| Eupatorium album | |
|---|---|
 | |
| Eupatorium album var. album, 1913 botanical illustration | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Eupatorium |
| Species: | E. album |
| Binomial name | |
| Eupatorium album | |
| Synonyms [2] | |
Synonymy
| |
Eupatorium album, the white thoroughwort or snowy white eupatorium, is a herbaceous perennial plant in the family Asteraceae native from the eastern and southern United States, from eastern Texas to Connecticut, inland as far as Indiana. [3] [4]
Contents
As with other members of the genus Eupatorium , Eupatorium album flowers with large numbers of small white heads. The flower heads have 4-5 disc florets each, but no ray florets. [5] It flowers from late June to October. [6] The plant grows 50–100 cm (20–39 in) tall, [3] making it one of the shorter Eupatorium species. [5]
Eupatorium album is capable of hybridizing with other Eupatorium species including Eupatorium sessilifolium and Eupatorium serotinum . [3] Its appearance is similar to Eupatorium altissimum , but differs in that the bracts (located at the base of the flower head) taper to a long point. [7]
Eupatorium album grows in dry, open areas such as power lines, old fields, and eroded slopes. It will not grow under a shady canopy, but can be found in some open woods such as pine barrens. [7] It is common in fire-dependent habitats, and increases in abundance in response to fire disturbance. [8]
- Varieties [3]
- Eupatorium album var. album - most of species range
- Eupatorium album var. subvenosumA. Gray - Delaware, District of Columbia, New Jersey, New York
- Eupatorium album var. vaseyi(Porter) Cronquist - from Alabama to Pennsylvania
