Cyperus congestus
Dense Flat-sedge
Introduced to Hawaiʻi
Photo: (c) Marco Schmidt, some rights reserved (CC BY-NC-SA), uploaded by Marco Schmidt (iNaturalist)
6
Bishop specimens
0
Type specimens
1911
First collected
1984
Last collected
No recent record
Last seen alive in Hawaiʻi
In the Library
Bishop Museum publications whose pages name Cyperus congestus, most mentions first.
2019
Hawaiian naturalized vascular plants checklist (February 2019 update)Imada, C. · Contribution to the Hawaii Biological Survey · 3 pages
2025
Imada, C.T., Faccenda, K., Thomas, M.K., Gallaher, T., Oppenhemier, H., Kennedy, B. & Kalei, A. (eds.) Hawaiian native & naturalized vascular plants checklist (2025 update). 780 pp. [published online 6 November 2025]· Contribution to the Hawaii Biological Survey · 2 pages
Two centuries of collecting
1910s1980s
The oldest Bishop specimen was collected in 1911 by Blakely, W.F. (Port Jackson).
From the collection
