Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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  Arabis drummondii A.Gray image
Photographer: from USDA Plants website           
Family Brassicaceae
Arabis drummondii A.Gray
Drummond's rock-cress
Arabis: a Greek word used for "mustard" or "cress," and the Greek word for Arabia, perhaps referring to the ability of these plants to grow in rocky or sandy soils (?)
drummondii: from Thomas Drummond (1790-1835), a Scottish naturalist who like his fellow countryman David Douglas made an ill-fated collecting trip to North America.
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, biennial/perennial forb, mostly hairless
Flower: white, 4-parted, 1/3"-1/2" wide; inflorescence a short cluster (raceme) of stalked flowers; blooms May-Aug.
Fruit:long, thin, flat, straight pods pointing upward on a smooth stalk; seeds in 2 rows
Leaf:stem leaves stalkless, lance-like to oblong, lobed at the base

More Information Natural Communities Herbarium Specimens
All Arabis list Google- Images or Text

Flora of North America (off site)
Arabis connexa Greene
Arabis drummondii A.Gray var. connexa (Greene) Fernald
Arabis drummondii A.Gray var. oxyphylla (Greene) M.Hopkins
Arabis oxyphylla Greene
Boechera drummondii (A.Gray) A.Löve & D.Löve
Erysimum drummondii (A.Gray) Kuntze
Turritis drummondii (A.Gray) Lunell

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