blue-buttons, field scabiosa
[Scabiosa arvensis L.]
Etymology: Knautia: dedicated to Christen Knault (1654-1716), Saxon physician and botanist
Plants: erect, perennial, 1'-3' tall forb; stems not prickly
Leaves: lower leaves coarsely toothed, upper deeply cut
Flowers: blue to purple, 4-parted; inflorescence a dense, domed, long-stalked cluster 1/2"-1 1/2" thick surrounded by bracts about equal to the head; blooms June-Sept.
Conservation Status: Introduced - locally established
USDA Plants Database: Federal Distribution and detailed information including photos USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc.