Achillea millefolium
Dog daisy, dog fennel, common yarrow, gordaldo, nosebleed plant, old man's pepper, devil's nettle, sanguinary, milfoil, soldier's woundwort, thousand-leaf, thousand-seal
Has one to several stems (0.2 to 1m tall) and has a rhizomatous growth form. Leaves are evenly distributed along the stem, with the leaves near the middle and bottom of the stem being the largest. The leaves have varying degrees of hairiness (pubescence). The leaves are 5-20cm long, bipinnate or tripinnate, almost feathery, and arranged spirally on the stems. The leaves are cauline and more or less clasping. The inflorescence has 4 to 9 phyllaries and contains ray and disk flowers which are white to pink. There are generally 3 to 8 ray flowers that are ovate to round. Disk flowers range from 15 to 40. The inflorescence is produced in a flat-topped cluster.
Water parsnip, western water hemlock, spotted water hemlock.
Native to the northern hemisphere; now widespread
Achillen, monoterpenes, and sesquiterpene lactones; causes a disagreeable taste in meat and milk
Cats, dogs, horses, cattle, sheep
Polyuria, vomiting, diarrhea, dermatitis
Rarely causes severe allergic skin rashes, skin photosensitivity
None
History
Antihistamines
Good; very rarely (if at all) fatal
Remove plants and prevent skin contact with them
Tuesday, 22 February 2011
