| Family | ASTERACEAE |
| Genus species | Tetraneuris acaulis (Pursh) Greene trib. Helenieae |
| Bibliography | Pittonia 3: 265 (1898) |
| Native Range | wc. Canada to wc. & c. USA |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Altitude | 700-3900m |
| Description | taproot, leaves only basal, linear to broadly oblanceolate, capitula solitary, disc 8-20mm, ligules 5-20mm long, wide and showy, rarely absent |
| Size | 5-10cm |
| Color | yellow |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, barely covered, germ. 1 month, 10-16°C cuttings in late spring and late summer |
| Synonyms | Actinea acaulis Spreng. Actinea acaulis var. lanata J.F.Macbr. Actinea acaulis var. lanigera S.F.Blake Actinea acaulis var. septentrionalis A.Nelson Actinea acaulis var. simplex J.F.Macbr. Actinea depressa var. pygmaea J.F.Macbr. Actinea eradiata A.Nelson Actinea formosa A.Nelson Actinea incana A.Nelson Actinea osterhoutii A.Nelson Actinea simplex A.Nelson Actinella acaulis (Pursh) Nutt. Actinella depressa var. pygmaea A.Gray Actinella eradiata A.Nelson Actinella incana A.Nelson Actinella lanata Nutt. Actinella leptoclada A.Gray Actinella simplex A.Nelson Cephalophora acaulis (Pursh) DC. Gaillardia acaulis Pursh Hymenoxys acaulis (Pursh) K.F.Parker Leptopoda acaulis (Pursh) DC. Picradenia acaulis (Pursh) Britton Ptilepida acaulis (Pursh) Britton Tetraneuris eradiata A.Nelson Tetraneuris incana A.Nelson Tetraneuris pygmaea Wooton & Standl. Tetraneuris septentrionalis Rydb. Tetraneuris simplex A.Nelson |
| Territory | 7 Northern America 71 Western Canada (ABT Alberta, SAS Saskatchewan) 73 Northwestern U.S.A. (COL Colorado, IDA Idaho, MNT Montana, WYO Wyoming) 74 North-Central U.S.A. (KAN Kansas, NDA North Dakota, NEB Nebraska, OKL Oklahoma, SDA South Dakota) 77 South-Central U.S.A. (NWM New Mexico, TEX Texas) |
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