Saxifragaceae - Saxifrage Family
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The family Saxifragaceae consists of about about 30 genera and 580 species worldwide. Most members of the Saxifrage family are herbs, and usually have a flower cluster held well above the basal whorl of leaves. Many of its members grow in rocky places, whence the scientific name, which means 'stone-breaker'. Economically speaking, the family is important only for such ornamentals as Saxifraga, Heuchera, and Bergenia.
The Saxifragaceae is primarily north temperate, although it does have representatives in the southern hemisphere. The leaves, which, as mentioned above, are primarily basal, are simple but palmately lobed or cleft.
The flowers are radially symmetric, and have a distinct calyx and corolla of 5 (less
frequently 4) separate petals and petals. There are generally twice as many stamens as petals, but there may be more. Pistils are usually divided into 2 (rarely 4). The ovaries may be fused only at the base, making it look as if there are two simple pistils, or they may be fused almost to the stigmas. The ovary can be either superior or inferior.
The fruit is a capsule with a lot of seeds.

 
 
Guide to Identify Presented Genera and Species of the Saxifrage Family
FLOWERS WITH WHOLE PETALS
Boykinia heucheriformis - Alumroot Brookfoam
Alpine plant, up to 20 cm tall. Rocky slopes, moist but well-drained soil.
Flowers pink, about 10 mm wide, in dense clusters. Calyx large, reddish.
Leaves basal, kidney-shaped, 1" wide and leathery, coarsely toothed, stipuled.
Heuchera cylindrica - Round-leaved Alumroot
Glandular herbs, about 20-50 cm tall. Shaded, rocky sites, higher elevations.
Flowers creamy-white, bell-shaped, in dense, narrow clusters on tall stems.
Leaves basal, heart- to egg-shaped, 5-7-lobed, long-stalked.
Parnassia fimbriata - Fringed Grass of Parnassus
Stems leafless or has 1 clasping leaf midstem. Wet sites at higher elevations.
Flowers white, 15-20 mm wide, solitary. Petals veined, stamens with glands.
Leaves basal, broadly heart- to kidney-shaped, glossy, stalked.
Saxifraga bronchialis - Spotted or Matted Saxifrage
Alpine, mat-forming, 5-15 cm tall. Dry, open rocky sites.
Flowers white, 10-15 mm wide, in open clusters. Petals spotted purple/yellow.
Leaves basal and alternate, rigid, 5-15 mm long, lance-shaped, spine-tipped.
Saxifraga odontoloma - Brook Saxifrage
Stem reddish-glandular, 20-60 cm tall. Wet meadows, springs, mountains.
Flowers white, on branches. Petals round, with 2 yellow dots. Stamens flat.
Leaves basal, up to 6 cm wide, smooth, kidney-shaped, with 15-30 teeth.
Saxifraga rhomboidea - Diamond-leaved Saxifrage
Glandular stem, 10-20 cm tall. Moist, open slopes, foothills to alpine.
Flowers white, short-stalked, many in dense, ball-like heads.
Leaves basal, thick, diamond-shaped, short-stalked, w. round-toothed edges.
FLOWERS WITH DEEPLY DIVIDED OR FRINGED PETALS
Lithophragma parviflorum - Small-flowered Woodland Star
Glandular-hairy, 10-30 cm tall. Dry, rocky sites, foothills to montane.
Flowers white, grouped closely near top of stem. Petals are deeply 3-cleft.
Basal leaves 1-3 cm long, hairy, 5-lobed, long-stalked. Stem leaves smaller.
Mitella pentandra - Five-stamened Mitrewort
Slender plants, glandular or hairless. Moist mountain meadows and woods.
Flowers in tall, narrow spikes. Petals greenish, fringed into thread-like lobes.
Leaves basal, heart-shaped, long-stalked, with 5-7 toothed, shallow lobes.
Alphabetical listing with links to presented species of the Saxifrage family:
     
Scientific Name English Name Swedish Name
 

 

 
Boykinia
Heuchera
Lithophragma
Mitella
Parnassia
Saxifraga
Boykinia
Alumroot
Woodland Star
Mitrewort
Grass-of-Parnassus
Saxifrage
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