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rachilla

[ ruh-kil-uh ]

noun

, Botany.
, plural ra·chil·lae [r, uh, -, kil, -ee].
  1. a small or secondary rachis, as the axis of a spikelet in a grass inflorescence.


rachilla

/ rəˈkɪlə /

noun

  1. (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

rachilla

/ rə-kĭlə /

, Plural rachillae rə-kĭlē

  1. 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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Word History and Origins

Origin of rachilla1

1835–45; < New Latin, diminutive of rachis rachis
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Word History and Origins

Origin of rachilla1

C19: from New Latin, diminutive of rachis
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Example Sentences

In many-flowered spikelets the rachilla is often jointed and breaks into as many pieces as there are fruits, each piece bearing a glume and pale.

Rachilla not produced beyond the flowers. a.

B. Spikelets one- to indefinite-flowered; in the one-flowered the rachilla frequently produced beyond the flower; rachilla generally jointed above the empty glumes, which remain after the fruiting glumes have fallen.

It frequently extends downwards a little on the rachilla, forming with the latter a swollen callus, which is separated from the free portion by a furrow.

These consist typically of a short axis, the rachilla, almost or quite concealed by several chaffy bracts.

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