Plant Species: Saxifraga integrifolia, Hooker’s saxifrage
Kingdom: Plantae
Phylum: Magnoliophyta – Flowering plants
Class: Magnoliopsida – Dicotyledons
Family: Saxifragaceae – Saxifrage
Genus: Saxifraga
Species: integrifolia
Variety:
Common Name: Hooker’s saxifrage, swamp saxifrage, wholeleaf saxifrage
Species Code: SAIN4
Origin: Native to dry to mesic grasslands and mountain meadows of western North America from British Columbia to California and east to Montana.
Rare: no
Form: forb, perennial from a caudex and short rhizomes, sometimes with bulblets on the rhizomes and in the leaf axils; stems mostly solitary, leafless, 10-30 cm tall, pilose to pubescent below and glandular-pubescent above, the glands reddish to purple.
Duration: perennial
Longevity:
Habitat Type: prairie
Wetland Indicator Status: non-indicator
Leaves: all basal, elliptic to lanceolate or ovate to deltoid, subsessile to short petiolate, blade mostly 2-9 cm long, usually rusty-lanulate at least on the lower surface but sometimes glabrous, margins usually entire or sinuate, ciliate.
Mature height: 4-12 inches
Flowers: borne terminally in a short, compact panicle; calyx conic, the 5 lobes ovate or deltoid or oblong-lanceolate, 1-2 mm long, spreading to reflexed; petals white to yellow or occasionally greenish, from ovate to elliptic to obovate, rounded to retuse, 2-4.5 mm long; stamens 10.
Flower color: white
Bloom: April
Bloom starts on:
Bloom ends on:
Fruit: follicle, 3.5-5 mm long, reddish to purplish; seeds brown, 0.6 mm long, wrinkled.
Vegetation type:
Characteristics:
Saxifraga is a highly variable group and many species, subspecies and varieties have been described. They are often interfertile and grade together.
Reproduces both sexually by seed and vegetatively by rhizomes.
Perennating organ is a caudex, often with rhizomes and sometimes bulblets.
n=about 28 (Hitchcock et al 1969).
2n=38 (Baldwin et al 2004).
var. nidifica 2n=38 (University of British Columbia 2003).
Diploids only are known.
Flowers are perfect.
Fruit is a follicle.
Comments:
Sun requirement: full
Soil moisture: mesic to moist
Precipitation:
Fire:
Hazards:
Sowing time: no information available
Transplant time: no information available
Stratification: no information available
Seed yield: no information available
Seed harvest: no information available
Seed first harvest: no information available
Seed cleaning: no information available
Planting duration: no information available
Seed insect problem: no information available
Seed shatter:
Seed size: small
Seed harvest date: no information available
Seed comments:
Herbaria:
Key words:
Alternate Genus:
Alternate Species:
Alternate Variety:
Propagation:
No information is available.
Seed probably should be stratified. Seed of some species of Saxifraga
is non-dormant, while seed of some other species requires stratification.
Notes:
References:
Baldwin, B.G., S. Boyd, B.J. Ertter, D.J. Keil, R.W. Patterson, T.J. Rosatti, and D.H. Wilken (eds). 2004. Jepson Online Interchange for California Floristics. University and Jepson Herbaria, University of California, Berkeley, CA. Online at http://ucjeps.berkeley.edu/interchange.html Accessed 7/13/09
Hitchcock, C. Leo, Arthur Cronquist, Marion Ownbey, and J.W. Thompson. 1969. Vascular Plants of the Pacific Northwest. University of Washington Press. Seattle, WA. 5 vol.
University of British Columbia. 2003. British Columbia Flora. University of British Columbia Botanical Garden and Centre for Plant Research. Online at http://www.bcflora.org/ . Accessed 1/1/06.