Glossary for Poaceae
For terms not listed here, see the Plant Glossary.
- A stiff bristle situated at the tip of a glume or lemma.
- A seed-like fruit with a thin outer wall; a grain.
- The junction of the leaf sheath and blade.
- The stem of a grass.
- A single small flower, usually a member of a cluster, such as a spikelet or a head.
- The lowest two (sometimes one) empty scales subtending the usually fertile scales in grass spikelets.
- The lowermost of the two scales forming the floret in a grass spikelet -- the uppermost, less easily seen, is called the palea.
- An extension, often scarious (papery), of the summit of the leaf sheath.
- Same as a vein. The central vein running lengthwise on a scale
- The point along a stem which gives rise to leaves, branches, or inflorescences.
- The uppermost of the two scales forming the floret in a grass spikelet (often obscure or hidden).
- A secondary rachis. The axis of a spikelet.
- A tubular structure effected by the formation of leaf margins around the stem. The base of a grass leaf that runs from the node up to the blade.
- A secondary or small spike; specifically, in the Poaceae family, the unit composed or one or two glumes subtending one to several sets of lemma and palea combinations.
Related Web Sites:
Online Plant Glossaries
Information provided on this page applies to the Chicago Region and may not be relevant or complete for other regions.