phyllocladium

from The Collaborative International Dictionary of English v.0.48
phylloclade \phylloclade\, phyllocladium \phyl`lo*cla"di*um\,
   n.; pl. {Phyllocladia}. [NL., fr. Gr. fy`llon a leaf +
   kla`dos a sprout.] (Bot.)
   A flattened stem or branch which more or less resembles a
   leaf, and performs the function of a leaf as regards
   respiration and assimilation.

   Syn: cladode, cladophyll, phylloclad.
        [1913 Webster + WordNet 1.5]
    

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