Date: June 14, 2009. Location: Kent Park(map)
| Classification Hierarchy | |
| Kingdom | Plantae |
| Subkingdom | Tracheophyta |
| Superdivision | Spermatophyta |
| Division | Magnoliophyta |
| Class | Magnoliopsida |
| Subclass | Asteridae |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Achillea |
| Species | Achillea millefolium |
Date: June 14, 2009. Location: Kent Park(map)
Scientific Name: Achillea millefolium. Achillea in honor of Achilles; millefolium -thousand leaf, probably in reference to the many leaflets of the deeply divided leaves.
Common Name: Common Yarrow
Origin: Some infra-taxa Native and some Introduced
Notes: Achillea millefolium is morphologically variable. More than 50 names have been used to describe separate species or varieties of a single species.
Additional references: 1, 2, 3, 4, 5, 6, 7, 8, 9.
Flowers: May; Inflorescence, heads 10 to many in simple or compound corymbiform arrays. Phyllaries in 2 or 3 layers. Ray florets usually 5; corollas white or light pink to purple. Disk florets 2-20 per head; corollas white. Fruit: cypselae 1-2 mm long with margins winged.
Leaves: atlernate, sessile to petiolate, compound - two or three times pinnatifid.
Glossaries of botanical terms: 1, 2, 3, 4, 5, 6.
