Potentilla gordonii (Hook.) Greene


Family	ROSACEAE
Genus species	Potentilla gordonii (Hook.) Greene
Synonyms	Horkelia chaetophora Rydb.
	Horkelia gordonii Hook.
	Ivesia gordonii (Hook.) Torr. & A.Gray
Habitat	rocks and scree
Altitude	1000-3600m
Description	taproot, basal leaves numerous, 2-7cm long, pinnate, segments pinnatilobate, lobes 2-8, obovate, 3-8mm long, petals obovate, 3-4mm long, flowers in head
Size	5-40cm
Color	yellow
Bloom	late spring
Ca
Type	tuft
Cultivation	rock crevices with favourable water regime, eastern slopes alpine house, poor, drained soil, shading in summer
Propagation	seed in spring, barely covered, germ. 1-3 months, 18-21°C cuttings in late summer and fall
Territory	Northern America Northwestern U.S.A. (Colorado , Idaho , Montana , Wyoming ) Southwestern U.S.A. (Utah)
Bibliography	Plants of the World online powo.science.kew.org International Plant Names Index www.ipni.org

Comments	ROSACEAE Potentilla gordonii (Hook.) Greene, Pittonia 1(3): 106 (1887) Basionym: Horkelia gordonii Hook., Hooker‘s J. Bot. Kew Gard. Misc. 5: 341 (1853) Synonyms: Ivesia gordonii (Hook.) Torr. & A.Gray ============================================================================ gordonii typica ined. Synonyms: Horkelia chaetophora Rydb. Ivesia chaetophora (Rydb.) Rydb. Potentilla gordonii chaetophora (Rydb.) Jeps. nw. USA, Utah 73 COL IDA MNT WYO 76 UTA 2000-3600m gordonii alpicola (Rydb. ex Howell) Mosyakin & Shiyan, Phytotaxa 474(3): 264 (2020) Basionym: Ivesia alpicola Rydb. ex Howell, Fl. N.W. Amer. [Howell] 1(2): 182 (1898) Synonyms: Ivesia gordonii alpicola (Rydb. ex Howell) Ertter & Reveal Horkelia gordonii alpicola (Rydb. ex Howell) Rydb. nw. USA, California 73 IDA MNT ORE WAS 76 CAL 2100-3300m gordonii ursinorum Jeps., Man. Fl. Pl. Calif. [Jepson] 492 (1925) Synonyms: Ivesia gordonii ursinorum (Jeps.) Ertter & Reveal w. USA 73 IDA ORE 76 CAL NEV 1800-3500m gordonii wasatchensis (N.H.Holmgren ex Ertter & Reveal) Mosyakin & Shiyan, ibid. Basionym: Ivesia gordonii wasatchensis N.H.Holmgren ex Ertter & Reveal, Novon 17(3): 323 (2007) nw. USA, Utah 73 IDA MNT WYO 76 UTA 2000-3200m