| Contains | Sphaerostigma acuminatum Phil. Sphaerostigma alyssoides (Hook. & Arn.) Walp. Sphaerostigma andinum (Nutt.) Walp. Sphaerostigma angelorum (S.Watson) A.Nelson Sphaerostigma arenicolum (Small) A.Nelson Sphaerostigma bistorta (Nutt.) Walp. Sphaerostigma boothii (Douglas) Walp. Sphaerostigma campestre (Greene) Small Sphaerostigma chamaenerioides (A.Gray) Small Sphaerostigma chamissonis Fisch. & C.A.Mey. Sphaerostigma cheiranthifolium (Hornem. ex Spreng.) Fisch. & C.A.Mey. Sphaerostigma contortum Walpers Sphaerostigma decorticans (Hook. & Arn.) Small Sphaerostigma dentatum (Cav.) Walp. Sphaerostigma deserti (M.E.Jones) A.Heller Sphaerostigma divaricatum Gay Sphaerostigma epilobioides (Nutt.) Walp. Sphaerostigma erythrum Davidson Sphaerostigma filiforme A.Nelson Sphaerostigma flexuosum (A.Nelson) Rydb. Sphaerostigma gauriflorum (Torr. & A.Gray) Walp. Sphaerostigma hallii Davidson Sphaerostigma heterophylla (Spach) Gay Sphaerostigma hilgardii (Greene) Small Sphaerostigma hirtellum (Greene) Small Sphaerostigma hirtum Fisch. & C.A.Mey. Sphaerostigma hitchcockii A.Nelson Sphaerostigma implexum A.Nelson Sphaerostigma lemmonii A.Nelson Sphaerostigma macrophyllum (Small) Rydb. Sphaerostigma micranthum (Hornem. ex Spreng.) Walp. Sphaerostigma minimum Heynh. Sphaerostigma minor A. Nelson Sphaerostigma minus A.Nelson Sphaerostigma nelsonii A.Heller Sphaerostigma nevadense (Kellogg) A.Heller Sphaerostigma nitidum (Greene) Small Sphaerostigma orthocarpum A.Nelson & P.B.Kenn. Sphaerostigma pallidum Abrams Sphaerostigma paradoxum (Spach) Gay Sphaerostigma parvulum (Nutt. ex Torr. & A.Gray) Walp. Sphaerostigma pterospermum (S.Watson) A.Nelson Sphaerostigma pubens (S.Watson) Rydb. Sphaerostigma ramosissimum Phil. Sphaerostigma refractum (S.Watson) Small Sphaerostigma rutilum (Davidson) A.Nelson Sphaerostigma senex A.Nelson Sphaerostigma sp. Sphaerostigma spirale Fisch. & C.A.Mey. Sphaerostigma strigulosum Fisch. & C.A.Mey. Sphaerostigma tenuifolium (Spach) Gay Sphaerostigma tortum A. Nelson Sphaerostigma tortuosum A.Nelson Sphaerostigma utahense Small Sphaerostigma veitchianum Small Sphaerostigma viridescens (Hook.) Walp. |
