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ARS Home » Plains Area » Sidney, Montana » Northern Plains Agricultural Research Laboratory » Pest Management Research » Research » Publications at this Location » Publication #395865

Research Project: Biological Control and Habitat Restoration for Invasive Weed Management

Location: Pest Management Research

Title: Noteworthy collections North Dakota

item Gaskin, John
item Whippo, Craig

Submitted to: Madrono
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/28/2023
Publication Date: 3/28/2023
Citation: Gaskin, J.F., Whippo, C.W. 2023. Noteworthy collections North Dakota. Madrono. 69(4). Article 302.

Interpretive Summary: We found a new species of invasive plant in North Dakota: Strigosella africana (African mustard) growing in western parts of the state and in Theodore Roosevelt National Park. These first observations inform weed managers of its presence and allow for early detection and rapid response efforts while population numbers are low in North Dakota.

Technical Abstract: STRIGOSELLA AFRICANA (L.) Botschantzev [= Malcolmia africana (L.) W.T. Aiton] (BRASSICACEAE). —McKenzie Co., Little Missouri National Grassland. 47.60691°, -103.974621°; 697 m; 25 May 2022; John Gaskin 17536 (DSUND), iNaturalist observation 118593906. Plants growing in a seldom-used, two-track dirt road. Approximately 100 individuals were observed in a patch 5 m x 2 m in disturbed, open area. Annual, pink to violet (white) petals, with leaves, stem and fruit densely covered by branched hairs. Associated species: Grindelia squarosa (Pursh) Dunal, Juniperus scopulorum Sarg. and Artemisia frigida Willd.