@article {Benya070540, author = {Edward G.F. Benya}, title = {Paleochronic reversion in Psophocarpus, the decompression function in floral anatomic fields}, elocation-id = {070540}, year = {2017}, doi = {10.1101/070540}, publisher = {Cold Spring Harbor Laboratory}, abstract = {Paleochronic reversion (an atavism) in Psophocarpus presents a basic floral phylloid ground state. That ground state can quickly change as permutation transformation (TX) begins. The form of permutation can vary as phyllotactic phylloid (TPhyld) and/or floral axial decompression (Taxl) presenting linear elongation (TLong) and/or rotational (TRtn) components. Research with 70 reverted floral specimens documented varying degrees of phyllotactic permutation at the bracts (Bt) region and inter-bracts (IBS) sub-region of the pre-whorls pedicel-bracts anatomic zone. Permutation further yielded an inter-zonal pericladial stalk (PCL). It continued at the floral whorls zone: the calyx (Cl), corolla (Crla), androecium (Andr), and gynoecium (Gynec) with components therein. These organ regions present a continuum as an axial dynamic vector space β„’TAxl of floral axial elongation so that an anatomic sequence of permutation activity runs from the bracts (Bt) region to the carpel (Crpl) inclusive with components therein, summarized by the formula: Ξ£ 𝔽 Bt(1,{\textellipsis},z) {\textpm} π•Š IBS(1,{\textellipsis},x) {\textpm} β‹€ 𝔽 PCL + 𝔽 Cl + β‹€ 𝔽 Crla + β‹€ 𝔽 Andr {\textpm} π•Š stamen fltn {\textpm} π•Š Andr spiral + β‹€ 𝔽 Gyncm {\textpm} π•Š Gnf {\textpm} β‹€ π•Š Cupl-Lk {\textpm} β‹€ π•Š Crpl {\textpm} (Crpl web {\textpm} vascarp {\textpm} Crpl diadn {\textpm} Crpl fltn + [fltn no] {\textpm} Crpl Rtn) = TX. The flower reverts from a system of determinate growth to one of indeterminate growth.HighlightsPaleo-Botanic morphologic floral traits are well documented on extinct species.Presence of these traits is documented on diverse extant botanic species.Sequence of such traits presents a developmental architecture for extant angiosperms.Paleochronic reversion in plants presents paleo-botanic morphologic traits.Paleochronically reverted specimens of extant species present a unique research tool.}, URL = {https://www.biorxiv.org/content/early/2017/01/02/070540}, eprint = {https://www.biorxiv.org/content/early/2017/01/02/070540.full.pdf}, journal = {bioRxiv} }