| Lateinischer name | Allgemeiner name | Familie | ||
| Aster saxatilis (Fern.) Blanch. nom. illeg. | >>Symphyotrichum tradescantii |
Asteraceae |
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| Aster saxicastellii J. Campbell & M. Medley | >>Eurybia saxicastellii |
Asteraceae |
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| Aster scaber Thunb. | >>Doellingeria scabra |
Asteraceae |
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| Aster scabricaulis Shinners | >>Symphyotrichum puniceum var. scabricaule |
Asteraceae |
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| Aster schreberi Nees | >>Eurybia schreberi |
Asteraceae |
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| Aster scopulorum Gray | >>Ionactis alpina |
Asteraceae |
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| Aster sedifolius L. | Asteraceae |
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| Aster sedifolius L. ssp. dracunculoides (Lam.) Merxm. | Asteraceae |
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| Aster sericeus Vent. | >>Symphyotrichum sericeum |
Asteraceae |
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| Aster sericeus Vent. var. microphyllus DC. | >>Symphyotrichum pratense |
Asteraceae |
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| Aster sericocarpoides (Small) K. Schum. | >>Doellingeria sericocarpoides |
Asteraceae |
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| Aster serpentimontanus Tamamsch. | >>Aster alpinus var. serpentimontanus |
Asteraceae |
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| Aster shastensis (Gray) Gray | >>Machaeranthera canescens ssp. canescens var. shastensis |
Asteraceae |
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| Aster shastensis (Gray) Gray var. eradiatus Gray | >>Machaeranthera canescens ssp. canescens var. shastensis |
Asteraceae |
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| Aster shastensis (Gray) Gray var. glossophyllus (Piper) Cronq. | >>Machaeranthera canescens ssp. canescens var. canescens |
Asteraceae |
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| Aster shastensis (Gray) Gray var. latifolius Cronq. | >>Machaeranthera canescens ssp. canescens var. canescens |
Asteraceae |
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| Aster shortii Lindl. | >>Symphyotrichum shortii |
Asteraceae |
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| Aster sibiricus L. | >>Eurybia sibirica |
Asteraceae |
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| Aster sibiricus L. ssp. richardsonii (Spreng.) A.& D. Löve | >>Eurybia merita |
Asteraceae |
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| Aster sibiricus L. var. giganteus (Hook.) Gray | >>Eurybia merita |
Asteraceae |
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| Aster sibiricus L. var. meritus (A. Nels.) Raup | >>Eurybia merita |
Asteraceae |
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| Aster simmondsii Small | >>Symphyotrichum simmondsii |
Asteraceae |
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| Aster simplex Willd. | >>Symphyotrichum lanceolatum ssp. lanceolatum var. lanceolatum |
Asteraceae |
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| Aster simplex Willd. var. estuarinus Boivin | >>Symphyotrichum lanceolatum ssp. lanceolatum var. lanceolatum |
Asteraceae |
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| Aster simplex Willd. var. interior (Wieg.) Cronq. | >>Symphyotrichum lanceolatum ssp. lanceolatum var. interior |
Asteraceae |
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| Aster simplex Willd. var. ramosissimus (Torr. & Gray) Cronq. | >>Symphyotrichum lanceolatum ssp. lanceolatum var. lanceolatum |
Asteraceae |
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| Aster simulatus Small | >>Symphyotrichum concolor |
Asteraceae |
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| Aster siskiyouensis A. Nels. & J.F. Macbr. | >>Eucephalus glabratus |
Asteraceae |
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| Aster smallii Alexander | >>Eurybia spectabilis |
Asteraceae |
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| Aster solidagineus Michx. | >>Sericocarpus linifolius |
Asteraceae |
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| Aster sonomensis Greene | >>Symphyotrichum lentum |
Asteraceae |
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| Aster sonorae Gray | >>Machaeranthera riparia |
Asteraceae |
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| Aster spatelliformis Burgess | >>Symphyotrichum lateriflorum var. spatelliforme |
Asteraceae |
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| Aster spathulatus Lindl. | >>Symphyotrichum spathulatum var. spathulatum |
Asteraceae |
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| Aster spectabilis Ait. | >>Eurybia spectabilis |
Asteraceae |
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| Aster spectabilis Ait. var. cinerascens Blake | >>Eurybia spectabilis |
Asteraceae |
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| Aster spectabilis Ait. var. suffultus Fern. | >>Eurybia spectabilis |
Asteraceae |
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| Aster spinosus Benth. | >>Chloracantha spinosa |
Asteraceae |
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| Aster spinulosus Chapman | >>Eurybia spinulosa |
Asteraceae |
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| Aster squamatus (Spreng.) Hieron. | >>Symphyotrichum squamatum |
Asteraceae |
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| Aster squarrosus sensu Walt., non All. | >>Symphyotrichum walteri |
Asteraceae |
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| Aster standleyi A. Davids. | >>Xylorhiza cognata |
Asteraceae |
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| Aster steeleorum Shinners | >>Symphyotrichum laeve var. laeve |
Asteraceae |
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| Aster stenomeres Gray | >>Ionactis stenomeres |
Asteraceae |
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| Aster stilettiformis Burgess | >>Eurybia divaricata |
Asteraceae |
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| Aster stricticaulis (Torr. & Gray) Rydb. | >>Symphyotrichum ericoides var. stricticaule |
Asteraceae |
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| Aster strictus Pursh, non Poir. | >>Eurybia radula |
Asteraceae |
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| Aster subasper Lindl. | >>Symphyotrichum praealtum var. subasperum |
Asteraceae |
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| Aster subgeminatus (Fern.) Boivin | >>Symphyotrichum ciliolatum |
Asteraceae |
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| Aster subgriseus Rydb. | >>Symphyotrichum ascendens |
Asteraceae |
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| Aster subintegerrimus (Trautv.) Ostenf. & Resvoll | >>Eurybia sibirica |
Asteraceae |
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| Aster subsessilis Burgess | >>Symphyotrichum patens var. patentissimum |
Asteraceae |
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| Aster subspicatus Nees | >>Symphyotrichum subspicatum var. subspicatum |
Asteraceae |
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| Aster subspicatus Nees var. apricus (Gray) Boivin | >>Symphyotrichum foliaceum var. apricum |
Asteraceae |
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| Aster subspicatus Nees var. grayi (Suksdorf) Cronq. | >>Symphyotrichum subspicatum var. grayi |
Asteraceae |
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| Aster subulatus Michx. | >>Symphyotrichum subulatum |
Asteraceae |
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| Aster subulatus Michx. var. australis (Gray) Shinners | >>Symphyotrichum squamatum |
Asteraceae |
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| Aster subulatus Michx. var. cubensis (DC.) Shinners | >>Symphyotrichum expansum |
Asteraceae |
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| Aster subulatus Michx. var. elongatus Bosserd. | >>Symphyotrichum bahamense |
Asteraceae |
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| Aster subulatus Michx. var. euroauster Fern. & Grisc. | >>Symphyotrichum subulatum |
Asteraceae |
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| Aster subulatus Michx. var. ligulatus Shinners | >>Symphyotrichum divaricatum |
Asteraceae |
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| Aster subulatus Michx. var. obtusifolius Fern. | >>Symphyotrichum subulatum |
Asteraceae |
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| Aster subulatus Michx. var. sandwicensis (Gray) A.G. Jones | >>Symphyotrichum squamatum |
Asteraceae |
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| Aster sulznerae Small | >>Symphyotrichum simmondsii |
Asteraceae |
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| Aster surculosus Michx. | >>Eurybia surculosa |
Asteraceae |
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| Aster sylvestris Burgess | >>Symphyotrichum undulatum |
Asteraceae |
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| Aster tagetinus (Greene) Blake | >>Machaeranthera tagetina |
Asteraceae |
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| Aster tanacetifolius Kunth | >>Machaeranthera tanacetifolia |
Asteraceae |
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| Aster tardiflorus L. var. vestitus Fern. | >>Symphyotrichum novi-belgii var. villicaule |
Asteraceae |
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| Aster tataricus L. f. | Tatarian aster |
Asteraceae |
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| Aster tenebrosus Burgess | >>Eurybia divaricata |
Asteraceae |
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| Aster tenerrimus Less. | >>Tetramolopium tenerrimum |
Asteraceae |
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| Aster tenuicaulis (C. Mohr) Burgess | >>Symphyotrichum patens var. gracile |
Asteraceae |
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| Aster tenuifolius L. | >>Symphyotrichum tenuifolium |
Asteraceae |
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| Aster tenuifolius L. var. aphyllus R.W. Long | >>Symphyotrichum bracei |
Asteraceae |