- Bishop's goutweed, Bishop's weed
- A low-growing, herbaceous perennial. Stem erect, branched, 16-40 inches tall. A dense ground cover.
- oblong to ovate
- long petioles on lower leaves
- 9 irregular leaflets
- upper leaves smaller, with short petioles
- leaflets in 3s
- Small, white five-petaled flowers. Arranged in dense umbels 2 to 5 inches wide. Blooms from July to August.
- small, insignificant
- green turning brown
- shady areas, including stream banks
- moist, rich soils
- seeps, floodplains
- moving water
- reproduces vegetatively by stolons
Key ID Features:
- long petioles
- 9 leaflets
- upper leaves in 3s
- white umbels
- Golden Alexander (Zizia aurea) has similar leaves, but a loose yellow inflorescence.
- Canadian honewort (Cryptotaenia canadensis)
- Aniseroot (Osmorhiza claytoni)
- Seen as a variegated form (Variegated Bishop's Goutweed) in landscapes and gardens. With its low creeping nature, Goutweed can completely take over the forest understories, eliminating native plants.
- Planted in Maria Mitchell's garden, and likely elsewhere, but has not yet been reported outside of cultivation on Nantucket.
Growth Form: Herb
Level of Invasiveness for Nantucket: Potential Invasive
Level of Invasiveness for Massachusetts: Invasive
Massachusetts Cultivation Restrictions: importation ban July 2006, propagation ban January 2009