Observations by dambroz

Plants growing on a loess hill prairie. Anthesis seems to have begun 5-7 days previous.

Plants groing mainly in maple-basswood association and on north-facing ravine slopes. Anthesis began 7-10 days ago and is near peak. Some flowers in population have a 4-petal mutation.

Plants growing in scattered location regardless of slope, orientation, or substrate. Anthesis began 7-10 days ago.

Plants growing in scattered location, mainly on the tops of bluffs and ridges. Anthesis has peaked, appears to have 7-10 of bloom left.

Plants growing in scattered clumps on north-facing slopes and ravines. Began anthesis 3-5 days ago. ID verified by use of key to differentiate from A. pachypoda.

Plants are growing in scattered locations regardless of slope, orientation, or substrate. Anthesis seems to have begun 7-10 days previous, has not yet peaked.

Plants growing along bases of north-facing ravines and up steeper north-facing slopes. Anthesis is peaking.

Trees are likely adventitve from nearby landscape plantings. Growing along woodland edge. Anthesis peaking.

Plants growing in scattered locations in small groupings regardless of slope, orientation, or substrate. Anthesis is peaking.

Plants growing on a loess hill prairie. Anthesis is peaking.

Plants growing on a loess hill prairie. Plants have just begun anthesis.

Growing on a loess hill prairie. Plants have just begun anthesis.

Plants growing in scattered locations, regardless of slope, orientation, or substrate. Plants growing in places with a southern aspect are beginning anthesis.

Plants growing in scattered locations through upland forest. Plants on south slopes have completed anthesis. Plants on north slopes are nearing completion of anthesis.

Plants growing on rocky outcroppings. Anthesis seems to have peaked 5-7 days previous. Leaf bases lack the red coloration of D. meadia, the only other member of the genus in the region.

Plants growing mainly on north-facing slopes, near base of bluff and on rocky outcroppings. Plants just beginning anthesis.

Plants growing in small to large colonies regardless of slope or orientation. Anthesis seems to have begun 5-7 days previous.

Plants growing in scattered groupings regardless of slope or orientation. Plants are most abundant on tops of ridges. Anthesis seems to be at its peak.

Plants scattered. Growing regardless of slope or orientation. Anthesis appears to have begun 7-10 days previous.

Growing regardless of slope or orientation. Anthesis seems to have begun 5-7 days previous.

Occuring in scattered patches regardless of slope. Anthesis seems to have begun 5-7 days previous.