a small or secondary rachis, as the axis of a spikelet in a grass inflorescence.
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How to use rachilla in a sentence
The third and the subsequent glumes are regularly arranged on the slender rachilla alternately in two rows.
This prolonged rachilla sometimes bears a minute glume, which is of course rudimentary.
In Eriochloa it is reduced to a minute ridge lying just close to the swollen ring-like joint of the rachilla.
The rachilla is jointed just above the empty glumes and it is produced or not beyond the flowering glumes.
The rachilla is produced behind the palea and it ends in two small teeth, one being slightly larger than the other.
British Dictionary definitions for rachilla
(in grasses) the short stem of a spikelet that bears the florets
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for rachilla
The stalk that bears the florets in the spikelets of grasses and similar plants, such as rushes and sedges. The rachilla often has a zigzag shape, with florets at each point at which the orientation of the rachilla turns.
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