Euphorbia peplidion

Engelmann in W. H. Emory

Rep. U.S. Mex. Bound. 2(1): 191. 1859.

Common names: Low spurge
Endemic
Synonyms: Tithymalus peplidion (Engelmann) Small
Treatment appears in FNA Volume 12. Treatment on page 306. Mentioned on page 297.

Herbs, annual, with taproot. Stems erect, unbranched or branched, 5–20 cm, glabrous. Leaves: petiole 0–0.2 mm; blade linear-oblanceolate to cuneate-spatulate, 5–20 × 1–4 mm, base attenuate, margins entire, apex rounded to obtuse, surfaces glabrous; venation inconspicuously pinnate, midvein prominent. Cyathial arrangement: terminal pleiochasial branches 3 (–5), 1–3 times 2-branched; pleiochasial bracts linear, lanceolate, or spatulate, similar in size to distal leaves; dichasial bracts distinct, rhomboid-lanceolate to ovate, falcate, base rounded to obtuse, margins entire or slightly erose, apex acute; axillary cymose branches 0–3. Cyathia: peduncle 0.3–0.5 mm. Involucre broadly campanulate-turbinate, 0.8–1 × 0.6–0.9 mm, glabrous; glands 4, elliptic, 0.2–0.3 × 0.5–0.6 mm; horns divergent, 0.4–0.5 mm. Staminate flowers 5–10. Pistillate flowers: ovary glabrous; styles 0.5–0.7 mm, 2-fid. Capsules depressed-globose, 1.8–2.3 × 2.6–3 mm, 3-lobed; cocci slightly flattened, without wings, smooth, glabrous; columella 1.3–1.5 mm. Seeds gray to brown, oblong, 1.3–1.6 × 0.9–1.1 mm, abaxial faces irregularly large-pitted, adaxial faces longitudinally sulcate; caruncle flat, umbonate, 2-lobed, 0.4 × 0.7 mm.


Phenology: Flowering and fruiting late winter–spring.
Habitat: Dry, sandy areas, open areas with poor soils, roadsides, stream banks.
Elevation: 100–300 m.

Discussion

Euphorbia peplidion is native to central and south-central Texas.

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.

... more about "Euphorbia peplidion"
acute;rounded;obtuse +
Ricarda Riina +, Dmitry V. Geltman +, Jess A. Peirson +  and Paul E. Berry +
Engelmann in W. H. Emory +
rounded +  and obtuse +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
linear-oblanceolate;cuneate-spatulate +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
dichasial +  and pleiochasial +
distinct +
falcate +, rhomboid-lanceolate +  and ovate +
cymose +, branched +, unbranched +  and pleiochasial +
arranged +  and opposite +
additional;2;4 +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
3-lobed +  and depressed-globose +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (?) +
2-lobed +  and umbonate +
0.7 cm7 mm <br />0.007 m <br /> (?) +
flattened +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Low spurge +
100–300 m. +
pistillate +  and staminate +
0.2mm;0.3mm +
subtending +
convex +  and flat +
0.5mm +  and 0.6mm +
Dry, sandy areas, open areas with poor soils, roadsides, stream banks. +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
axillary +  and terminal +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
campanulate-turbinate +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
caducous +, deciduous +  and persistent +
bractlike +
erose +  and entire +
toothed +  and entire +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
connate;distinct +
hairy +  and glabrous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Flowering and fruiting late winter–spring. +
Rep. U.S. Mex. Bound. +
gray;brown +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
free +, connate +  and distinct +
branched +  and unbranched +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
herbaceous +  and woody +
deciduous +  and persistent +
connate +  and distinct +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (?) +  and 0.07 cm0.7 mm <br />7.0e-4 m <br /> (?) +
Tithymalus peplidion +
Euphorbia peplidion +
Euphorbia subg. Esula +
species +
1-3 times 2-branched +  and pleiochasial +
rounded +  and attenuate +
10 +, 9 +, 8 +, 7 +  and 6 +