Perhaps they came from an area that has summer temp. Thus now best to get shipments with ice packs or wait until the temp decreases.
Brightwell aquatics Floriaxis
may bring them back to life. It helped with some plants that are sensitive to shipment.
Thanks for the suggestion but, man, I am not sure it's worth the effort to revive that clump of worts. It will violate my low maintenance endeavor!
I have it in a cup of water, and it hasn't improved but also hasn't gotten any worse.