• Artist George Catlin recorded the quarrying activity at the pipestone quarries in 1836

    Pipestone

    National Monument Minnesota

Freshwater Plants

Swamp Milkweed

Swamp Milkweed

NPS, B. Hummel

Approximately thirty-five species of freshwater plants reside in the the waters and wetlands of Pipestone National Monument. Arrow-heads, sedges, and allegheny monkey flowers are among a few of those species found within the Monument's aquatic environments. Many of the surveyed freshwater plants which occur at the Monument are listed in the table below.

Many of these species are at risk from the spread of non-native Reed Canary grass which forms thick mats of vegetation in wet areas and quickly outcompetes and replaces native water plants.

Family
Common Name Scientific Name
Marsilea
Hairy pepperwort Marsila vestita
Najadacea
Leafy Pondweed Potomogetom foliosus
Alismataceae
Arum-leaf Arrowhead Sagitaria cuneata
Lemnaceae
Duckweed Lemna Minor
Polygonaceae
* Water Pepper Polygonum hydropiper
Dotted Smartweed Polygonum punctatum
Ceratophyllaceae
Coontail Ceratophyllum dermersum
Ranunculaceae
Yellow Water Crowfoot Ranunculus flabellaris
Water Crowfoot Ranunculus longirostris
Cursed Crowfoot Ranunculus scleratus
Brassacaceae
Fernald's Yellow Cress Rorippa palustris
Callitrichaceae
Vernal Water Starwort Callitriche palustris
Schrophulariaceae
Hedge Hyssop Gratiola neglecta
Monkey Flower Mimulus ringens
Cyperaceae
Spikerush Elaeocharis obtusa
Wooly Sedge Carex lanuginosa
Strict Meadow Sedge Carex stricta
Heavy Sedge Carex gravida
Fox Sedge Carex vulpinoidea

* denotes exotic species

Did You Know?

The Three Maidens

The Three Maidens are actually granite glacial "erratics" moved thousands of years ago to Pipestone National Monument by the glaciers originating in Canada. More...