Rock Garden Plants
Tiarella trifoliata L.  
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FamilySAXIFRAGACEAE
Genus speciesTiarella trifoliata L. 
SynonymsTiarella stenopetala C.Presl
 Tiarella trifolia J.F.Gmel.
Habitatthickets and woods
Altitude0-1900m
Descriptionleaves ternate, leaflets rhombic-ovate, pilose, shallowly 2-3-lobate, dentate, 3-5cm long, flowers 5mm long in narrow panicle, petals filiform
Size10-70cm
Colorwhite
Bloomlate spring, summer
Ca
Typetuft
Cultivationcold, shady site with a humous, moist soil
alpine house, moist, humous soil, shade
Propagationseed in winter, barely covered, germ. 1-3 months, 16-21°C
division in early spring
Territory Northern America
     Subarctic America (Alaska )
     Western Canada (Alberta , British Columbia )
     Northwestern U.S.A. (Idaho , Montana , 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

Tiarella trifoliata L., Sp. Pl. 1: 406 (1753)

Synonyms:
Blondia trifoliata (L.) Raf.
=============================================================================
trifoliata typica ined.

Synonyms:
Tiarella stenopetala C.Presl
Tiarella trifolia J.F.Gmel.

Alaska, w. Canada, nw. USA, California
70 ASK 71 ABT BRC 73 IDA MNT ORE WAS 76 CAL

0-1900m

trifoliata laciniata (Hook.) Wheelock, Bull. Torrey Bot. Club 23(3): 72 (1896)

Basionym:
Tiarella laciniata Hook., Fl. Bor.-Amer. [Hooker] 1: 239 (1832)

Synonyms:
Heuchera californica Kellogg
Tiarella californica (Kellogg) Rydb.

British Columbia, Oregon, Washington
71 BRC 73 ORE WAS

0-900m

trifoliata unifoliata (Hook.) Kurtz, Bot. Jahrb. Syst. 19(4): 378 (1894)

Basionym:
Tiarella unifoliata Hook., Fl. Bor. Amer. [Hooker] 1: 238 (1832)

Synonyms:
Petalosteira unifolia Raf.

Alaska, w. Canada, w. USA
70 ASK 71 ABT BRC 73 IDA MNT ORE WAS 76 CAL

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