Species: Diderma hemisphaericum (Bull.) Hornem.Go Back
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Description:
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SPOROCARPS: scattered, flat, discoid, on a central stalk, 0.6 to 1.2 mm. diam., occasionally sessile and confluent, chalk-white; sporangial wall of two layers on the upper, flat surface; the outer a smooth crust composed of globular lime-granules, 1-3 µm diam., easily separating and breaking away from the more persistent, membranous inner layer; under surface rugose, thickened.

STALK: ochraceous or brownish, 0.2 to 0.8 mm. long, thick, furrowed with wrinkles which are continued over the flat under side of the sporangium, densely cal careous, often seated on a white hypothallus.

COLUMELLA: consisting of the broad, thickened base of the sporangium, reddish or brownish, charged with calcareous deposits, usually in the form of nodules or large rhomboidal crystals.

CAPILLITIUM: of slender, colorless threads, branching and anastomosing, or of violet-brown threads sparingly branched except at the pale extremities.

 
SPORES: pale violet-brown, nearly smooth,
7-9 n diam.
PLASMODIUM: opaque white.
HABITAT: On dead wood.

DISTRIBUTION: Auckland, Mid Canterbury.
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Macro images:
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Diderma hemisphaericumScale bar

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 Scale = 1.25 mm.
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Diderma hemisphaericumScale bar 
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 Scale = 1.25 mm.
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Diderma hemisphaericumScale bar 
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 Scale = 1.25 mm.
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Diderma hemisphaericumScale bar 
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 Scale = 1.25 mm.
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