Potamogeton hillii, common name Hill's pondweed, is a species of plant found in North America.[1] It is listed as endangered in Connecticut,[2] Ohio, and Pennsylvania. It is listed as a special concern in Massachusetts and as threatened in Michigan and New York (state).[1]
| Potamogeton hillii | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Alismatales |
| Family: | Potamogetonaceae |
| Genus: | Potamogeton |
| Species: | P. hillii
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| Binomial name | |
| Potamogeton hillii Morong
| |
Commonly found in alkaline waters, Hill's pondweed has a narrow distribution from Wisconsin to western New England (Connecticut, Massachusetts and Vermont).[3]
Description
editThe leaves of Potamogeton hillii tend to be around 20–60 mm, all of which are submerged underwater. The fruit is fleshy and dry but does not split open when ripe. The fruit is also 2.3–4 mm in length and 2–3.2 mm in width. [3] The flower blooms in mid-July through August, fruiting late-July through August. [4]
History
editHill's pondweed was first collected in New York in 1886 in Cayuga Lake near Ithaca. The name honors the Reverend E.J. Hill who discovered it in Michigan in 1880. [4]
References
edit- ^ a b NRCS. "Potamogeton hillii". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 11 April 2021.
- ^ "Connecticut's Endangered, Threatened and Special Concern Species 2015". State of Connecticut Department of Energy and Environmental Protection Bureau of Natural Resources. Retrieved 17 January 2018. (Note: This list is newer than the one used by plants.usda.gov and is more up-to-date.)
- ^ a b "Potamogeton hillii (Hill's pondweed): Go Botany". gobotany.nativeplanttrust.org. Retrieved 2024-05-21.
- ^ a b "Hill's Pondweed Guide - New York Natural Heritage Program". guides.nynhp.org. Retrieved 2024-05-21.
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