Hypericum boreale
Northern St. John's-wort
Family Hypericaceae
About
Northern St. John's-wort is a short-lived perennial of North American wetlands with tiny yellow flowers.
Field notes
Morphology
Flowers are yellow and under 6 mm across, single or in small leafy clusters at stem tips, with five narrow blunt petals, three styles and 7–18 stamens. Leaves are opposite, oblong to elliptic and about 1 cm long. Similar to H. majus but with blunter sepals and broader, rounder leaves.
Distribution & habitat
Pacific Northwest, Midwest, Great Lakes and the Eastern Seaboard of the United States, and eastern Canada.
History & etymology
First treated as a subspecies of H. mutilum; Eugene Bicknell raised it to species rank in 1895.
Conservation
Secure globally and nationally, but locally affected by fragmentation and loss of wetlands.
Habitat
- Altitude
- Not recorded
- Altitude class
- —
- Native to
- United States, Canada
- IUCN status
- Least concern
Cultivation
- Difficulty
- Not recorded
Text adapted from Wikipedia, CC BY-SA 4.0.
Crossed H. boreale with another species?Register the cross. If it's not documented yet you'll be the first contributor; if someone already registered it, you'll be taken there to add your photo.