- Plants
- ›Vascular Plants
- ›flowering plants
- ›Dicots
- ›myrtles, evening primroses, and allies
- ›evening primrose family
- ›Ludwigia
Pterocaulon
Pterocaulon is a genus of flowering plants in the sunflower family, native to North and South America and to Australasia. Blackroot is a common name for species native to North America.
The plants are perennial herbs, frequently densely covered with woolly hairs. The generic name means "winged stem," referring to the decurrent leaf bases that give the appearance of wings running down the sides of the stems.
5 branches of this group, most-observed first
Wingleaf Primrose-Willow
speciesLudwigia decurrens
yerba de jicotea
speciesLudwigia erecta
Longleaf Primrose-willow
speciesLudwigia longifolia
Ludwigia major
speciesLudwigia major
Ludwigia filiformis
speciesLudwigia filiformis
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Pterocaulon in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 1647652.