I finished off a recent jaunt with these little treasures, not full population anthesis; but, here we have a gorgeous plant regardless and a representation of a hillside population of the Great Larkspur enjoying the soil chemistry of the underlying calcareous substrate of Glenwood Gardens.
Delphinium exaltatum
This species seems to be pollinated by a large slew of species, from hummingbirds and hawkmoths to skippers and solitary bees, it produces a fair amount of seed and does well in any calcareous glade or hillside prairie shading out isn’t relevant yet, major disjunction events occur. Ohio is known for it’s well preserved decent examples of calcareous glade systems that exist in the Edge of Appalachia prairie system (Lynx, Cedar Barrens, Falling Prairie ect.) and a few populations in the Darby Plaines Cedar Glade and Hill Prairie systems of Clark and Greene co. Besides those populations in Ohio the next few populations occur in Pennsylvania down to Louisiana. The other super disjunct populations occurs in a calcareous cedar glade in Missouri in the Ozarks Mountain Range as well as a few populations in Tennessee. There were probably pocket populations occurring at some points during history during the prairie peninsula expansion but it still doesn’t explain why we haven’t seen any examples in WI, IN, IL, or KY which have well known examples of calcareous glades.
I still have not made it into Adams remnants or Clark remnants this summer but I intend to do so this month.










