• WordNet 3.6
    • n Cladonia type genus of Cladoniaceae; lichens characterized by a crustose thallus and capitate fruiting bodies borne on simple or branched podetia
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Century Dictionary and Cyclopedia
    • n cladonia A genus of lichens, representative of the family Cladonici. The apothecia are mostly capitate, variously colored (not black), and borne on the vertical portion of the thallus (podetiun). The latter is either simple, and often cup-shaped or funnel-shaped, or very much branched. The branching is shown in the reindeer-moss, Cladonia rangiferina. See reindeer-moss.
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In literature:

Cladonia deformis (L), Hoffen.
"The Long Labrador Trail" by Dillon Wallace
The Cladonia Rangiferina, or Iceland moss, proved very abundant.
"A Labrador Doctor" by Wilfred Thomason Grenfell
Cladonia coccinea; the fructification is in the scarlet knobs, which surround the cups.
"The Elements of Botany" by Asa Gray