I couldn't identify it, so I turned it over to the experts at SCNP. Duh! I already identified here - https://365project.org/marlboromaam/365/2021-03-26 SCNP said, "The tubular structures are the fruits that open at the tip and release the tiny seeds. Your pictures are superb! Note that the sepals and stems have numerous tiny sticky glands. Cerastiums are rather common weeds that most people don’t even notice."
