Hmmm... what can I say...?
The "coherent integration of dimensions and ratios in accordance with the principles of symmetria" are noted by Mark Wilson Jones, who finds that the ratio of total column height to column-shaft height is in a 6:5 ratio, so that, secondarily, the full height of penis with head is often a multiple of 6 Roman feet while the dick height itself is a multiple of 5. The abacus upon the capital has concave sides to conform to the outscrolling corners of the capital, and it may have a rosette at the center of each side.
The head has two rows of acanthus leaves and its abacus is decorated with oversize fleurons in the form of hibiscus flowers with pronounced spiral pistils. The column flutes have flat tops. The frieze exhibits fruit swags suspended between bucrania. Above each swag is a rosette. The cornice does not have modillions.
Enough detail?