Euphorbia heterophylla |
Euphorbia cyparissias |
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cypress spurge |
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Habit | Herbs or subshrubs perennial, 1.5–3(4) dm; stems erect, glabrous. | |
Leaves | lower leaves alternate, sometimes appearing whorled, linear, 10–30 × 1–3 mm; margins entire; tips obtuse to acuminate; surfaces glabrous, sessile; floral leaves opposite or whorled, broadly ovate, 0.4–1 cm; margins entire to slightly crenate, sessile. |
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Inflorescences | involucres bell-shaped, 1–3 mm; glands 2-horned. |
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Fruits | oblong, 2.5–3 mm. |
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Seeds | ellipsoid, 1.5–2 mm; smooth. |
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2n | =20, 36, 42. |
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Euphorbia heterophylla |
Euphorbia cyparissias |
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Distribution | ||
Discussion | Disturbed areas. Flowering May–Aug. 0–1600 m. BW, CR, ECas, WV. CA, ID, WA; throughout North America; Asia, Europe. Exotic. |
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Source | Flora of Oregon, volume 2, page 645 Stephen Meyers |
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Sibling taxa | ||
Web links |
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