Lithophragma glabrum

Lithophragma glabrum is a slender perennial western North American mountain plant in the Saxifrage family (Saxifragaceae), known by the common names bulbous woodland star, bulbiferous prairie-star, smooth woodland star, and smooth rockstar.[1][2]

Lithophragma glabrum flowers close
Rock star, divided basal leaves & red bulblets

Lithophragma glabrum
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Saxifragales
Family: Saxifragaceae
Genus: Lithophragma
Species:
L. glabrum
Binomial name
Lithophragma glabrum
Synonyms

Lithophragma bulbiferum

Habitat and range

It is native to western North America from British Columbia to California and Saskatchewan to Colorado, where it grows in many types of habitat.

Growth pattern

It is a rhizomatous perennial herb growing erect or leaning with a slender glandular-pubescent flowering stem.

Leaves and stems

The small leaves are mostly located on the lower part of the stem. Each is cut into five deep fingerlike lobes or divided into five leaflets which may be toothed.

Inflorescence and fruit

The stem bears 1 to 7 flowers, each in a cuplike calyx of hairy red or green sepals. The five petals are white or pink-tinged, up to about 7 millimeters long, and divided into several, often five, toothlike lobes. Next to the flowers are bracts with accompanying bulblets.[1] The plant reproduces when these bulblets drop to the ground and take root.[3]

References
  1. "Lithophragma glabrum". WTU Herbarium Image Collection. Burke Museum, University of Washington. Retrieved 2013-02-01.
  2. Sierra Nevada Wildflowers, Karen Wiese, 2nd ed, 2013, p. 90
  3. Southwest Colorado Wildflowers
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