(1) These weeds are common in isolated areas of Montana. Management criteria will require eradication or containment of these weeds where less abundant. Management shall be prioritized by local weed districts:

(a) Tansy ragwort (Senecio jacobaeaˌ Jacobaea vulgaris);

(b) Meadow hawkweed complex (Hieracium caespitosumˌ H. praealtumˌ H. floridundumˌ and Pilosella caespitosa);

(c) Orange hawkweed (Hieracium aurantiacumˌ Pilosella aurantiaca);

(d) Tall buttercup (Ranunculus acris);

(e) Perennial pepperweed (Lepidium latifolium);

(f) Yellowflag iris (Iris pseudacorus);

(g) Eurasian watermilfoil complex (Myriophyllum spicatum and M. sibericum);

(h) Flowering rush (Butomus umbellatus); and

(i) Common buckthorn (Rhamnus cathartica).

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