|flameflower, flower-of-an-hour, prairie fame-flower, rough seeded fame-flower|
The following Participating Institutions are custodians for this species in the CPC National Collection:
The Holden Arboretum
The conservation of Talinum rugospermum is fully sponsored.
Lindsey Parsons contributed to this Plant Profile.
This species is of conservation interest as much because it is part of the Karner Blue Butterfly habitat as it is due to its own rarity. This flameflower is thought to be part of the flora of the Great Plains having spread by long distance post-Pleistocene dispersal to become disjunct in the Midwest in the distribution we see today. It can produce flowers any time between June and August depending on where the plant is within its range with each pink flower opening one day only and strictly in the afternoon. These flowers are attractive enough that gardeners use them in rock gardens despite their ephemeral nature. This species is unusual among threatened plants in that it appears to benefit from minor forms of anthropogenic forms of disturbance. Vehicular and foot traffic can sometimes replace the natural disturbances of fire and erosion that humans now suppress. This is a rosette forming species, that has less than a dozen pink flowers. Pink flowers open on only one day in July or August, and strictly in the afternoon. They require light to germinate. Seedlings can emerge from up to 72mm of sand covering the seeds, and grow slowly. Doesn't colonize old fields or roadsides if other prairie or weedy species are present. Plant is shade intolerant and cannot survive in canopy conditions.
Distribution & Occurrence
Found in open, Exposed sites with minimal competition from other species. Likes xeric prairies, sand barrens, rocky outcrops, gravel river terraces, old fields, trail edges, openings in sandy woods, and margins of sand blows. Also inhabits black oak or jack pine barrens with shifting sand dunes along the Mississippi River. Prefers sand dunes, sandy bluffs, sand blowouts, the sides and tops of dunes, and sparsely vegetated flat areas.
|39 populations in 12 counties in IL|
Conservation, Ecology & Research
Disturbance of soil by ATV and tanks
Fire suppression (WDNR 1999)
Insect herbivory (ILDNR 2002)
Shading by Black Locust (ILDNR 2002)
At a site in Illinois, the presence of Talinum rugospermum increased after wildfire (Cochrane 1993).
Pavlovic has found that the adults are tolerant of fire, though seedlings are more vulnerable (1995). Plants have been observed to be killed by fire, presumable because the buds of next year's growth are at the soil surface (Pavlovic 1989).
(all above references from an article at (WIDNR 1999))