Claytonia perfoliata

Donn ex Willdenow

Sp. Pl. 2: 1186. 1798.

Common names: Miner’s-lettuce
Illustrated
Synonyms: Montia perfoliata (Donn ex Willdenow) Howell
Treatment appears in FNA Volume 4. Treatment on page 472.

Plants annual, with minute, tuberous bodies; periderm absent. Stems 5–50 cm. Leaves: basal leaves in suberect to erect, seldom flattened rosettes, petiolate, 1–30 cm, blade often with weak red pigmentation, broadly rhombic to deltate or reniform, 1–7 × 0.5–5 (–6) cm, apex obtuse to apiculate, mucro 1–3 mm; cauline leaves sessile, blade perfoliate or cleft or notched, 10 cm diam. or less. Inflorescences 1-bracteate; bract leaflike, 0.5–15 mm. Flowers 3–10 mm; sepals 1.5–4 mm; petals pink or white, 2–5 mm; ovules 3. Seeds 2–5 mm, shiny and smooth; elaiosome 1–3 mm. 2n = 12, 24, 36, 48, 60.

Distribution

V4 943-distribution-map.gif

B.C., Ariz., Calif., Colo., Idaho, Mont., N.Mex., Nev., Oreg., Utah, Wash., Wyo., Central America (Guatemala), adventive in Europe, Pacific Islands (New Zealand)

Discussion

Subspecies 3 (3 in the flora).

Selected References

None.

Key

1 Basal leaf rosettes erect, 20-50 cm; cauline leaf pairs connate into perfoliate discs, blade margins entire; seeds 3-5 mm Claytonia perfoliata subsp. perfoliata
1 Basal leaf rosettes suberect to flattened, 2-30 cm; cauline leaf pairs perfoliate, blade margins notched or deeply cleft; seeds 2-4 mm > 2
2 Basal leaf blades ovate to broadly rhombic, apex obtuse; leaf blades often beet red, gray-green, or purplish; epidermal gas pockets easily seen in field; seeds 3-4 mm Claytonia perfoliata subsp. intermontana
2 Basal leaf blades deltate, apex apiculate; leaf blades mostly green; not beet red; epidermal gas pockets usually not visible (except in populations of California Transverse Ranges); seeds 2-3 mm Claytonia perfoliata subsp. mexicana

"less" is not a number.

... more about "Claytonia perfoliata"
60 +, 48 +, 36 +, 24 +  and 12 +
5 cm50 mm <br />0.05 m <br /> (6 cm60 mm <br />0.06 m <br />) +
red pigmentation +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Obtuse (?) +  and Apiculate (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.5cm;5cm +
John M. Miller +
Donn ex Willdenow +
1 cm10 mm <br />0.01 m <br /> (30 cm300 mm <br />0.3 m <br />) +
cleft or notched +  and perfoliate +
occasionally dentate;crisped +
linear +  and ovate +
minute +
scale-like +
membranous +
whorled +  and opposite +
connate +, or +  and distinct +
3 (?) +  and 2 (?) +
Miner’s-lettuce +
B.C. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, N.Mex. +, Nev. +, Oreg. +, Utah +, Wash. +, Wyo. +, Central America (Guatemala) +, adventive in Europe +  and Pacific Islands (New Zealand) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
terminal +  and axillary +
not articulate +
subrosulate +, rosulate +, alternate +, subopposite +  and opposite +
cauline +  and basal +
5 cm50 mm <br />0.05 m <br /> (6 cm60 mm <br />0.06 m <br />) +
red pigmentation +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
obtuse;apiculate +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (5 cm50 mm <br />0.05 m <br />) +
plurilocular +
globose +
White (?) +  and Pink (?) +
connate +  and distinct +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
capillary +
suberect;erect +
flattened +
dispersed +
3 +  and 6 +
smooth +  and tuberculate +
rounded +
2mm +  and 5mm +
persistent +
unequal +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Illustrated +
decumbent +  and erect +
5 cm50 mm <br />0.05 m <br /> (50 cm500 mm <br />0.5 m <br />) +
Montia perfoliata +
Claytonia perfoliata +
Claytonia +
species +
not deciduous +
fleshy +  and succulent +
8 +, 7 +, 6 +  and 5 +