What's the difference between apothecium and pelta?

Apothecium

Definition:

• (n.) The ascigerous fructification of lichens, forming masses of various shapes.

Example Sentences:

Pelta

Definition:

• (n.) A small shield, especially one of an approximately elliptic form, or crescent-shaped.
• (n.) A flat apothecium having no rim.

Example Sentences:

• (1) At the latter, a pelta consisting of horizontal microtubulus surrounding the kinetoplats from which started the flagella was also found.
• (2) The anterior end of the cell had a blepharoplast complex which consisted of three parts, i.e., periflagellar canal, C-shaped structure of the pelta in the wall of periflagellar canal and five blepharoplasts.
• (3) The interphase microtubular pattern, characterized by an axostyle, a pelta, four anterior flagella, and a recurrent flagellum, displayed remarkable changes at the onset of mitosis: the axostyle disappeared, and two pole bodies connected by a short spindle became evident; chromosomal fibers arose while pole-to-pole fibers elongated.
• (4) A scanning electron microscope (SEM) study of Hypotrichomonas acosta (Moskowitz), Trichomonas vaginalis Donné, Pentatrichomonas hominis (Davaine), and Tritrichomonas foetus (Riedmüller) provided new information about the structure of the periflagellar canal; emergence of the flagella from the cell body; structure of the undulating membrane; and position, shape, and size of the pelta.