Rhachilla

• (n.) A branch of inflorescence; the zigzag axis on which the florets are arranged in the spikelets of grasses.
Found on http://thinkexist.com/dictionary/meaning/rhachilla/

Rhachilla

Rha·chil'la noun [ New Latin , from Greek 'ra`chis the spine.] (Botany) A branch of inflorescence; the zigzag axis on which the florets are arranged in the spikelets of grasses.
Found on http://www.encyclo.co.uk/webster/R/74
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