPR | Rhododendron prinophyllum (Small) Millais | early azalea | Ericaceae
|
| RHPR2 | Rhododendron prunifolium (Small) Millais | plumleaf azalea | Ericaceae
|
| RHRO4 | Rhododendron roseum (Loisel.) Rehd. | Rhododendron prinophyllum | Ericaceae
|
| RHSE | Rhododendron serrulatum (Small) Millais | Rhododendron viscosum | Ericaceae
|
| RHSP4 | Rhododendron speciosum (Willd.) Sweet | Rhododendron flammeum | Ericaceae
|
| RHTOS2 | Rhododendron tomentosum (Stokes) Harmaja ssp. subarcticum (Harmaja) G. Wallace | Ledum palustre ssp. decumbens | Ericaceae
|
| RHUN2 | Rhododendron uniflorum Hutch. & Kingdon-Ward | | Ericaceae
|
| RHVA | Rhododendron vaseyi Gray | pinkshell azalea | Ericaceae
|
| RHVIA | Rhododendron viscosum (L.) Torr. var. aemulans Rehd. | Rhododendron viscosum | Ericaceae
|
| RHVIG | Rhododendron viscosum (L.) Torr. var. glaucum (Michx.) Gray | Rhododendron viscosum | Ericaceae
|
| RHVIM | Rhododendron viscosum (L.) Torr. var. montanum Rehd. | Rhododendron viscosum | Ericaceae
|
| RHVIN | Rhododendron viscosum (L.) Torr. var. nitidum (Pursh) Gray | Rhododendron viscosum | Ericaceae
|
| RHVIS | Rhododendron viscosum (L.) Torr. var. serrulatum (Small) Ahles | Rhododendron viscosum | Ericaceae
|
| RHVIT | Rhododendron viscosum (L.) Torr. var. tomentosum Rehd. | Rhododendron viscosum | Ericaceae
|
| RHVI2 | Rhododendron viscosum (L.) Torr. | swamp azalea | Ericaceae
|
| RHWE | Rhododendron �welleslyanum Waterer ex Rehd. | | Ericaceae
|
| RHODO | Rhododendron L. | rhododendron | Ericaceae
|
| RHAN5 | Rhododon angulatus (Tharp) B.L. Turner | angled sandming | Lamiaceae
|
| RHCI4 | Rhododon ciliatus (Benth.) Epling | Texas sandmint | Lamiaceae
|
| RHODO4 | Rhododon Epling | sandmint | Lamiaceae
|
| RHTO | Rhodomyrtus tomentosus (Ait.) Hassk. | rose myrtle | Myrtaceae
|
| RHODO2 | Rhodomyrtus (DC.) Reichenb. | rhodomyrtus | Myrtaceae
|
| RHCA17 | Rhodora canadensis L. | Rhododendron canadense | Ericaceae
|
| RHSC3 | Rhodotypos scandens (Thunb.) Makino | jetbead | Rosaceae
|
| RHTE5 | Rhodotypos tetrapetalus (Sieb.) Makino | Rhodotypos scandens | Rosaceae
|
| RHODO3 | Rhodotypos Sieb. & Zucc. | rhodotypos | Rosaceae
|
| RHDI5 | Rhoeo discolor (L'H�r.) Hance ex Walp. | Tradescantia spathacea | Commelinaceae
|
| RHSP2 | Rhoeo spathacea (Sw.) Stearn | Tradescantia spathacea | Commelinaceae
|
| RHAL7 | Rhombolytrum albescens (Vasey) Nash | Tridens albescens | Poaceae
|
| RHAC | Rhus acutiloba Turcz. | Toxicodendron pubescens | Anacardiaceae
|
| RHAR5 | Rhus arenaria (Greene) G.N. Jones | Rhus aromatica var. arenaria | Anacardiaceae
|
| RHARF2 | Rhus aromatica Ait. ssp. flabelliformis (Shinners) R.E. Brooks | Rhus trilobata var. trilobata | Anacardiaceae
|
| RHARP2 | Rhus aromatica Ait. ssp. pilosissima (Engelm.) W.A. Weber | Rhus trilobata var. pilosissima | Anacardiaceae
|
| RHARS2 | Rhus aromatica Ait. ssp. serotina (Greene) R.E. Brooks | Rhus aromatica var. serotina | Anacardiaceae
|
| RHART | Rhus aromatica Ait. ssp. trilobata (Nutt.) W.A. Weber | Rhus trilobata var. trilobata | Anacardiaceae
|
| RHARA | Rhus aromatica Ait. var. arenaria (Greene) Fern. | fragrant sumac | Anacardiaceae
|
| RHARA2 | Rhus aromatica Ait. var. aromatica | fragrant sumac | Anacardiaceae
|
| RHARF | Rhus aromatica Ait. var. flabelliformis Shinners | Rhus trilobata var. trilobata | Anacardiaceae
|
| RHARI | Rhus aromatica Ait. var. illinoensis (Greene) Rehd. | Rhus aromatica var. aromatica | Anacardiaceae
|
| RHARM | Rhus aromatica Ait. var. mollis Ashe | Rhus trilobata var. pilosissima | Anacardiaceae
|
| RHARP | Rhus aromatica Ait. var. pilosissima (Engelm.) Shinners | Rhus trilobata var. pilosissima | Anacardiaceae
|
| RHARS | Rhus aromatica Ait. var. serotina (Greene) Rehd. | fragrant sumac | Anacardiaceae
|
| RHARS3 | Rhus aromatica Ait. var. simplicifolia (Greene) Cronq. | Rhus trilobata var. simplicifolia | Anacardiaceae
|
| RHART2 | Rhus aromatica Ait. var. trilobata (Nutt.) Gray ex. S. Wats. | Rhus trilobata var. trilobata | Anacardiaceae
|
| RHAR4 | Rhus aromatica Ait. | fragrant sumac | Anacardiaceae
|
| RHAS | Rhus �ashei (Small) Greene (pro sp.) | | Anacardiaceae
|
| RHBO | Rhus borealis Greene | Rhus glabra | Anacardiaceae
|
| RHCA15 | Rhus calophylla Greene | Rhus glabra | Anacardiaceae
|
| RHCHS2 | Rhus chinensis P. Mill. var. sandwicensis (Gray) O. Deg. & Greenw. | Rhus sandwicensis | Anacardiaceae
|
| RHCH9 | Rhus chinensis Miller | Chinese sumac | Anacardiaceae
|
| RHCH | Rhus choriophylla Woot. & Standl. | Rhus virens var. choriophylla | Anacardiaceae
|
| RHCOC | Rhus copallinum L. var. copallinum | flameleaf sumac | Anacardiaceae
|
| RHCOL3 | Rhus copallinum L. var. lanceolata Gray | Rhus lanceolata | Anacardiaceae
|
| RHCOL2 | Rhus copallinum L. var. latifolia Engl. | winged sumac | Anacardiaceae
|
| RHCOL | Rhus copallinum L. var. leucantha (Jacq.) DC. | winged sumac | Anacardiaceae
|
| RHCO | Rhus copallinum L. | flameleaf sumac | Anacardiaceae
|
| RHCO14 | Rhus coriaria L. | Sicilian sumac | Anacardiaceae
|
| RHCO8 | Rhus cotinus L. | Cotinus coggygria | Anacardiaceae
|
| RHDI6 | Rhus diversiloba Torr. & Gray | Toxicodendron diversilobum | Anacardiaceae
|
| RHGLB | Rhus glabra L. var. borealis Britt., non Rhus borealis Greene | Rhus pulvinata | Anacardiaceae
|
| RHGLL2 | Rhus glabra L. var. laciniata Carr. | Rhus glabra | Anacardiaceae
|
| RHGLO | Rhus glabra L. var. occidentalis Torr. | Rhus glabra | Anacardiaceae
|
| RHGL | Rhus glabra L. | smooth sumac | Anacardiaceae
|
| RHHI2 | Rhus hirta (L.) Sudworth | staghorn sumac | Anacardiaceae
|
| RHIN2 | Rhus integrifolia (Nutt.) Benth. & Hook. f. ex Brewer & S. Wats. | lemonade sumac | Anacardiaceae
|
| RHKE | Rhus kearneyi Barkl. | Kearney's sumac | Anacardiaceae
|
| RHLA3 | Rhus lanceolata (Gray) Britt. | prairie sumac | Anacardiaceae
|
| RHLA4 | Rhus laurina Nutt. | Malosma laurina | Anacardiaceae
|
| RHLE3 | Rhus leucantha Jacq. | Rhus copallinum var. leucantha | Anacardiaceae
|
| RHMI11 | Rhus michauxii Sarg. | false poison sumac | Anacardiaceae
|
| RHMI3 | Rhus microphylla Engelm. ex Gray | littleleaf sumac | Anacardiaceae
|
| RHOB4 | Rhus obtusifolia (Small) Small | Rhus copallinum var. leucantha | Anacardiaceae
|
| RHOVT | Rhus ovata S. Wats. var. traskiae Barkl. p.p. | Rhus ovata | Anacardiaceae
|
| RHOV | Rhus ovata S. Wats. | sugar sumac | Anacardiaceae
|
| RHPU2 | Rhus �pulvinata Greene (pro sp.) | | Anacardiaceae
|
| RHRAL | Rhus radicans L. var. littoralis (Mearns) Deam | Toxicodendron radicans ssp. radicans | Anacardiaceae
|
| RHRAM2 | Rhus radicans L. var. malacotrichocarpa (A.H. Moore) Fern. | Toxicodendron radicans ssp. radicans | Anacardiaceae
|
| RHRAR | Rhus radicans L. var. rydbergii (Small ex Rydb.) Rehd. | Toxicodendron rydbergii | Anacardiaceae
|
| RHRAV | Rhus radicans L. var. vulgaris (Michx.) DC. | Toxicodendron rydbergii | Anacardiaceae
|
| RHRA6 | Rhus radicans L. | Toxicodendron radicans ssp. radicans | Anacardiaceae
|
| RHSA2 | Rhus sandwicensis Gray | neneleau | Anacardiaceae
|
| RHSU7 | Rhus succedanea L. | Toxicodendron succedaneum | Anacardiaceae
|
| RHTO7 | Rhus toxicarium Salisb. | Toxicodendron pubescens | Anacardiaceae
|
| RHTOE | Rhus toxicodendron L. var. eximia (Greene) McNair | Toxicodendron radicans ssp. eximium | Anacardiaceae
|
| RHTOV2 | Rhus toxicodendron L. var. vulgaris Michx. | Toxicodendron rydbergii | Anacardiaceae
|
| RHTO8 | Rhus toxicodendron L. | Toxicodendron pubescens | Anacardiaceae
|
| RHTRA | Rhus trilobata Nutt. var. anisophylla (Greene) Jepson | skunkbush sumac | Anacardiaceae
|
| RHTRA2 | Rhus trilobata Nutt. var. arenaria (Greene) Barkl. | Rhus aromatica var. arenaria | Anacardiaceae
|
| RHTRM | Rhus trilobata Nutt. var. malacophylla (Greene) Munz | Rhus trilobata var. pilosissima | Anacardiaceae
|
| RHTRP | Rhus trilobata Nutt. var. pilosissima Engelm. | pubescent skunkbush sumac | Anacardiaceae
|
| RHTRQ | Rhus trilobata Nutt. var. quinata (Greene) Jepson | skunkbush sumac | Anacardiaceae
|