Jepson Herbarium
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Indexes to all accepted names and synonyms: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

Annual to perennial herb; generally fleshy.
Stem: 1–many, generally glabrous.
Leaf: simple, alternate or opposite.
Inflorescence: axillary or terminal; cyme, raceme, panicle, umbel, or flower 1.
Flower: bisexual, radial; sepals generally 2(9), free; petals (1)2–19, free or ± fused; stamens 1–many, epipetalous or not, anthers pink, rose, or yellow; ovary superior, chamber 1, ovules 1–many, placenta basal or free-central; styles (0)1–8, generally fused at base, branched.
Fruit: capsule, circumscissile or 2–3-valved.
Seed: 1–many, shiny or ± pebbly or sculptured, black or gray, generally with oil-filled appendage as food for ants.
± 22 genera, ± 230 species: generally temperate America, Asia, Australia, Eur, Kerguelen Is, New Zealand, s Africa, poorly represented in Eur; some cultivated (Lewisia, Calandrinia). [Ogburn & Edwards 2009 Amer J Bot 96:391–408] Details of flowers, seeds require 20× magnification. —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Applequist et al. 2006 Syst Bot 31:310–319; Nyffeler et al. 2008 Haseltonia 14: 26–36]
Unabridged note: May include Hectorellaceae.

Key to Montiaceae

Perennial 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.
18 species: w North America, 16 in flora. (Captain Meriwether Lewis, of Lewis & Clark Expedition, 1774–1809) [Wilson et al. 2005 W N Amer Naturalist 65:345–358] Many hybrids, cultivated, including Lewisia ×whiteae Purdy in CA; Lewisia columbiana (A. Gray) B.L. Rob. not in CA.
Unabridged references: [Colley & Mineo 1985 Pacific Hort 46; Davidson 2000 Lewisias (Portland); Dempster 1996 Madroño 43:415–416; Elliott 1966 Bull Alpine Gard Soc Gr Brit 34:1–76; Foster, Carroll, & Hipkins 1997 Fremontia 25:15–19; Gankin & Hildreth 1968 Four Seasons 2(4):12–14; Heckard & Stebbins 1974 Brittonia 26:305–308; Hershkovitz 1990 Phytologia 68:267–270; Hershkovitz & Hogan 2003 FNANM 4:476–485; Hohn 1975 Ph.D. Dissertation, Univ of Washington; Mathew 1989 Kew Magazine Monogr; Daubenmire 1975 Syesis 8:9–23]
Unabridged note: Many hybrids, cultivars (Mathew 1989), incl Lewisia ×whiteae Purdy in CA, as well as Lewisia columbiana (Howell ex A. Gray) B.L. Rob. from Douglas Co., OR north to BC; Lewisia maguirei A.H. Holmgren endemic to NV; Lewisia sacajaweana B.L. Wilson & E. Rey-Vizgirdas restricted to ID; Lewisia tweedyi, endemic to n Cascades of WA, BC now placed in Cistanthe.

Leaf: many, rosetted, 0.5–5 cm, linear, thick, entire, tapered at base, tip blunt.
Inflorescence: stems several to many, 2–6 cm, each 1-flowered, disjointing near middle, leaving proximal ring of 4–7(8) scarious, awl-like bracts; flowers exserted from leaves; pedicel 1–15(30).
Flower: sepals (4)6–9, ± 3/4 × corolla, petal-like, scarious, widely obovate, entire to ± jagged; petals 10–19, 12–35 mm, obovate- oblong, white, pink, rose, lavender, base ± white, tip obtuse-notched; stamens 20–50; stigmas 4–9.
Fruit: 5–6 mm.
Seed: 6–25, 2–2.5 mm.
n=13,14. [Online Interchange]
Unabridged note: The following accessions, if verified, would represent range (and/or elevational) extensions (as indicated): PGM2808, PGM0517, PGM6631 (SCoRO, not det to var.) to be checked... and UC570350, UC1031357 (ScV-Sutter Buttes). Both are probably var. rediviva.

Previous taxon: Lewisia pygmaea
Next taxon: Lewisia rediviva var. minor

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].

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Bioregions in which taxon occurs	Red area (if present) is the part of the bioregion lying between the upper and lower elevation limits of the taxon; markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may have georeferencing or identification issues.
Chart based on elevation range in Manual and elevations and coordinates of CCH records. Data provided by the participants of the Consortium of California Herbaria. Note: About half of the CCH records include both elevation and coordinates.	Map made in collaboration with Scott Loarie. Data provided by the participants of the Consortium of California Herbaria. View all CCH records   CCH collections by month Duplicates counted once; synonyms included. Species do not include records of infraspecific taxa. Blue line denotes Manual flowering time.