Rock Garden Plants
Heuchera micrantha Douglas  
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FamilySAXIFRAGACEAE
Genus speciesHeuchera micrantha Douglas 
SynonymsHeuchera barbarossa C.Presl
 Heuchera glaberrima Rydb.
 Heuchera nuttallii Rydb.
Habitatrocks and scree
Altitude0-2200m
Descriptionleaves petiolate, orbiculate, 5-7-lobate, at base cordate, dentate, obtuse, glabrous or glandular, viscid, inflorescence lax spicate, petals oblanceolate, 1-3mm long
Size10-60cm
Colorwhite
Bloomearly summer
Ca-
Typetuft
Cultivationrock crevices with favourable water regime, eastern slopes
alpine house, poor, drained soil, shading in summer
Propagationseed in spring, barely covered, germ. 1-3 months, 16-21°C
division in spring
Territory Northern America
     Western Canada
     Northwestern U.S.A. (Idaho , Oregon , Washington )
     Southwestern U.S.A. (California)
BibliographyPlants of the World online powo.science.kew.org
International Plant Names Index www.ipni.org
Comments

SAXIFRAGACEAE

Heuchera micrantha Douglas ex Lindl., Edwards‘s Bot. Reg. 15: t. 1302 (1830)
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micrantha typica Rosend. & al., Minnesota Stud. Pl. Sci. 2: 41 (1936)

Synonyms:
Heuchera barbarossa C.Presl
Heuchera glaberrima Rydb.
Heuchera micrantha acuta Rosend. & al.
Heuchera micrantha glaberrima (Rydb.) W.H.Baker
Heuchera micrantha nuttallii (Rydb.) Rosend.
Heuchera nuttallii Rydb.

nw. USA, California
73 IDA ORE WAS 76 CAL

10-1900m

micrantha diversifolia (Rydb.) Rosend. & al., ibid.

Basionym:
Heuchera diversifolia Rydb., N. Amer. Fl. [N.L.Britton & al., eds.] 22: 102 (1905)

Synonyms:
Heuchera micrantha paciifica Rosend. & al.

British Columbia, w. USA
71 BRC 73 ORE WAS 76 CAL

100-1900m

micrantha erubescens (A.Braun & C.D.Bouché) Rosend., Bot. Jahrb. Syst. 37(2, Beibl. 83): 77 (1905)

Basionym:
Heuchera erubescens A.Braun & C.D.Bouché, Index Seminum [B, Berolinensis] 1871(App.): 2 (1871)

California
76 CAL

100-2200m

micrantha hartwegii (S.Watson ex Wheelock) Rosend., ibid.

Basionym:
Heuchera pilosissima hartwegii S.Watson ex Wheelock, Bull. Torrey Bot. Club 17: 195 (1890)

Synonyms:
Heuchera hartwegii (S.Watson ex Wheelock) Rydb.

nw. USA, California
73 ORE WAS 76 CAL

0-1600m

micrantha macropetala Shipes & E.F.Wells, Rhodora 98: 366 (1997)

Oregon, California
73 ORE 76 CAL

100-1800m

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