Abstract
Inflorescence and floral ontogeny are described in the mimosoid Acacia baileyana F. Muell., using scanning electron microscopy and light microscopy. The panicle includes first‐order and second‐order inflorescences. The first‐order inflorescence meristem produces first‐order bracts in acropetal order; these bracts each subtend a second‐order inflorescence meristem, commonly called a head. Each second‐order inflorescence meristem initiates an acropetally sequential series of second‐order bracts. After all bracts are formed, their subtended floral meristems are initiated synchronously. The sepals and petals of the radially symmetrical flowers are arranged in alternating pentamerous whorls. There are 30–40 stamens and a unicarpellate gynoecium. In most flowers, the sepals are initiated helically, with the first‐formed sepal varying in position. Petal primordia are initiated simultaneously, alternate to the sepals. Three to five individual stamen primordia are initiated in each of five altemipetalous sectorial clusters. Additional stamen primordia are initiated between adjacent clusters, followed by other stamens initiated basipetally as well as centripetally. The apical configuration shifts from a tunica‐corpus cellular arrangement before organogenesis to a mantle‐core arrangement at sepal initiation. All floral organs are initiated by periclinal divisions of the subsurface mantle cells. The receptacle expands radially by numerous anticlinal divisions in the mantle at the summit, concurrently with proliferation of stamen primordia. The carpel primordium develops in terminal position by conversion of the floral apex.
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Claims 13
Claim · model-written summary
The panicle of Acacia baileyana includes first-order and second-order inflorescences.
- Taxon
- ACACIA BAILEYANA
Acacia baileyanat0 - Organ / stage
- paniclee0
- Outcome
- includes first‐order and second‐order inflorescencese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The panicle includes first‐order and second‐order inflorescences”
t0“ACACIA BAILEYANA”
Claim · model-written summary
The first-order inflorescence meristem produces first-order bracts in acropetal order.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Organ / stage
- first‐order inflorescence meristeme0
- Outcome
- produces first‐order bracts in acropetal ordere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The first‐order inflorescence meristem produces first‐order bracts in acropetal order”
t0“ACACIA BAILEYANA”
Claim · model-written summary
After all bracts are formed, the floral meristems they subtend are initiated synchronously.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Organ / stage
- floral meristemse0
- Outcome
- initiated synchronouslye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After all bracts are formed, their subtended floral meristems are initiated synchronously”
t0“ACACIA BAILEYANA”
Claim · model-written summary
The sepals and petals of the radially symmetrical flowers are arranged in alternating pentamerous whorls.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Organ / stage
- sepals and petalse0
- Outcome
- arranged in alternating pentamerous whorlse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sepals and petals of the radially symmetrical flowers are arranged in alternating pentamerous whorls”
t0“ACACIA BAILEYANA”
Claim · model-written summary
The flowers have 30-40 stamens and a unicarpellate gynoecium.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Outcome
- 30–40 stamens and a unicarpellate gynoeciume0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There are 30–40 stamens and a unicarpellate gynoecium”
t0“ACACIA BAILEYANA”
Claim · model-written summary
In most flowers the sepals are initiated helically, and the first-formed sepal varies in position.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Organ / stage
- sepalse0
- Outcome
- initiated helicallye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In most flowers, the sepals are initiated helically, with the first‐formed sepal varying in position”
t0“ACACIA BAILEYANA”
Claim · model-written summary
Petal primordia are initiated simultaneously, alternate to the sepals.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Organ / stage
- Petal primordiae0
- Outcome
- initiated simultaneouslye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Petal primordia are initiated simultaneously, alternate to the sepals”
t0“ACACIA BAILEYANA”
Claim · model-written summary
Three to five stamen primordia are initiated in each of five alternipetalous sectorial clusters.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Organ / stage
- stamen primordiae0
- Outcome
- initiated in each of five altemipetalous sectorial clusterse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three to five individual stamen primordia are initiated in each of five altemipetalous sectorial clusters”
t0“ACACIA BAILEYANA”
Claim · model-written summary
Additional stamen primordia are initiated between adjacent clusters, followed by other stamens initiated basipetally as well as centripetally.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Organ / stage
- stamen primordiae0
- Outcome
- initiated between adjacent clusterse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Additional stamen primordia are initiated between adjacent clusters, followed by other stamens initiated basipetally as well as centripetally”
t0“ACACIA BAILEYANA”
Claim · model-written summary
The apical configuration shifts from a tunica-corpus cellular arrangement before organogenesis to a mantle-core arrangement at sepal initiation.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Organ / stage
- apical configuratione0
- Outcome
- shifts from a tunica‐corpus cellular arrangement before organogenesis to a mantle‐core arrangement at sepal initiatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The apical configuration shifts from a tunica‐corpus cellular arrangement before organogenesis to a mantle‐core arrangement at sepal initiation”
t0“ACACIA BAILEYANA”
Claim · model-written summary
All floral organs are initiated by periclinal divisions of the subsurface mantle cells.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Organ / stage
- floral organse0
- Outcome
- initiated by periclinal divisions of the subsurface mantle cellse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All floral organs are initiated by periclinal divisions of the subsurface mantle cells”
t0“ACACIA BAILEYANA”
Claim · model-written summary
The receptacle expands radially by numerous anticlinal divisions in the mantle at the summit, concurrently with proliferation of stamen primordia.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Organ / stage
- receptaclee0
- Outcome
- expands radially by numerous anticlinal divisionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The receptacle expands radially by numerous anticlinal divisions in the mantle at the summit, concurrently with proliferation of stamen primordia”
t0“ACACIA BAILEYANA”
Claim · model-written summary
The carpel primordium develops in terminal position by conversion of the floral apex.
- Taxon
- ACACIA BAILEYANAAcacia baileyanat0
- Organ / stage
- carpel primordiume0
- Outcome
- develops in terminal position by conversion of the floral apexe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The carpel primordium develops in terminal position by conversion of the floral apex”
t0“ACACIA BAILEYANA”