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23.
Dactylina madreporiformis [name from a genus of tropical
corals]. |
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A curious
fruticose lichen of the alpine tundra. The thallus is erect,
hollow, and with a papery consistency. Apothecia are extremely
rare. The lobes on this species are cylindrical. On another
species, found in the Arctic (D. arctica), the thallus is
broader and inflated, like a mitten. Our species is relatively rare
in the Arctic and principally a plant of the temperate mountain
ranges. |
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24.
Cladonia cariosa [decayed]. |
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Cladonia is a unique genus, in which the thallus is
divided into two distinct parts. At the base, the thallus consists
of flattened squamules with an upper and lower side. Arising from
these are erect, cylindric stalks (podetia) which bear the
apothecia at their tips. Apothecia may be red, brown, or rarely
tan. This species has squamules on the podetia, and brown
apothecia. |
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