Claytonia perfoliata subsp. mexicana

(Rydberg) John M. Miller & K. L. Chambers

Novon 3: 269. 1993.

Common names: Madrean miner’s-lettuce
Illustrated
Basionym: Limnia mexicana Rydberg in N. L. Britton et al., N. Amer. Fl. 21: 309. 1932
Treatment appears in FNA Volume 4. Treatment on page 472. Mentioned on page 473.

Leaves: blades usually green, epidermal gas pockets usually absent; basal leaf-rosettes suberect to flattened, 2–30 cm, blade deltate, apex apiculate drip-tip, mucro 1–2 mm; cauline leaves perfoliate, blade 1–10 cm diam., margins notched or deeply cleft, apex often with twin apiculate, curved tips. Seeds 2–3 mm. 2n = 12, 24, 60.


Phenology: Flowering Feb–Apr.
Habitat: Rockslides, landslides, along animal trails
Elevation: 0-2000 m

Distribution

V4 945-distribution-map.gif

Ariz., Calif., N.Mex., Mexico, Central America (Guatemala)

Discussion

In the Channel Islands and Arizona, flowering apparently follows spring rains.

Selected References

None.

Lower Taxa

None.
60 +, 24 +  and 12 +
5 cm50 mm <br />0.05 m <br /> (6 cm60 mm <br />0.06 m <br />) +
red pigmentation +
1cm;7cm +
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 +
(Rydberg) John M. Miller & K. L. Chambers +
2 cm20 mm <br />0.02 m <br /> (30 cm300 mm <br />0.3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Limnia mexicana +
cleft or notched +  and perfoliate +
1 cm10 mm <br />0.01 m <br /> (?) +  and 10 cm100 mm <br />0.1 m <br /> (?) +
occasionally dentate;crisped +
deltate +
minute +
scale-like +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
membranous +
whorled +  and opposite +
connate +, or +  and distinct +
3 (?) +  and 2 (?) +
Madrean miner’s-lettuce +
Ariz. +, Calif. +, N.Mex. +, Mexico +  and Central America (Guatemala) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0-2000 m +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Rockslides, landslides, along animal trails +
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 /> (0.2 cm2 mm <br />0.002 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 />) +
Flowering Feb–Apr. +
capillary +
suberect;erect +
flattened +
dispersed +
3 +  and 6 +
smooth +  and tuberculate +
rounded +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
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 subsp. mexicana +
Claytonia perfoliata +
subspecies +
not deciduous +
fleshy +  and succulent +
8 +, 7 +, 6 +  and 5 +