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flat-top whiteweed
Scientific Name: Ageratum corymbosum
Family: Asteraceae
Category: Dicot
Growth: Subshrub, Forb/herb
Duration: Perennial
Other Names:
Ageratum corymbosum: Flat-top Whiteweed
Ageratum corymbosum, commonly known as Flat-top Whiteweed, is a perennial subshrub belonging to the genus Ageratum.
Considerations for Pets
- As a subshrub, Ageratum corymbosum has the potential to grow to a height of 30-100 cm.
- The plant's stems can be erect to basally decumbent.
Taxonomy and Nomenclature
- Scientific Name: Ageratum corymbosum Zuccagni ex Pers.
- Kingdom: Plantae
- Taxonomic Rank: Species
- Family: Asteraceae (implied, through mention of astrinių)
- Synonyms:
- Ageratum guatemalense M.F. Johnson
- Ageratum corymbosum var. jaliscense B. L. Robinson
- Ageratum salicifolium Hemsley
- Ageratum strictum Hemsley
- Common Names:
- Flat-top Whiteweed
- Flattop
- Butterfly Mist
- Whiteweed (in the USA)
Morphology and Growth
- Ageratum corymbosum is a perennial or subshrub, typically growing to a height of 30-100 cm.
- The plant has fibrous roots.
- Stems can be erect to basally decumbent, covered in fine hairs (puberulent) or minutely strigoso-hispid.
- Leaf blades are ovate.
- The plant bears 4-18 flower heads arranged in showy, flat-topped clusters.
Distribution and Habitat
- Observed in Inyo.
- Suitable for planting in vases with varying watering needs.
Quirky Facts
- There is a "snowcapped" variety of Ageratum with white tops and blue flowers.
Further Information
- Discover Life offers a page about the biology, natural history, ecology, identification, and distribution of Ageratum corymbosum.
- Information can also be found at Integrated Taxonomic Information.
- NatureServe provides trusted information.
- IRMNG recognizes this species.
- Flora of North America Vol. 21 provides further information.