Jesup’s Milkvetch
This federally endangered wildflower survives only on a few ice-scoured ledges beside the Connecticut River in Vermont and New Hampshire.
Artwork inspired by Sabra Field
Jesup’s milkvetch grows in cracks and pockets on steep riverbank ledges where spring ice and floods suppress competing vegetation. It is a short-lived perennial in the pea family, producing divided leaves and pale purple flowers within an exceptionally narrow Connecticut River range.
Its apparent harsh habitat is finely balanced: dams alter water levels and ice, invasive plants crowd ledges, trampling breaks stems, and climate can change disturbance timing. Conservation includes monitoring, seed banking, and carefully establishing additional populations. Exact occupied ledges should remain private.
- Range
- Connecticut River ledges
- Family
- Pea family
- Status
- Federally endangered
Quick guide
- Look conceptually
- Learn the ice-scour zone before seeking flowers.
- Protect
- Never climb onto a known occupied ledge.
Understand a plant built around river disturbance
- Leaves
- Several small leaflets line each compound leaf.
- Flowers
- Pale violet pea-shaped blooms form a short cluster.
- Rock
- Plants occupy cracks in steep ledges near the flood-and-ice zone.
- Rarity
- Location and expert documentation are indispensable to identification.
Good to know
Several milkvetches share similar flowers. Because this variety is both extremely rare and location-bound, a casual photograph should be reported to botanists rather than confidently labeled online.
Notice these
- Pinnate leaves
- Pale pea flowers
- Ice-scoured ledge