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used ornamentally in rock gardens

Revision as of 11:40, 7 May 2012

Micranthes integrifolia

Ben Legler

Micranthes integrifolia, commonly known as whole-leaf saxifrage or swamp saxifrage is a perennial herb in the Saxifragaceae family.


  • Saxifraga integrifolia


Kingdom: Plantae – Plants

Subkingdom: Tracheobionta – Vascular plants

Superdivision: Spermatophyta – Seed plants

Division: Magnoliophyta – Flowering plants

Class: Magnoliopsida – Dicotyledons

Subclass: Rosidae

Order: Rosales

Family: Saxifragaceae – Saxifrage family

Genus: Micranthjes – saxifrage

Species: Micranthes integrifolia Hook. – wholeleaf saxifrage


A somewhat hairy perennial, the leafless flowering stems usually growing singly from a rhizome, reaching 10-30 cm in height. Leaves form a basal rosette with no cauline leaves. The blades are 2-5 cm long, narrowly rhombic to rhombic-ovate, narrowed gradually to short, broad petioles. Prominent marginal hairs line the leaves and are rusty-woolly on the lower surface.

The inflorescence is a short, compact panicle, subtended by a leafy, rusty-woolly bracts. The calyx is broadly conic, the 5 lobes oblong-lanceolate, 1-2 mm. long and reflexed. Individual flowers have 5 white, obovate petals, 1.5-3 mm. long, at least half as broad as long. Stamens number 10 and are short, awl-shaped.

Bloom Period

Late March - July


West side of the Cascades, British Columbia to Lincoln County, Oregon, and in the Columbia River Gorge


Prairies, grassy slopes and vernally moist areas, sea level to subalpine


used ornamentally in rock gardens


Photo Gallery


References & Notes

Micranthes integrifolia -1[1]
  1. University of Washington