Within the primine lies the bony crustaceous secundine, which is quite loose, and seems as if it were independent of the primine.
"Journal of an Expedition into the Interior of Tropical Australia In Search of a Route from Sydney to the Gulf of Carpentaria (1848) by Lt. Col. Sir Thomas Livingstone Mitchell Kt. D.C.L. (1792-1855) Surveyor-General of New South Wales"
Thomas Mitchell
Three or four kidney-shaped seeds, the testa thin and crustaceous.
"The Medicinal Plants of the Philippines"
T. H. Pardo de Tavera
Wall of the sporangium a thin membrane with an outer layer composed of minute stellate crystals, or of minute roundish granules of lime; these either lie singly upon the surface, or are compacted into a crustaceous coat.
"The Myxomycetes of the Miami Valley, Ohio"
A. P. Morgan