Bottle Gentian -- Gentiana andrewsii, flowers never open -- pollinators (usually bumblebees) push into the flower's interior where pollen and nectar are shielded from smaller diners.
'Long live the weeds that overwhelm
My narrow vegetable realm!
The bitter rock, the barren soil
That force the son of man to toil;
All things unholy, marred by curse,
The ugly of the universe.
The rough, the wicked, and the wild
That keep the spirit undefiled.
With these I match my little wit
And earn the right to stand or sit,
Hope, love, create, or drink and die;
These shape the creature that is I.' ~Roethke, "Long Live the Weeds", 1941.