Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The axis of a spikelet of a grass or sedge.
from The Century Dictionary.
- noun In botany, a little rachis; a secondary rachis in a compound inflorescence, as of a spikelet in a grass.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Bot.) Same as
rhachilla .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany The part of a
spikelet , ingrasses andsedges , that bears theflorets - noun botany A
rachis of secondary or higherorder inleaves andferns that arecompound more than once.
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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The _fourth glume_ is borne by a short rachilla which is about
A Handbook of Some South Indian Grasses K. Rangachari
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But the rachilla of the spikelet may be jointed just above the empty glumes or between the flowering glumes.
A Handbook of Some South Indian Grasses K. Rangachari
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Spikelets are small, biseriate and crowded on one side of the spike and not jointed at the base; rachilla is slender, jointed and produced beyond the flowering glumes and bearing an imperfect glume.
A Handbook of Some South Indian Grasses K. Rangachari
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The _spikelets_ are ovate-oblong or linear-oblong, pale or purplish 1/6 to 1/2 inch, up to 50-flowered, rachilla is tough with very short internodes.
A Handbook of Some South Indian Grasses K. Rangachari
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The rachilla is produced beyond the fourth glume and it terminates in an awned rudimentary glume.
A Handbook of Some South Indian Grasses K. Rangachari
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The spikelets are usually 1-flowered and the rachilla is jointed at the base just above the empty glumes and it is not produced beyond the flowering glume.
A Handbook of Some South Indian Grasses K. Rangachari
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Usually the glumes are rather close together on the rachilla so that the internodes are very short; but in some grasses, as in _Dinebra arabica_, the glumes are rather distant and so the internodes are somewhat longer and conspicuous.
A Handbook of Some South Indian Grasses K. Rangachari
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Flowering glumes are imbricating, at length deciduous from the rachilla, 3-nerved, all bisexual or the uppermost and rarely the lowest imperfect, ovate to lanceolate, membranous to chartaceous, usually glabrous, the lateral nerves short not reaching the mid nerve; palea are broad, membranous, deciduous with its glume or persistent on the rachilla with two ciliate smooth or scabrid keels.
A Handbook of Some South Indian Grasses K. Rangachari
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The spikelets are sessile, 3 to 12 flowered, 2 to 3-seriate, secund, laterally compressed and forming digitate whorled or capitate spikes, not joined at the base; rachilla continuous between the flowering glumes.
A Handbook of Some South Indian Grasses K. Rangachari
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Panicum the rachilla is jointed to the pedicel below the empty glumes, whereas it is articulated just above these glumes in _Chloris barbata_.
A Handbook of Some South Indian Grasses K. Rangachari
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