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Use "thecae" in a sentence
"Again, ferns are superior to mosses in this, that in many cases the male influence is exerted directly on the parts that become the thecae, which is not the case in mosses."
"No one can look at a young pinnula at this epoch and observe the evident capitation of each ramentum, the inflexion of its apex, so that the head is brought into contact with the frond, without suspecting that they have the same relation of _cause_ to the appearance subsequently of the thecae or capsules."
"The noninfectious inflammation of bursae and thecae usually result from contusions or strains and generally run their course without becoming infective in character, where vitality and resistance of the subject are normal."