Contains 3 accepted taxa overall.
Characteristics
Classification
Citation
AGERATUM Linnaeus, Sp. Pl. 839. 1753.
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TYPE: Ageratum conyzoides Linnaeus Lectotypified by Britton & P. Wilson, Bot. Porto Rico 6: 286. 1925.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Ageratum conyzoides | TROPICAL WHITEWEED | Not Native FACU (NWPL) | ||
| Ageratum houstonianum | BLUEMINK | Not Native FACU (NWPL) | ||
| Ageratum maritimum | CAPE SABLE WHITEWEED | Native Endangered-State |
[Family identification key]
1. Roots woody, only slightly fibrous; plant glabrate to moderately pilose, eglandular; flowering Jul-Jan, rarely Apr
1. Roots strongly fibrous, generally lacking thickened woody roots; plant glandular-punctate or stipitate-glandular 2
2. Leaf blade underside yellow glandular-punctate; phyllaries sparsely pilose to glabrous, eglandular, abruptly tapered at the tip, acuminate; flowering Mar-Oct
2. Leaf blades eglandular; phyllaries densely pilose, stipitate-glandular, gradually tapered in the upper half to the tip, acute; flowering Oct-Apr