| Lateinischer name | Allgemeiner name | Familie | ||
| Isocoma veneta (Kunth) Greene var. furfuracea (Greene) Beauchamp | >>Isocoma menziesii var. decumbens |
Asteraceae |
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| Isocoma veneta (Kunth) Greene var. oxyphylla (Greene) Beauchamp | >>Isocoma menziesii var. menziesii |
Asteraceae |
||
| Isocoma veneta (Kunth) Greene var. sedoides (Greene) Jepson | >>Isocoma menziesii var. sedoides |
Asteraceae |
||
| Isocoma veneta (Kunth) Greene var. vernonioides (Nutt.) Jepson | >>Isocoma menziesii var. vernonioides |
Asteraceae |
||
| Isocoma veneta (Kunth) Greene [excluded] | Asteraceae |
|||
| Isocoma vernonioides Nutt. | >>Isocoma menziesii var. vernonioides |
Asteraceae |
||
| Isocoma wrightii (Gray) Rydb. | >>Isocoma pluriflora |
Asteraceae |
||
| Isodendrion forbesii St. John | >>Isodendrion laurifolium |
Violaceae |
||
| Isodendrion Gray | isodendrion |
Violaceae |
||
| Isodendrion hawaiiense St. John | >>Isodendrion pyrifolium |
Violaceae |
||
| Isodendrion hillebrandii St. John | >>Isodendrion pyrifolium |
Violaceae |
||
| Isodendrion hosakae St. John | cindercone isodendrion |
Violaceae |
||
| Isodendrion lanaiense St. John | >>Isodendrion pyrifolium |
Violaceae |
||
| Isodendrion laurifolium Gray | rockcliff isodendrion |
Violaceae |
||
| Isodendrion longifolium Gray | longleaf isodendrion |
Violaceae |
||
| Isodendrion lydgatei St. John | >>Isodendrion laurifolium |
Violaceae |
||
| Isodendrion maculatum St. John | >>Isodendrion longifolium |
Violaceae |
||
| Isodendrion molokaiense St. John | >>Isodendrion pyrifolium |
Violaceae |
||
| Isodendrion pyrifolium Gray | wahine noho kula |
Violaceae |
||
| Isodendrion remyi St. John | >>Isodendrion pyrifolium |
Violaceae |
||
| Isodendrion subsessilifolium Heller | >>Isodendrion laurifolium |
Violaceae |
||
| Isodendrion waianaeense St. John | >>Isodendrion laurifolium |
Violaceae |
||
| Isolepis carinata Hook. & Arn. ex Torr. | keeled bulrush |
Cyperaceae |
||
| Isolepis cernua (Vahl) Roemer & J.A. Schultes | low bulrush |
Cyperaceae |
||
| Isolepis fluitans (L.) R. Br. | Cyperaceae |
|||
| Isolepis funckii Steud. | >>Bulbostylis funckii |
Cyperaceae |
||
| Isolepis hystrix (Thunb.) Nees | bottlebrush bulrush |
Cyperaceae |
||
| Isolepis junciformis Kunth | >>Bulbostylis junciformis |
Cyperaceae |
||
| Isolepis koilolepis Steud. | >>Isolepis carinata |
Cyperaceae |
||
| Isolepis molesta (M.C. Johnston) S.G. Sm. | Gulf Coast bulrush |
Cyperaceae |
||
| Isolepis prolifera R. Br. | proliferating bulrush |
Cyperaceae |
||
| Isolepis R. Br. | bulrush |
Cyperaceae |
||
| Isolepis setacea (L.) R. Br. | bristleleaf bulrush |
Cyperaceae |
||
| Isolepis vestita Kunth | >>Bulbostylis vestita |
Cyperaceae |
||
| Isolepis warei Torr. | >>Bulbostylis warei |
Cyperaceae |
||
| Isopappus divaricatus (Nutt.) Torr. & Gray | >>Croptilon divaricatum |
Asteraceae |
||
| Isopappus hookerianus Torr. & Gray | >>Croptilon hookerianum var. hookerianum |
Asteraceae |
||
| Isopappus validus Rydb. | >>Croptilon hookerianum var. validum |
Asteraceae |
||
| Isopogon buxifolius R. Br. | Proteaceae |
|||
| Isopogon cuneatus R. Br. | Proteaceae |
|||
| Isopogon dubius (R. Br.) Druce | rose-coneflower |
Proteaceae |
||
| Isopogon formosus R. Br. | Proteaceae |
|||
| Isopogon R. Br. ex Knight | cone flower |
Proteaceae |
||
| Isopogon teretifolius R. Br. | nodding coneflower |
Proteaceae |
||
| Isopyrum biternatum (Raf.) Torr. & Gray | >>Enemion biternatum |
Ranunculaceae |
||
| Isopyrum hallii Gray | >>Enemion hallii |
Ranunculaceae |
||
| Isopyrum occidentale Hook. & Arn. | >>Enemion occidentale |
Ranunculaceae |
||
| Isopyrum stipitatum Gray | >>Enemion stipitatum |
Ranunculaceae |
||
| Isotoma longiflora (L.) K. Presl | >>Hippobroma longiflora |
Campanulaceae |
||
| Isotrema californica (Torr.) Huber | >>Aristolochia californica |
Aristolochiaceae |
||
| Isotrema macrophyllum (Lam.) C.F. Reed | >>Aristolochia macrophylla |
Aristolochiaceae |
||
| Isotrema tomentosa (Sims) Huber | >>Aristolochia tomentosa |
Aristolochiaceae |
||
| Isotria medeoloides (Pursh) Raf. | small whorled pogonia |
Orchidaceae |
||
| Isotria Raf. | fiveleaf orchid |
Orchidaceae |
||
| Isotria verticillata Raf. | large whorled pogonia |
Orchidaceae |
||
| Itea L. | sweetspire |
Grossulariaceae |
||
| Itea virginica L. | Virginia sweetspire |
Grossulariaceae |
||
| Iva acerosa (Nutt.) R.C. Jackson | >>Oxytenia acerosa |
Asteraceae |
||
| Iva ambrosiifolia (Gray) Gray | >>Hedosyne ambrosiifolia |
Asteraceae |
||
| Iva ambrosiifolia (Gray) Gray ssp. lobata (Rydb.) R.C. Jackson [excluded] | Asteraceae |
|||
| Iva angustifolia Nutt. ex DC. | narrowleaf marshelder |
Asteraceae |
||
| Iva angustifolia Nutt. ex DC. var. latior Shinners | >>Iva texensis |
Asteraceae |
||
| Iva annua L. | annual marshelder |
Asteraceae |
||
| Iva annua L. var. ?macrocarpa (Blake) R.C. Jackson | annual marshelder |
Asteraceae |
||
| Iva annua L. var. annua | annual marshelder |
Asteraceae |
||
| Iva annua L. var. caudata (Small) R.C. Jackson | annual marshelder |
Asteraceae |
||
| Iva asperifolia Less. | Pensacola marshelder |
Asteraceae |
||
| Iva axillaris Pursh | povertyweed |
Asteraceae |
||
| Iva axillaris Pursh ssp. robustior (Hook.) Bassett | >>Iva axillaris |
Asteraceae |
||
| Iva axillaris Pursh var. robustior Hook. | >>Iva axillaris |
Asteraceae |
||
| Iva caudata Small | >>Iva annua var. caudata |
Asteraceae |
||
| Iva cheiranthifolia Kunth | fly marshelder |
Asteraceae |
||
| Iva ciliata Willd. | >>Iva annua var. annua |
Asteraceae |
||
| Iva ciliata Willd. var. macrocarpa Blake | >>Iva annua var. ?macrocarpa |
Asteraceae |
||
| Iva dealbata Gray | >>Leuciva dealbata |
Asteraceae |