Blue-purple flowers  Leaves alternate

Mertensia virginica

Muscari botryoides

Nuttallanthus canadensis

Nuttallanthus texanus

Oxalis violacea

Passiflora incarnata

Phacelia bipinnatifida

Phacelia gilioides

Phacelia hirsuta

Phacelia purshii

Polemonium reptans

Polygala incarnata

Pontederia cordata

Psoralea psoralioides

Psoralea tenuiflora

Pueraria lobata

Scilla siberica

Sisyrinchium campestre

Solanum dulcamara

Specularia biflora

Specularia leptocarpa

Specularia perfoliata

Symphyotrichum drummondii

Tradescantia ernestiana

Tradescantia ohiensis

Tradescantia subaspera

Tradescantia virginiana