Centaurea nigia. Flowers
- Negative number
- 00618
- Lantern slide number
- 00399
- Locality
- Spring Valley, NY
- Date
- 03/25/1911
- Historical Name
- Centaurea nigra
- Current Name
- Centaurea nigra
- Common Name
- Black knapweed; Lesser knapweed
- Photograph by
- E.M. Kittredge
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