| Family | POLYGONACEAE |
| Genus species | Koenigia davisiae (W.H.Brewer) T.M.Schuster & Reveal |
| Bibliography | Taxon 64: 1201 (2015) |
| Native Range | nw. USA to California |
| Primary Biome | Subalpine |
| Habitat | rocky slopes |
| Altitude | 1200-3100m |
| Description | leaves petiolate, oblong-ovate to ovate, subcoriaceous, entire, glabrous, inflorescence axillary, racemose, flowers 1-4 per ocreate fascicle, anthers yellow or pink |
| Size | 15-40cm |
| Color | greenish, pinkish white |
| Bloom | summer, autumn |
| Ca | |
| Type | perennial |
| Cultivation | rock crevices with favourable water regime, eastern slopes alpine house, poor, drained soil, shading in summer |
| Propagation | seed in spring, germ. 1-3 months, 13-18°C division in spring; cuttings in late spring and late summer |
| Synonyms | Aconogonon davisiae (W.H.Brewer ex A.Gray) Soják Aconogonon davisiae var. glabrum (G.N.Jones) S.P.Hong Aconogonon newberryi (Small) Soják Polygonum davisiae W.H.Bŕewer ex A.Gray Polygonum newberryi Small Polygonum newberryi var. glabrum G.N.Jones |
| Territory | 7 Northern America 73 Northwestern U.S.A. (IDA Idaho, ORE Oregon, WAS Washington) 76 Southwestern U.S.A. (CAL California) |