Euphorbia curtisii

Engelmann ex Chapman

Fl. South. U.S., 401. 1860.

Common names: Curtis’s or sandhills spurge
Endemic
Synonyms: Euphorbia eriogonoides Small Tithymalopsis curtisii (Engelmann ex Chapman) Small T. eriogonoides (Small) Small
Treatment appears in FNA Volume 12. Treatment on page 245. Mentioned on page 240, 242, 246.

Herbs, perennial, with spreading rootstock. Stems erect or ascending, branched, solitary or few, previous years dead stems not persistent, 20–40 cm, usually glabrous, rarely strigose to sericeous at nodes. Leaves alternate; stipules to 0.1 mm; petiole to (0–) 1–2 mm, glabrous or strigose to sericeous; blade usually linear, occasionally elliptic, rarely ovate, proximal often greatly reduced and often scalelike, 10–30 × 1.5–6 mm, base cuneate, margins entire, occasionally sparsely ciliate, apex rounded or broadly acute, abaxial surface glabrous or sparsely strigose to sericeous, adaxial surface glabrous; venation obscure, only midvein conspicuous. Cyathia in terminal pleiochasia (fertile axillary branches occasionally present); peduncle 6.5–17 mm, filiform, glabrous. Involucre campanulate, 1–1.2 × 1.3–1.5 (–1.7) mm, glabrous or strigose to sericeous on distal 1/2; glands 5, green, reniform, 0.3 × 0.6 mm; appendages white, semicircular, 0.3–0.4 × 0.6–0.8 mm, entire. Staminate flowers 20–25. Pistillate flowers: ovary glabrous or sparsely strigose to sericeous; styles 0.6–1.1 mm, 2-fid at apex to 1/2 length. Capsules globose, 2.5–3.2 × 4.3–5.1 mm, glabrous or sparsely strigose to sericeous; columella 2.4–3.1 mm. Seeds usually gray to black, occasionally brown, ovoid-globose, 2.2 × 1.8 mm, smooth; caruncle absent.


Phenology: Flowering and fruiting early spring–summer.
Habitat: Xeric to dry oak or oak-pine scrub of sand hills, pine-oak woodlands, pine-oak savannas.
Elevation: 0–200 m.

Discussion

Euphorbia curtisii is found in the Gulf and Atlantic coastal plains.

Selected References

None.

Lower Taxa

None.

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

... more about "Euphorbia curtisii"
sparsely strigose +  and sericeous +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Jess A. Peirson +, Victor W. Steinmann +  and Jeffery J. Morawetz +
Engelmann ex Chapman +
cuneate +
Alectoroctonum +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
scale-like;ovate +
reduced +
1.5mm;6mm +
whorled +  and not opposite +
cymose +, few-branched +  and unbranched +
additional +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
sparsely strigose +  and sericeous +
0.43 cm4.3 mm <br />0.0043 m <br /> (0.51 cm5.1 mm <br />0.0051 m <br />) +
exfoliating +
ceraceous +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
Curtis’s or sandhills spurge +
Fla. +, Ga. +, N.C. +  and S.C. +
0–200 m. +
pistillate +  and staminate +
subtending +
reniform +
Xeric to dry oak or oak-pine scrub of sand hills, pine-oak woodlands, pine-oak savannas. +
pleiochasial +  and dichasial +
axillary +  and terminal +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
strigose +  and sericeous +
campanulate +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
caducous +, deciduous +  and persistent +
bractlike +
palmate +  and pinnate +
crenulate +
sparsely strigose;sericeous +
0.65 cm6.5 mm <br />0.0065 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
connate;distinct +
strigose +  and sericeous +
Flowering and fruiting early spring–summer. +
opposite +  and whorled +
with white margins +  and green +
Fl. South. U.S., +
2.2 cm22 mm <br />0.022 m <br /> (?) +
ovoid-globose +
1.8 cm18 mm <br />0.018 m <br /> (?) +
free +, connate +  and distinct +
not persistent +
prostrate +  and decumbent +
ascending +  and erect +
20 cm200 mm <br />0.2 m <br /> (40 cm400 mm <br />0.4 m <br />) +
deciduous +  and persistent +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
connate +  and distinct +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (?) +  and 0.11 cm1.1 mm <br />0.0011 m <br /> (?) +
inconspicuous +
hairy +  and glabrous +
Euphorbia eriogonoides +, Tithymalopsis curtisii +  and T. eriogonoides +
Euphorbia curtisii +
Euphorbia sect. Alectoroctonum +
species +
in terminal monochasia +  and solitary +
10 +, 9 +, 8 +, 7 +  and 6 +