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Lithophragma glabrum (Bulbous woodland star)
Glase, Terry

Lithophragma glabrum

Lithophragma glabrum Nutt.

Bulbous Woodland Star, Bulbiferous Prairie Star, Bulblet Prairie Star

Saxifragaceae (Saxifrage Family)

Synonym(s): Lithophragma bulbiferum, Lithophragma glabrum var. bulbiferum, Lithophragma glabrum var. ramulosum

USDA Symbol: LIGL2

USDA Native Status: L48 (N), CAN (N)


From the Image Gallery

1 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Arrangement: Alternate
Inflorescence: Raceme , Terminal
Fruit Type: Capsule
Size Notes: 2-13 in height.
Leaf: Leaves in basal rosette and cauline; cauline leaves (1-)2(-10), usually alternate (opposite in L. cymbalaria), unlobed, lobed, or palmately compound, sometimes with bulbils in axils; stipules present; petiole stipitate-glandular; blade rhombic or orbiculate to reniform, lobed, base cordate, hastate, rounded, ligulate, or cuneate, ultimate margins entire or toothed, apex obtuse or acute, surfaces often stipitate-glandular; venation palmate. (Webref 3).
Flower: Flowers: hypanthium partially adnate to proximal 1/2 to entire length of ovary, free from ovary 1-2 mm, green; sepals 5, green tinged with red; petals 5, white or pink; nectariferous tissue inconspicuous; stamens 10, (inserted on hypanthium, inner whorl attached proximal to point of petal insertion); filaments filiform; (anthers cordate); pistil 3-carpellate; ovary superior to 1/2 or almost completely inferior, 1-locular, carpels fully connate at ovaries; placentation parietal; styles 3; stigmas 3. (Webref 3).
Fruit: Capsules 3-beaked. (Webref 3). This species often produces bulbils instead of flowers.
Size Class: 0-1 ft. , 1-3 ft.

Bloom Information

Bloom Color: White , Pink
Bloom Time: Feb , Mar , Apr , May , Jun , Jul , Aug , Sep
Bloom Notes: Flowers pink, rarely white. (Webref 3).


USA: CA , CO , ID , MT , NV , OR , SD , UT , WA , WY
Canada: AB , BC , SK
Native Habitat: Seacoast bluffs and rocky meadows, open forests, grasslands and sagebrush shrublands to dry, open, gravelly subalpine sites, (Webref 3).

Web Reference

Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Lithophragma glabrum in USDA Plants
FNA: Find Lithophragma glabrum in the Flora of North America (if available)
Google: Search Google for Lithophragma glabrum


Record Modified: 2013-06-21
Research By: JAM

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