Euphorbia rosescens

E. L. Bridges & Orzell

Lundellia 5: 71, fig. 4. 2002.

Common names: Rosy-pink or scrub spurge
EndemicConservation concern
Treatment appears in FNA Volume 12. Treatment on page 316. Mentioned on page 238, 314.

Herbs, perennial, with thickened rootstock. Stems erect or ascending, 15–45 cm. Leaves: petiole indistinct, blade narrowly elliptic, elliptic, narrowly oblong, or obovate, 25–55 × 5–21 mm, thick and fleshy, base attenuate, apex acute or mucronulate; only midvein evident. Cyathial arrangement: terminal pleiochasial branches 3, 7–16 cm, 4–7 times 2-branched; pleiochasial bracts ovate to oblong, 17–31 × 13–14 mm, margins entire, apex acute, often also mucronulate; dichasial bracts ovate or lanceolate, 6–18 × 8–12 mm, margins entire, apex acute, often also mucronate; axillary cymose branches 1–2. Cyathia: peduncle 3.9–6.8 mm. Involucre obconic to campanulate, 2.4–3.6 × 2.5–3.6 mm, lobes ovate to oblong, 0.7–1 mm, ciliate; glands green to yellow, oblong or trapezoidal, 0.9–1.7 × 1.9–2.5 mm, distal margins crenulate-erose. Staminate flowers 25. Pistillate flowers: mature gynophore not seen, styles connate 1/2 length, 3.3–3.6 mm. Mature capsules not seen. Seeds not seen.


Phenology: Flowering and fruiting spring–summer, rarely fall.
Habitat: Xeric oak and pine scrub, mostly on white sands, disturbed habitats.
Elevation: 20–50 m.

Discussion

Euphorbia rosescens is a narrow-endemic, gap-specialist known only from the southern portion of the Lake Wales Ridge in Highlands County. Based on leaf characteristics, it appears to be most similar to E. telephioides.

Selected References

None.

Lower Taxa

None.
... more about "Euphorbia rosescens"
Victor W. Steinmann +  and Jess A. Peirson +
E. L. Bridges & Orzell +
attenuate +
2.5 cm25 mm <br />0.025 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
obovate;oblong;obovate;oblong;elliptic +
thick;5mm;21mm +
dichasial +  and pleiochasial +
distinct +
0.6 cm6 mm <br />0.006 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
lanceolate +, ovate +  and oblong +
slightly smaller +
0.8 cm8 mm <br />0.008 m <br /> (?) +  and 1.2 cm12 mm <br />0.012 m <br /> (?) +
cymose +, 2-branched +  and pleiochasial +
additional +
Rosy-pink or scrub spurge +
20–50 m. +
pistillate +  and staminate +
green +  and yellow +
0.9mm;1.7mm +
subtending +
trapezoidal +  and oblong +
1.9mm +  and 2.5mm +
Xeric oak and pine scrub, mostly on white sands, disturbed habitats. +
axillary +  and terminal +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
obconic +  and campanulate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
caducous +, deciduous +  and persistent +
bractlike +
ovate;oblong +
palmate +  and pinnate +
crenulate +
0.39 cm3.9 mm <br />0.0039 m <br /> (0.68 cm6.8 mm <br />0.0068 m <br />) +
connate;distinct +
Flowering and fruiting spring–summer, rarely fall. +
spreading +  and erect +
globose +  and ovoid oblong cylindric deltoid pyramidal or bottle-shaped +
Endemic +  and Conservation concern +
free +, connate +  and distinct +
unbranched +  and branched +
ascending +  and erect +
15 cm150 mm <br />0.15 m <br /> (45 cm450 mm <br />0.45 m <br />) +
deciduous +  and persistent +
0.33 cm3.3 mm <br />0.0033 m <br /> (?) +  and 0.36 cm3.6 mm <br />0.0036 m <br /> (?) +
Euphorbia rosescens +
Euphorbia sect. Nummulariopsis +
species +
4-7 times 2-branched +  and pleiochasial +
7 cm70 mm <br />0.07 m <br /> (16 cm160 mm <br />0.16 m <br />) +
10 +, 9 +, 8 +, 7 +  and 6 +