Nemastylis geminiflora Nutt.
CC = 10
CW = 5
MOC = 10
SRank = S2
Family - Iridaceae
Habit - Perennial forb with ovoid or subglobose bulbs.
Stems - Ascending to erect, to 40 cm, terete.
Leaves - 1-3 per aerial stem, linear, to 11 mm wide, parallel veined, folded longitudinally near base, becoming pleated along veins or flat toward tips.
Inflorescences - 1-3 per aerial stem from upper leaf axils, long stalked, each with 1-2 flowers enclosed by a pair of herbaceous spathelike bracts.
Flowers - On stalks 12-35 mm long. Perianth spreading, light blue to bright blue, usually with a well-developed white or light yellow "eye" at the base, the sepals and petals similar and fused at the bases, elliptic with the tips rounded or bluntly pointed, the petals slightly shorter than the sepals. Stamens 3, the filaments free or fused only at the base, the anthers 0.6-1.2 cm long, becoming tightly spirally twisted after shedding the pollen. Style short, deeply 3-lobed, each lobe again deeply 2-lobed, linear.
Fruits - Capsules 10-20 mm long, obovoid, tapering at the base, abruptly and broadly rounded or flattened at the tip. Seeds 2.0-2.5 mm long, broadly obovoid-angular, tapering to a short, beaklike tip at 1 end, dark brown.
Flowering - April - May.
Habitat - Glades and prairies on calcareous substrate.
Origin - Native to the U.S.
Lookalikes - N. nuttallii.
Other info. - This plant has got to be one of the most strikingly beautiful of all Missouri's wildflowers. The three bright yellow anthers provide an attractive contrast to the delicate blue of the perianth. At the right place and time, the ground will be carpeted with hundreds of these bloom, but they don't last long. The plant is not common in Missouri, known from only a few widely scattered counties, and is considered imperiled in the state. Beyond Missouri its range extends to only a few other states, mostly to the south.
Photographs taken at St. Joe State Park, St. Francois County, MO, 5-2-2010, 5-31-2010, 4-26-2014, 4-10-2017, and 4-26-2020, and at St. Francois State Park, St. Francois County, MO, 5-5-2010 (SRTurner).