Winterthur is the legacy of Henry Francis du Pont, American, 1880-1969.
Black cohosh, bugbane, fairy candle (Actaea racemosa), native to a very large area of Canada and the United States
Black cohosh shoot up in mid-June. They are among the natives with a fussy reputation: they may or may not take hold where they have been planted.
They are interplanted in the Azalea woods with martagon lilies.
Martagon lilies are deadheaded when their flowering is done. But, like peonies, I do not believe they reflower.
And the cohosh begin to bloom.
They are easily four foot high. To reach the sun because the high canopy trees are in leaf and there is less sun reaching the ground now.
When they flower, they do so from the base of the flowerhead up to its tip.
No petals or sepals. Just elongated stamens. Like little starbusts.
The Azalea woods have done their flowering for the year, if I am not mistaken.
You head out to the open fields. Flowers will be in bloom there until the cold comes.