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NZ Plants
Plagiochasma rupestre
Family: Aytoniaceae
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Plant
J Braggins
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Thallus dorsal surface, margin with ventral scales
L Jensen
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Thallus, dorsal surface with minute pores
L Jensen
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Thallus, ventral surface with scales and rhizoids
L Jensen
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Ventral scales with triangular appendages
L Jensen
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Male and female receptacles
L Jensen
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Receptacles
L Jensen
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Male receptacle with antheridia
L Jensen
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Female receptacle, post fertilization sporophyte with immature sporangia on short stalk
L Jensen
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Ripening sporangia at tip of fully elongated stalk
L Jensen
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Base of sporophyte stalks with one male receptacle in background
L Jensen
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Tip of sporophyte stalk with three capsules.
L Jensen
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Plagiochasma rupestre has a distinctive bluish-green, branching thallus with purplish margins. The dorsal surface contains minute epidermal pores which are bounded by a ring of 4-5 cells. The ventral surface has two types of rhizoids as well as unusually well developed, deep crimson scales which exhibit a considerable variety in form and structure. Female and male gametangia are borne in receptacles on the dorsal thallus surface.
Widespread in New Zealand in on different soils, rock and stonework in exposed to shaded locations.
