Quote from the PACSOA web site on A.alexandrae states
"Two rather obscure varieties of this species have been named; A. alexandrae var. schizanthera was described by Wendland & Drude on the following differences compared to the type species: smaller inflorescence; prominent floral bracts; stamen number of 14-15; pistillode longer than the stamens; fruit slightly larger; and pinnae broader. All of these quantitative differences fit well into the accepted variability of the species. The se