cupule
Small cup structure
A cupule is a small cup-shaped structure, most commonly the cap that holds an acorn to its stem.
The term appears in botany for similar protective cups around seeds or nuts, and in anatomy for cup-like depressions in bone or tissue: The acorn had separated from its cupule.
Quercus genus member
hazelnut · chestnut · kernel · germination · squirrel · foraging · woodland · deciduous
Leaflike floral structure
- nutletSmall one-seeded fruit
- acheneClosed one-seeded fruit
- pericarpMature ovary wall
- huskDry seed covering
lemma · carpel · ovary · receptacle · calyx · sepal · valve · scale
One who possesses
- socketHollow receiving cavity
- cavityEmpty space within
- depressionProlonged low state
- chamberEnclosed room or cavity
receptacle · vessel · concavity · hollow · basin · cradle · nest · bed
Spiny-skinned marine invertebrate
- ossicleDiminutive skeletal element
- calyxCollective sepals encircling petals
- thecaProtective biological envelope
- brachialOf the arm
holdfast · paleontology · limestone · marine · Paleozoic · specimen · articulation · calcareous
oak
Quercus genus member
beechnut · hazelnut · chestnut · kernel · germination · squirrel · foraging · woodland · deciduous · fall
bract
Leaflike floral structure
husk · lemma · carpel · ovary · receptacle · calyx · sepal · valve · scale · whorl
holder
One who possesses
- socketHollow receiving cavity
- cavityEmpty space within
- depressionProlonged low state
chamber · receptacle · vessel · concavity · hollow · basin · cradle · nest · bed · enclosure
echinoderm
Spiny-skinned marine invertebrate
- ossicleDiminutive skeletal element
- calyxCollective sepals encircling petals
- thecaProtective biological envelope
brachial · holdfast · paleontology · limestone · marine · Paleozoic · specimen · articulation · calcareous