- Scientific Name: Micranthes integrifolia
- Family: Saxifragaceae
- Common Names: Columbian saxifrage, swamp saxifrage, whole-leaf saxifrage
- Synonyms/Misapplications: Saxifraga integrifolia, Saxifraga laevicarpa
- Codon: MICINT
|Genus:|| Micranthes Haw.|
|Species:|| Micranthes integrifolia (Hook.) Small|
A somewhat hairy perennial, the leafless flowering stems usually growing singly from a rhizome, reaching 10-30 cm in height.
Leaves for a basal rosette, and have smooth margins, a visible center vein, and are rounded.
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.
Ovaries are green and can turn red as fruit attached.
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
Swamp saxifrage prefers moister areas in prairies, such as near a stream or at the base of a tree.
Used ornamentally in rock gardens
Can be propagated by seed, division or cuttings.
Seed should be planted in winter and barely covered. Germination takes place in 1 to 3 months at 16-21°C
Division should be done after flowering.
Cuttings in should be taken in late summer.
Average Measurement: 0.8 x 0.4 x 0.3
Measurement Range: L: 0.6 – 0.8, W: 0.2 – 0.5, D: 0.2 – 0.4
Shape: Seed narrowed at hilum and opposite apex, forming points. Middle between hilum and opposite apex rounded. Hilum is puckered.
Color: Seeds golden brown, and slightly darker at hilum.
Surface: Seeds bumpy and longitudinally ridged. Seeds are slightly lustrous.
- Integrated Taxonomic Information System. Retrieved from https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=895012
- Bowcutt, F., & Hamman, Sarah. (2016). Vascular plants of the South Sound prairies (First ed.). Olympia, Washington: The Evergreen State College Press.
- http://biology.burke.washington.edu/herbarium/imagecollection.php?Genus=Saxifraga&Species=integrifolia Burke Museum University of Washington
- http://www.kadel.cz/flora/e/kvCard.asp-Id=5519.htm Rock Garden Plant Database