Commelinaceae, the Spiderwort Family

Leafy-stemmed herbs; flowers with 3 sepals, 3 petals, and 6 stamens, lasting but a single day; petals blue.

1a. Stamens 6; petals all equal (Spiderwort) — 2.
1b. Perfect stamens 3, sterile stamens 3; two of the petals larger than the third (3-6 dm. high; summer)	Day-flower, Commelina virginica.
2a. Sepals villous (3-10 dm. high; late spring)	Spiderwort, Tradescantia virginiana.
2b. Sepals glabrous, or with a tuft of hairs at the apex (4-10 dm. high; late spring)	Spiderwort, Tradescantia reflexa.