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Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Montiaceae||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Perennial herb generally from short, thick, +- branched taproot; tuberous root generally 0 (or spheric). Stem: prostrate to erect, scape-like or branched. Leaf: generally in basal rosette and cauline, simple, entire or not; base wide; margin generally +- translucent. Inflorescence: +- scapose; cyme, panicle, raceme, or +- umbel; stems 1--many, generally leafless but bracted, disjointing in age or not, 1--many flowered; pedicel 0--30 mm. Flower: sepals 2--8, free, persistent; petals 4--19, white, cream, yellow, orange, pink, rose, purple, overlapped in bud, often with pink or dark purple veins; stamens 1--50; styles 2--8, fused at base, stigmas 2--8, thread-like. Fruit: 6--9 mm, spheric or ovoid, circumscissile near middle or below, translucent. Seed: 1--50, dark, generally shiny, smooth or finely tubercled, 1--4 mm in size.
Species In Genus: 18 species: western North America, 16 in flora. Etymology: (Captain Meriwether Lewis, of Lewis & Clark Expedition, 1774--1809) Note: Many hybrids, cultivated, including Lewisia ×whiteae Purdy in California; Lewisia columbiana (A. Gray) B.L. Rob. not in California.
Unabridged Note: Many hybrids, cultivars (Mathew 1989), including Lewisia ×whiteae Purdy in California, as well as Lewisia columbiana (Howell ex A. Gray) B.L. Rob. from Douglas Co., Oregon north to British Columbia; Lewisia maguirei A.H. Holmgren endemic to Nevada; Lewisia sacajaweana B.L. Wilson & E. Rey-Vizgirdas restricted to Idaho; Lewisia tweedyi, endemic to northern Cascades of Washington, British Columbia now placed in Cistanthe.
eFlora Treatment Author: John M. Miller & Lauramay T. Dempster
Jepson Online Interchange
Key to LewisiaPrevious taxon: Claytonia washingtoniana
Next taxon: Lewisia brachycalyx
Citation for this treatment: John M. Miller & Lauramay T. Dempster 2017. Lewisia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=8894, accessed on March 27, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on March 27, 2017.