Endemic
Synonyms: Chamaesyce arenicola (Parish) Millspaugh C. ocelleta subsp. arenicola (Parish) Thorne Euphorbia arenicola Parish E. ocellata subsp. arenicola (Parish) Oudejans E. ocelleta var. arenicola (Parish) Jepson E. ocelleta var. kirbyi J. T. Howell
Treatment appears in FNA Volume 12. Treatment on page 279.

Stems 10–35 cm, glabrous. Leaves: stipules 0.5–1.6 mm, glabrous; petiole 0.3–1.2 mm, glabrous; blade 2.3–13 × 1.5–6 mm, apex acute, occasionally mucronate, surfaces glabrous; lateral-veins frequently visible abaxially. Peduncle 0.9–2 mm. Involucre 1–1.8 × 1.3–2.4 mm, glabrous; gland appendages absent. Pistillate flowers: ovary glabrous. Capsules 1.4–2.7 × 1.9–2.6 mm, glabrous; columella 1.4–2 mm. Seeds whitish gray, ovoid, 1.1–1.6 × 0.9–1.3 mm, rugose or smooth.


Phenology: Flowering and fruiting early spring–fall.
Habitat: Sandy soils, dunes, river washes, hard clay soils, roadsides.
Elevation: 80–1000 m.

Distribution

V12 352-distribution-map.jpg

Ariz., Calif., Idaho., Nev., Utah.

Discussion

Plants with smooth, round seeds and larger, ovate to lanceolate (and not usually falcate) leaves have been segregated as E. ocellata subsp. arenicola. Leaf size and shape and seed surface sculpturing, however, vary considerably across the species range, and most individuals appear intermediate. Therefore a variable and more broadly defined subsp. ocellata is recognized here.

Selected References

None.

Lower Taxa

None.

"connate" is not a number. "distinct" is not a number."connate" is not a number. "distinct" is not a number.

mucronate;acute +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
orbiculate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Victor W. Steinmann +, Jeffery J. Morawetz +, Paul E. Berry +, Jess A. Peirson +  and Ya Yang +
Durand & Hilgard +
rounded +  and cordate +
Anisophyllum +
0.23 cm2.3 mm <br />0.0023 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
ovate;deltate or falcate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
subglobose +  and broadly ovoid +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Ariz. +, Calif. +, Idaho. +, Nev. +  and Utah. +
80–1000 m. +
red +  and yellow +
0.4mm;0.6mm +
subtending +
oblong +  and orbiculate +
0.5mm +  and 0.7mm +
Sandy soils, dunes, river washes, hard clay soils, roadsides. +
axillary +  and terminal +
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
campanulate +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
caducous +, deciduous +  and persistent +
bractlike +
palmate +  and pinnate +
toothed +  and entire +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
connate;distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Flowering and fruiting early spring–fall. +
Pl. Heermann., +
whitish gray +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
smooth +  and rugose +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
free +, connate +  and distinct +
decumbent +, reclining +, ascending +  and erect +
flattened +  and terete +
10 cm100 mm <br />0.1 m <br /> (35 cm350 mm <br />0.35 m <br />) +
interpetiolar +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
connate +  and distinct +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (?) +  and 0.05 cm0.5 mm <br />5.0e-4 m <br /> (?) +
Chamaesyce arenicola +, C. ocelleta subsp. arenicola +, Euphorbia arenicola +, E. ocellata subsp. arenicola +, E. ocelleta var. arenicola +  and E. ocelleta var. kirbyi +
Euphorbia ocellata subsp. ocellata +
Euphorbia ocellata +
subspecies +
axillary +  and terminal +
10 +, 9 +, 8 +, 7 +  and 6 +