| Sisyrinchium albidum Raf. |
Accepted |
16 |
| Sisyrinchium angustifolium Mill. |
Accepted |
48 |
| Sisyrinchium arenarium Poepp. |
Accepted |
9 |
| Sisyrinchium arizonicum Rothr. |
Accepted |
18 |
| Sisyrinchium atlanticum E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium azureum Phil. |
Accepted |
8 |
| Sisyrinchium bellum S. Watson |
Accepted |
16 |
| Sisyrinchium bermudiana L. |
Accepted |
44 |
| Sisyrinchium biforme E. P. Bicknell |
Accepted |
48 |
| Sisyrinchium californicum (K. Gawl.) Dryand. |
Accepted |
17 |
| Sisyrinchium campestre E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium chilense Hook. |
Accepted |
8 |
| Sisyrinchium commutatum Klatt |
Accepted |
9 |
| Sisyrinchium convolutum Nocca |
Accepted |
18 |
| Sisyrinchium coulterianum Klatt ex Baker |
Accepted |
18 |
| Sisyrinchium cuspidatum Poepp. |
Accepted |
9 |
| Sisyrinchium demissum Greene |
Accepted |
16 |
| Sisyrinchium dichotomum E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium elmeri Greene |
Accepted |
17 |
| Sisyrinchium ensigerum E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium fiebrigii I. M. Johnst. |
Accepted |
27 |
| Sisyrinchium funereum E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium fuscatum E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium graminifolium Lindl. |
Accepted |
9 |
| Sisyrinchium groenlandicum Böcher |
Accepted |
16 |
| Sisyrinchium halophilum Greene |
Accepted |
16 |
| Sisyrinchium hitchcockii D. M. Hend. |
Accepted |
32 |
| Sisyrinchium hoehnei I. M. Johnst. |
Accepted |
9 |
| Sisyrinchium idahoense E. P. Bicknell |
Accepted |
48 |
| Sisyrinchium idahoense var. macounii (E. P. Bicknell) D. M. Hend. |
Accepted |
32 |
| Sisyrinchium idahoense var. occidentale (E. P. Bicknell) D. M. Hend. |
Accepted |
32 |
| Sisyrinchium idahoense var. segetum (E. P. Bicknell) D. M. Hend. |
Accepted |
32 |
| Sisyrinchium langloisii Greene |
Accepted |
16 |
| Sisyrinchium littorale Greene |
Accepted |
48 |
| Sisyrinchium longipes (E. P. Bicknell) Kearney & Peebles |
Accepted |
17 |
| Sisyrinchium macrocarpum Hieron. |
Accepted |
9 |
| Sisyrinchium mandonii Baker |
Accepted |
54 |
| Sisyrinchium megapotamicum Malme |
Accepted |
16 |
| Sisyrinchium miamiense E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium micranthum Cav. |
Accepted |
24 |
| Sisyrinchium minus Engelm. & A. Gray |
Accepted |
5 |
| Sisyrinchium montanum Greene |
Accepted |
48 |
| Sisyrinchium montanum var. crebrum Fernald |
Accepted |
43 |
| Sisyrinchium mucronatum Michx. |
Accepted |
16 |
| Sisyrinchium nashii E. P. Bicknell |
Accepted |
8 |
| Sisyrinchium ostenianum Beauverd |
Accepted |
9 |
| Sisyrinchium pachyrhizum Baker |
Accepted |
48 |
| Sisyrinchium pallidum Cholewa & D. M. Hend. |
Accepted |
32 |
| Sisyrinchium patagonicum Phil. ex Baker |
Accepted |
32 |
| Sisyrinchium pearcei Phil. |
Accepted |
9 |
| Sisyrinchium platense I. M. Johnst. |
Accepted |
24 |
| Sisyrinchium platycaule Baker |
Accepted |
9 |
| Sisyrinchium pruinosum E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium purpurellum Ravenna |
Accepted |
9 |
| Sisyrinchium quadrangulatum Klatt |
Accepted |
18 |
| Sisyrinchium radicatum E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium rosulatum E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium sagittiferum E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium sarmentosum Suksd. ex Greene |
Accepted |
48 |
| Sisyrinchium scabrum Schltdl. & Cham. |
Accepted |
16 |
| Sisyrinchium scariosum I. M. Johnst. |
Accepted |
9 |
| Sisyrinchium sellowianum Klatt |
Accepted |
9 |
| Sisyrinchium septentrionale E. P. Bicknell |
Accepted |
16 |
| Sisyrinchium setaceum Klatt |
Accepted |
9 |
| Sisyrinchium soboliferum Ravenna |
Accepted |
48 |
| Sisyrinchium striatum Sm. |
Accepted |
9 |
| Sisyrinchium tenuifolium Humb. & Bonpl. ex Willd. |
Accepted |
18 |
| Sisyrinchium tinctorium Kunth |
Accepted |
18 |
| Sisyrinchium uliginosum Ravenna |
Accepted |
15 |
| Sisyrinchium xerophyllum Greene |
Accepted |
16 |
| Sisyrinchium laxinervium Ravenna |
Unresolved |
18 |
| Sisyrinchium douglasii A. Dietr. |
Synonym of Olsynium douglasii (A. Dietr.) E. P. Bicknell |
32 |
| Sisyrinchium inflatum (Suksd.) H. S. John |
Synonym of Olsynium douglasii var. inflatum (Suksd.) Cholewa & D. M. Hend. |
32 |
| Sisyrinchium filifolium Gaudich. |
Synonym of Olsynium filifolium (Gaudich.) Goldblatt |
9 |
| Sisyrinchium junceum E. Mey. ex C. Presl |
Synonym of Olsynium junceum (E. Mey.) Goldblatt |
10 |
| Sisyrinchium weberbauerianum Kraenzl. |
Synonym of Olsynium junceum (E. Mey.) Goldblatt |
10 |
| Sisyrinchium depauperatum Phil. |
Synonym of Olsynium junceum subsp. depauperatum (Phil.) R. A. Rodr. & Martic. |
48 |
| Sisyrinchium scirpoideum Poepp. |
Synonym of Olsynium scirpoideum (Poepp.) Goldblatt |
8 |
| Sisyrinchium luridum Ravenna |
Synonym of Olsynium scirpoideum subsp. luridum (Ravenna) R. A. Rodr. & Martic. |
16 |
| Sisyrinchium trinerve Baker |
Synonym of Olsynium trinerve (Baker) R. A. Rodr. & Martic. |
32 |
| Sisyrinchium acre None |
Synonym of Sisyrinchium acre H. Mann |
17 |
| Sisyrinchium humile Phil. |
Synonym of Sisyrinchium arenarium Poepp. |
9 |
| Sisyrinchium brachypus E. P. Bicknell |
Synonym of Sisyrinchium californicum (K. Gawl.) Dryand. |
17 |
| Sisyrinchium campestre Bicknell |
Synonym of Sisyrinchium campestre E. P. Bicknell |
16 |
| Sisyrinchium chilense |
Synonym of Sisyrinchium chilense Hook. |
8 |
| Sisyrinchium arenicola E. P. Bicknell |
Synonym of Sisyrinchium fuscatum E. P. Bicknell |
16 |
| Sisyrinchium groenlandicum Bocher |
Synonym of Sisyrinchium groenlandicum Böcher |
16 |
| Sisyrinchium idahoense var. idahoense |
Synonym of Sisyrinchium idahoense E. P. Bicknell |
48 |
| Sisyrinchium macounii E. P. Bicknell |
Synonym of Sisyrinchium idahoense var. macounii (E. P. Bicknell) D. M. Hend. |
32 |
| Sisyrinchium iridifolium Kunth |
Synonym of Sisyrinchium micranthum Cav. |
24 |
| Sisyrinchium montanum var. montanum |
Synonym of Sisyrinchium montanum Greene |
48 |
| Sisyrinchium montanum subsp. crebrum (Fernald) Böcher |
Synonym of Sisyrinchium montanum var. crebrum Fernald |
43 |
| Sisyrinchium montanum var. crebrum Fern. |
Synonym of Sisyrinchium montanum var. crebrum Fernald |
43 |
| Sisyrinchium intermedium E. P. Bicknell |
Synonym of Sisyrinchium mucronatum Michx. |
16 |
| Sisyrinchium mucronatum Mick. |
Synonym of Sisyrinchium mucronatum Michx. |
16 |
| Sisyrinchium fibrosum E. P. Bicknell |
Synonym of Sisyrinchium nashii E. P. Bicknell |
8 |
| Sisyrinchium pachyrhizum None |
Synonym of Sisyrinchium pachyrhizum Baker |
48 |
| Sisyrinchium nudicaule Phil. |
Synonym of Sisyrinchium patagonicum Phil. ex Baker |
32 |
| Sisyrinchium exile E. P. Bicknell |
Synonym of Sisyrinchium rosulatum E. P. Bicknell |
16 |
| Sisyrinchium tinctorium H. B. K. |
Synonym of Sisyrinchium tinctorium Kunth |
18 |
| Sisyrinchium alatum Hook. |
Synonym of Sisyrinchium vaginatum Spreng. |
18 |