|Northern monkshood, Northern wild monkshood|
|Dawn M. Gerlica and Lindsey Parsons|
The following Participating Institutions are custodians for this species in the CPC National Collection:
The Holden Arboretum
The conservation of Aconitum noveboracense is fully sponsored.
Dawn M. Gerlica and Lindsey Parsons contributed to this Plant Profile.
The primary distinctive characteristic of this showy perennial is its large, blue, hood-shaped flowers. A single stem grows from one to four feet in height and may bear several one inch long flowers. The upper sepal is modified into a helmet, which conceals the upper two petals of the flower. The rest of the petals are small or absent. The plant blooms between June and September, with its peak in August. Like many members of the buttercup family, the coarsely-toothed leaves are broad and deeply lobed.
Distribution & Occurrence
- New York
The preferred habitats of this species include algific talus slopes, partially shaded cliffs and streamsides. The most necessary components are high humidity and cool soil conditions by either cold air flow or cold water flow, or both. It grows on either sandstone or limestone. Soil studies at some sites have revealed low available phosphorus levels.
|Iowa 6 counties: Allamakee, Clayton, Delaware, Dubuque, Jackson and Hardin
110 acres of Aconitum habitat, algific slopes, have been purchased by the Fish and Wildlife Service to be included in the Driftless Area National Wildlife Refuge. The Iowa Department of Natural Resources and the Nature Conservancy have also purchased algific slopes to further protect the species. (USGS 2002)
There are about 60 known locations within the states of Iowa and Wisconsin. One Iowa population has about 10,000 individuals (Natureserve 2001)
Wisconsin 5 counties: Grant, Monroe, Richland, Sauk, and Vernon
New York 4 counties total, 3 have confirmed populations: Delaware, Sullivan, and Ulster. 1 county has a probable population that was confirmed more than 20 years ago: Chenango. (Young 2001)
There are 7-9 current populations within New York (Natureserve 2001)
Ohio There are three current populations at two sites within Ohio. In 2001, there were 35 plants counted in Gorge Metro Park and 78 plants counted in Crane Hollow State Nature Preserve. (Windus pers. com. 2002)
Conservation, Ecology & Research
Trampling by humans and livestock (USGS 2002)
Grazing by herbivores (deer, rabbits, woodchucks, slugs)
Competition and shading
Road salt runoff /salt contamination (Faivre 2002)
Dam and reservoir construction
Linhart, Y.B.; Premoli, A.C. 1993. Genetic Variation in Aletes acaulis and Its Relative, the Narrow Endemic A. humilis (Apiaceae). American Journal of Botany. 80, 5: 598-605.
Spackman, S.; Jennings, B.; Coles, J.; Dawson, C.; Minton, M.; Kratz, A.; Spurrier, C.; Skadelandl, T. 1997. Colorado Rare Plant Field Guide. Fort Collins, CO: Prepared for the Bureau of Land Management, the U.S. Forest Service, and the U.S. Fish & Wi