PROTECTING WISCONSIN'S BIODIVERSITY

 
 
   
 
Scientific Name Common Name Global Rank State Rank Federal Status WI Status

Short's Rock-cress (Boechera dentata)

rpo_05_19_10_075_2010.jpg

 

 

 

 

8731.jpg

Photo by Ryan O'Connor

 

Counties with Mapped NHI Occurrences

Short's Rock-cress (Boechera dentata), a Wisconsin Special Concern plant, is found in mesic alluvial floodplain forests, on very steep, usually cool slopes in southern mesic forests and moist sandstone cliffs. It is often found in areas with little competition such as moss-covered cliffs, boulders, or bases of large trees, or in areas with exposed soils like steep, eroding forested slopes or areas adjacent to trails. Blooming occurs throughout May, fruiting occurs throughout June. The optimal identification period for this species is early-May through early-June.

Arabis dentata, Arabis dentata var. phalacrocarpa, Arabis perstellata var. shortii, Arabis shortii, Arabis shortii var. phalacrocarpa, Iodanthus dentatus

 
 
 

Short's rock-cress is an erect forb, 20-50cm tall, with a weak stem thinly covered with forked hairs. Its flowers have white petals that are 2-3mm long and barely emerge from the sepals, that are well separated in a terminal raceme. Its fruit are elongate slender pods 1.5-3cm x 1mm, with sparsely covered with hairs that are widely spreading and borne at approximately right angles to the stem. The wingless seeds develop in one row. Its leaves are sharply toothed, roughly oblong shaped and 2-5cm long with bases clasping the stem. The surfaces are covered with small hairs, those on the underside being star shaped (stellate).

It can be distinguished from Arabis hirsuta, which has petals 3-9mm in length, fruits erect, and stem hirsute at least near the base.

Blooming occurs throughout May, fruiting throughout June.

Biennial (may be perennial). The optimal identification period for this species is early-May through early-June.

Associated species include Acer saccharinum, A saccharum, Ulmus americana, Celtis occidentalis, Arisaema dracontium, Fraxinus pennsylvanica, Quercus rubra, Tilia americana, Impatiens capensis, and Saxifraga pensylvanica.

Short's rock-cress is found in the rich, most soils of mesic alluvial floodplain forests, on very steep, usually cool slopes in southern mesic forests, and moist sandstone cliffs. It is often found in areas with little competition such as moss-covered cliffs, boulders, or bases of large trees, or in areas with exposed soils like steep, eroding forested slopes or areas adjacent to trails.

Avoid known individual plant locations and conduct operations elsewhere when they are least likely to cause damage. Ideally, this would involve frozen, snow-covered ground. However, in areas of the state where frozen conditions are unreliable, very dry soils late in the growing season might be the best available alternative. Consult with a biologist, if needed.

Avoid broadcast spraying of herbicides and use care with spot spraying.

Avoid direct disturbance to sensitive microsites such as seeps, cliffs, and moss-covered boulders.

Follow BMPs, especially around streams and use care near ravines, steep slopes, cliffs, rock outcrops, etc.

Buffer management around unique microhabitats such as ephemeral ponds, seeps, etc.

Species of Greatest Conservation Need (SGCN) are associated with habitats (or natural communities) and places on the landscape. Understanding relationships among SGCN, natural communities and ecological landscapes help us make decisions about issues affecting SGCN and their habitat and how to respond. Download the Wildlife Action Plan association score spreadsheet to explore rare species, natural communities and ecological landscape associations

Conservation actions respond to issues or threats, which adversely affect species of greatest conservation need (SGCN) or their habitats. Besides actions such as restoring wetlands or planting resilient tree species in northern communities, research, surveys and monitoring are also among conservation actions described in the Wisconsin Wildlife Action Plan because lack of information can threaten our ability to successfully preserve and care for natural resources.