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Photographer: Flora.cyberia
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| Status: | Introduced - adventive; potentially invasive |
| Plant: | erect, biennial, up to 8' tall forb; stems green with purple spots, freely branched, and hollow; all parts deadly poisonous |
| Flower: | white, 5-parted; inflorescence of many 2"-3 1/2" mostly terminal umbels often with 2-4 together from the top stem node, with age the side umbels overtop the central one; blooms June-Aug. |
| Fruit: | dry, splitting into 2 seeds, - fruit: seed: |
| Leaf: | not clasping the stem, 8"-16" broadly-triangular to ovate in outline, 3-4 times pinnately-divided, toothed |
| Habitat: | disturbed sites |
| (Glossary) |
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