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A B C
  1. pore canal of tetrasporangial conceptacles surrounded by not specialized cells.
  1. chambers of tetrasporangial conceptacles elliptical:
    54-130µm (diam.)
    30-70µm (high)

[ii - germination disc with 12 cells in 2 parallel rows]
Pneophyllum fragile
  1. pore canal of tetrasporangial conceptacles surrounded by specialized cells arranged in filaments (unicellular, free).
  1. chambers of tetrasporangial conceptacles elliptical:
    104-240µm (diam.)
    70-164µm (high)
Pneophyllum caulerpae
  1. pore canal of tetrasporangial conceptacles simple or occasionally with hyaline extrusions.
  1. chambers of tetrasporangial conceptacles: rounded to elliptical:
    52-91µm (diam.)
    30-77µm (high)
Pneophyllum confervicolum
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