Rock Garden Plants
Potentilla osterhoutii (A.Nelson) J.T.Howell  
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FamilyROSACEAE
Genus speciesPotentilla osterhoutii (A.Nelson) J.T.Howell 
SynonymsPurpusia osterhoutii A.Nelson
 Ivesia arizonica (Eastw. ex J.T.Howell) Ertter
 Purpusia arizonica Eastw. ex J.T.Howell
Habitatrocks
Altitude1200-3500m
Descriptionleaves mainly basal, imparipinnate, segments 5-11, elliptic to orbiculate, crenate to pinnate, glandular pilose, inflorescence cymose, few flowered, petals 3-4mm long
Size5-15cm
Colorwhite, yellow
Bloomlate spring
Ca+
Typetuft
Cultivationsunny, dry, rock crevices, protection against winter wet
alpine house, poor, drained soil, sun
Propagationseed in spring, barely covered, germ. 1-3 months, 18-21°C
division in early spring; cuttings in late summer and fall
Territory Northern America
     Southwestern U.S.A. (Arizona , California , Nevada , Utah)
BibliographyPlants of the World online powo.science.kew.org
International Plant Names Index www.ipni.org
Comments

ROSACEAE

Potentilla osterhoutii (A.Nelson) J.T.Howell, Leafl. W. Bot. 4: 173 (1945)

Basionym:
Purpusia osterhoutii A.Nelson, Amer. J. Bot. 21: 574 (1934)
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osterhoutii typica J.T.Howell, Leafl. W. Bot. 4: 174 (1945)

Synonyms:
Ivesia arizonica (Eastw. ex J.T.Howell) Ertter
Purpusia arizonica Eastw. ex J.T.Howell

sw. USA
76 ARI CAL NEV UTA

1200-3500m

osterhoutii saxosa (Brandegee) J.T.Howell, ibid.

Basionym:
Purpusia saxosa Brandegee, Bot. Gaz. 27: 447 (1899)

Synonyms:
Ivesia arizonica saxosa (Brandegee) Ertter

Arizona, Nevada
76 ARI NEV

1500-2100m

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