Treatment appears in FNA Volume 12. Treatment on page 290. Mentioned on page 289.

Stems 5–30 cm. Leaf-blade 2–5.5 × 1–3.5 mm. Cyathia solitary at distal nodes of stem; peduncle 0.3–0.7 mm. Involucre usually turbinate-campanulate, occasionally suburceolate, 1.1–1.5 × 0.9–1.3 mm; glands sessile, subcircular to slightly elliptic, 0.2–0.5 × 0.3–0.7 mm; appendages absent. Staminate flowers 15–36. Capsules 1.1–1.6 × 1.5–1.8 mm. Seeds with (2–) 3 (–4) prominent transverse ridges.


Phenology: Flowering and fruiting summer–late fall.
Habitat: Desert scrub, mostly in calcareous soils.
Elevation: 600–1300 m.

Distribution

V12 1020-distribution-map.jpg

Tex., Mexico (Chihuahua), Mexico (Coahuila)

Discussion

Variety theriaca occurs in Brewster and Presidio counties in trans-Pecos Texas.

Selected References

None.

Lower Taxa

None.

"connate" is not a number. "distinct" is not a number."/2" is not declared as a valid unit of measurement for this property.

rounded +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
0 cm0 mm <br />0 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
white to pink +
crenate +, entire +, forming rim +  and semilunate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
Victor W. Steinmann +, Jeffery J. Morawetz +, Paul E. Berry +, Jess A. Peirson +  and Ya Yang +
L. C. Wheeler +
rounded +
Anisophyllum +
0.2 cm2 mm <br />0.002 m <br /> (0.71 cm7.1 mm <br />0.0071 m <br />) +
obovate;orbiculate;obovate;orbiculate;oblong;ovate +
0.1 cm1 mm <br />0.001 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Tex. +, Mexico (Chihuahua) +  and Mexico (Coahuila) +
600–1300 m. +
yellow-green +  and red-purple +
0.2mm;0.5mm +
subtending +
subcircular +  and slightly elliptic +
0.3mm +  and 0.7mm +
Desert scrub, mostly in calcareous soils. +
axillary +  and terminal +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
suburceolate +  and turbinate-campanulate +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
caducous +, deciduous +  and persistent +
bractlike +
palmate +  and pinnate +
toothed +  and entire +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
connate;distinct +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Flowering and fruiting summer–late fall. +
reddish-brown;whitish +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
4-angled +  and ovate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
free +, connate +  and distinct +
not mat-forming +
prostrate +  and reclining +
flattened +  and terete +
5 cm50 mm <br />0.05 m <br /> (30 cm300 mm <br />0.3 m <br />) +
connate +  and distinct +
interpetiolar +
2-fid +, scale-like +  and subulate +
connate +  and distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (?) +  and 0.05 cm0.5 mm <br />5.0e-4 m <br /> (?) +
Chamaesyce theriaca +
Euphorbia theriaca var. theriaca +
Euphorbia theriaca +
variety +
axillary +  and terminal +
10 +, 9 +, 8 +, 7 +  and 6 +