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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  Crotalaria sagittalis L. image
Photographer: J. Carroll           

J. Carroll
Family Fabaceae
Crotalaria sagittalis L.
arrowhead rattle-box, rattle-box, weedy rattle-box
Crotalaria: from Greek crotalon, meaning "rattle," referring to loose seeds inside inflated pod
sagittalis: from Latin meaning "like an arrowhead," for shape of stipules of upper leaves
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Special Concern
Plant: erect, annual, 4"-16" tall, hairy forb
Flower: yellow, 5-parted, 1/8"-1/2" long; inflorescence with 2-4 short-stalked flowers per cluster (raceme); blooms June-Sept.
Fruit:oblong, inflated, and mostly stalkless pod
Leaf:hairy, almost stalkless, undivided, linear to lance-shaped
Habitat: dry; disturbed sites

More Information Natural Communities Herbarium Specimens
All Crotalaria list Google- Images or Text
Crotalaria fruticosa Mill.
Crotalaria sagittalis L. var. blumeriana Senn
Crotalaria sagittalis L. var. fruticosa (Mill.) Fawc. & Rendle
Crotalaria sagittalis L. var. oblonga Michx.

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