OregonFlora species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Euphorbia crenulata

Euphorbia peplidion

western wood spurge
Habit Herbs or subshrubs annual or biennial, 1.5–5 dm; stems erect, glabrous.
Leaves

elliptic to spatulate, 10–35 mm × 4–12 mm;

margins entire to slightly crenate;

tips obtuse to acuminate;

surfaces glabrous; lower leaves alternate, sessile or with minute petioles; upper and floral leaves opposite or whorled, sessile.

Inflorescences

involucres bell-shaped, 2–3 mm;

glands 2-horned.

Fruits

oblong, 3–3.5 mm.

Seeds

round to oblong, 1.5–2.5 mm, with reticulate pitting.

Euphorbia crenulata

Euphorbia peplidion
Distribution
[WildflowerSearch map]
[BONAP county map]
[BONAP county map]
Discussion

Dry areas. Flowering Apr–Jul. 0–1600 m. Casc, CR, ECas, Est, Sisk, WV. CA, NV; AZ, CO. Native.

Euphorbia crenulata greatly resembles the European native E. peplus. They differ only in seed pitting characteristics and lower leaf petioles. Their genetic affinity is worthy of study.
Source Flora of Oregon, volume 2, page 645
Stephen Meyers
Sibling taxa
E. cyparissias, E. dentata, E. esula, E. helioscopia, E. lathyris, E. myrsinites, E. oblongata, E. peplus, E. spathulata
E. crenulata, E. cyparissias, E. dentata, E. esula, E. helioscopia, E. lathyris, E. myrsinites, E. oblongata, E. peplus, E. spathulata
Web links 
Unless otherwise noted, all data comes from OregonFlora.



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in OregonFlora yet, or it's listed under a synonym.)

Choose a data source: Flora of North America, OregonFlora

The species comparison tool is brought to you by:
Northwest Wildflowers