What's blooming in the meadow?

Euphorbia marginata (Snow-on-the-Prairie)

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Echinacea purpurea (Purple coneflower)

Sabatia campestris (Meadow pinks)

Asclepsis tuberosa (Butterfly weed)

Spiranthes sp. possibly cerna (Ladies Tresses)

Ascelpias sp. possibly oenotheroides (Hierba de Zizotes)