Plenty have sprung up particularly in the south half of the east yard. Pungent & clumping.

NOT Nothoscordum bivalve, as http://www.namethatplant.net/plantdetail.shtml?plant=50 maintains there is no onion like odor
waiting for flowers to key out; assume Allium canadense
Allium vineale http://www.namethatplant.net/plantdetail.shtml?plant=56 - nonnative, flat segments to bulbs
  • Young flowerhead enclosed by broad papery bract with long tapering point, per www.plant-identification.co.uk; Bulb composed of segments, flattened on 1 side, enclosed by a membranous coat, per Vascular Flora of the Carolinas.
  • Bulb composed of segments, flattened on 1 side, enclosed by a membranous coat, per Vascular Flora of the Carolinas.
  • Flowers, if present, pinkish, on stalks c 10-20mm long, per www.plant-identification.co.uk
  • Scapes erect; leaves cylindric, hollow, per Vascular Flora of the Carolinas.
  • see more details...
  • Bulb not divided into flat-sided segments; coat fibrous, per Vascular Flora of the Carolinas.
  • The terminal umbel is usually a mixture of bulblets and flowers, per Wildflowers of Tennessee.
  • Umbel erect, globose, to 500-flowered. Flowers urceolate, tepals erect, per Flora of North America.
  • A crook in the peduncle just below the umbel causes it to nod, per Wildflowers of the Southern Mountains.