Evolvulus nuttallianus Roem. & Schult.
Family - Convolvulaceae
Stem - Stems prostrate to nearly erect, to 20 cm, densely long-hairy.
Leaves - Alternate, simple, entire, linear to elliptic, both surfaces densely long-hairy.
Leaves (and fruits).
Flowers - Axillary, actinomorphic, hypogynous, more or less sessile, subtended by two bracts. Sepals 4-5 mm, narrowly lanceolate, densely hairy. Corollas broadly funnelform, 5.0-7.5 mm long, pale lavender. Stamens 5. Pistil 1, of two fused carpels, each usually with 2 ovules, densely hairy. Styles 2, each distally bilobate with 2 stigmas.
Fruit - Ovoid capsules, 1 or 2 locular, with 1-2 seeds.
Flowering - April - June.
Habitat - Glades, upland prairies, openings of dry upland forests.
Origin - Native to the U.S.
Other info. - This diminutive species is found in the southern half of the state. The flowers are of a pastel shade and the plant is easily overlooked, but it is a real treat up close. I have observed some indication that flowering may be stimulated by recent rainfall. Look for it on dry upland gladey prairies and power line cuts.
Photographs taken at Danville Conservation Area, Montgomery County, MO, 6-27-2017, and at St. Joe State Park, St. Francois County, MO, 5-17-2018 (SRTurner).