Oregano - Origanum vulgare
Perennial from creeping rhizomes, 30-70 cm tall. Stems generally simple below the inflorescence except for the axillary fascicles of small leaves; stem and the margins and lower surfaces of leaves loosely hairy. Leaf blades 1.5-3 cm long, mostly ovate or deltoid-ovate, cauline only, margins entire or nearly so, evidently purple-tipped, rather short-petiolate, well distributed along the stem and only reduced toward the inflorescence. Bracts mostly elliptic or rhombic to obovate; calyx 2.5-5 mm long, the lance-triangular or nearly ovate teeth shroter than the tube and generally purplish; corolla ca. 5 mm long (Hitchcock, 1959, Vasc. Pl. Pacific Northwest, Part 4).
Sporadic and relatively infrequently established in parts of western and eastern North America, particularly the New England area (Kartesz 2009).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Mostly as roadside weeds in North America (Hitchcock 1959).
- Additional ReferencesLegend: View Online Publication
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- Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.