- a small or secondary rachis, as the axis of a spikelet in a grass inflorescence.
Origin of rachilla
1835–45; < New Latin, diminutive of rachis rachis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for rachilla
It is attached to the axis of the flower and its back is towards the rachilla.A Handbook of Some South Indian Grasses
Rai Bahadur K. Ranga Achariyar
The caryopsis is very narrow, and the rachilla long and feathered with hairs.
Rachilla short, flattened and angular, tapering below (see Festuca elatior).
Palea very similar to A. fatua, apex 2-4-toothed or bifid, rachilla with stiffer hairs.
A conspicuous tuft of fine silky hairs, longer than the palea at the base and on the rachilla.
- (in grasses) the short stem of a spikelet that bears the florets
C19: from New Latin, diminutive of rachis
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
- 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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