serpulae

He must recollect that every indentation, every twist of stony serpulae or fluting of the zoophyte catches the light and divides and splinters it into radiance, burning with a fringe of silver fire or flashing steel.

Lippincott's Magazine of Popular Literature and Science Volume 12, No. 28, July, 1873 Various

Its front is carved in elaborate tracery and crusted with serpulae, looking like the fret-and flower-work that covers Saracenic architecture.

Lippincott's Magazine of Popular Literature and Science Volume 12, No. 28, July, 1873 Various

Near the camp, on thick ice, were several large blocks of granite which had floated out from the shore and lay each in its pool of thaw-water, covered with serpulae and lace coral.

The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 Douglas Mawson 1920