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Compilation
Lithophragma rupicola

9 Images see all

Isotype of Lithophragma rupicola Greene [family SAXIFRAGACEAE]
Original material of Lithophragma rupicola Greene [family SAXIFRAGACEAE]
Isotype of Lithophragma rupicola Greene [family SAXIFRAGACEAE]
Original material of Lithophragma rupicola Greene [family SAXIFRAGACEAE]
Isotype of Lithophragma rupicola Greene [family SAXIFRAGACEAE]
Type? of Lithophragma rupicola Greene [family SAXIFRAGACEAE]
Isotype of Lithophragma rupicola Greene [family SAXIFRAGACEAE]
Original material of Lithophragma rupicola Greene [family SAXIFRAGACEAE]
Original material of Lithophragma rupicola Greene [family SAXIFRAGACEAE]
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Name

Identification
Isotype of Lithophragma rupicola Greene [family SAXIFRAGACEAE ] Lithophragma tenellum Nutt. [family SAXIFRAGACEAE ] (stored under name); Verified by Roy Lewis Taylor,
Related name
  • Lithophragma tenellum
  • Lithophragma tenella
  • Lithophragma rupicola
Common name
  • Slender woodland star, Flora of North America Vol. 8

Flora

Entry for Lithophragma tenellum Nuttall [family SAXIFRAGACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 8,
Names
Lithophragma tenellum Nuttall [family SAXIFRAGACEAE], in J. Torrey and A. Gray, Fl. N. Amer., 1: 584. 1840 (as tenella) ,
Lithophragma australe Rydberg [family SAXIFRAGACEAE]
Lithophragma brevilobum Rydberg [family SAXIFRAGACEAE]
Lithophragma rupicola Greene [family SAXIFRAGACEAE]
Lithophragma tenellum var. thompsonii (Hoover) C. L. Hitchcock [family SAXIFRAGACEAE]
Lithophragma thompsonii Hoover [family SAXIFRAGACEAE]
Tellima tenella (Nuttall) Steudel [family SAXIFRAGACEAE]
Treatment Author(s)
Roy L. Taylor
Information
Plants slender. Flowering stems simple, 15–30 cm. Leaves in basal rosette and cauline, basal unlobed, irregularly 3–5-lobed, or digitately lobed, sometimes almost pinnatifid, cauline (2), deeply 3-lobed, appearing pinnatifid, much reduced, more highly dissected than basal; stipules broad, decurrent on petiole base, (margins fimbriate); petiole to 8 cm; blade light green, orbiculate, (base hastate), surfaces sparsely hairy. Inflorescences 1–5, (compact), erect, 3–12-flowered racemes, simple, (10–12 cm). Pedicels shorter than hypanthium. Flowers persistent, not fragrant, slightly pendulous; hypanthium campanulate or hemispheric, becoming elongate-campanulate in fruit, open at throat; sepals erect in bud, widely spreading after anthesis, triangular; petals (exserted), widely spreading, pink, sometimes white, ovate, narrowly clawed, palmately 5–7-lobed, (sinuses extending 1/3–1/2 distance to base), 3–7 mm, ultimate margins entire; ovary to 1/2 inferior; styles exserted slightly in fruit; stigma papillae in narrow subapical band. Seeds 0.6–0.7 mm, smooth or wrinkled. 2n = 14, 35.
Phenology
Flowering (Feb–)May–Jun(–Aug)
Altitude range
1200–3000(–3400) m
Distribution
USA Ariz.USA Calif.USA Colo.USA IdahoUSA Mont.USA Nev.USA N.Mex.USA Oreg.USA UtahUSA Wash.USA Wyo.Canada B.C.
Discussion
Lithophragma tenellum usually occurs on the eastern side of the Cascade Mountains and in the Rocky Mountains, Nevada, and Utah into western North America.
Taxonomy of Lithophragma tenellum is poorly understood because there are few collections from widely divergent geographical areas. The northwestern population (Washington, British Columbia) has been separated as a distinct species (L. thompsonii) based on the extent of the basal leaf lobation, which often shows considerable variation in all species. However, other populations in the Rocky Mountains, Nevada, and Utah have been observed with this lobation, as has Washington-British Columbia material having the more typical leaf form.

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