Rock Garden Plants
Polyctenium fremontii (S.Watson) Greene  
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FamilyBRASSICACEAE
Genus speciesPolyctenium fremontii (S.Watson) Greene 
BibliographyLeafl. Bot. Observ. Crit. 2: 219 (1912)
Native Rangew. USA
Primary BiomeTemperate
Habitatgrassland
Altitude1000-2700m
Descriptiongrey hirsute, leaves 15-30mm, multiple pinnatipartite, segments linear, veined, acute, raceme compact, petals 4-6mm long, spathulate, silicles erect, 5-12mm long
Size5-20cm
Colorwhite, pale purple
Bloomlate spring, summer
Ca
Typesubshrub
Cultivationmesic, slightly humous, sunny site
alpine house, moist, rich, drained soil, sun
Propagationseed in spring, barely covered, germ. 1 month, 10-16°C
cuttings in late summer
SynonymsBraya pectinata Greene
Polyctenium bisulcatum Greene
Polyctenium fremontii var. bisulcatum (Greene) Rollins
Polyctenium fremontii var. confertum Rollins
Polyctenium fremontii var. typicum Rollins
Polyctenium glabellum Greene
Polyctenium williamsiae Rollins
Smelowskia fremontii S.Watson
Smelowskia fremontii var. bisulcata (Greene) O.E.Schulz
Smelowskia fremontii var. glabella (Greene) O.E.Schulz
Territory7 Northern America
     73 Northwestern U.S.A. (IDA Idaho, ORE Oregon)
     76 Southwestern U.S.A. (CAL California, NEV Nevada)
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(c) 1990-2025 RNDr. Pavel Slabý