Publication: Fl. Franc. (DC. & Lamarck), ed. 3. 3: 158. 1805.
Origin: Introduced from Europe
selected vouchers: WTU
Notes: Rarely spreading from garden plantings in King Co. Native to the Alps, often on calcareous soils, and here found reseeding into cracks in concrete sidewalks.
Note that authorship (Nathh.) DC is incorrect. From Werner Greuter:
"I assume that the (erroneous!) date 1756 refers to publication of the original Linnean Thesis (defended by Nathhorst), which following Rothmaler's "rediscovery" of these theses has often been accepted as the place of valid publication for the included new names. See Art. 33 Ex. 1 for the rationale for rejecting the 1756 date. "