Pandanus baptistii vs. Phormium tenax?

Honolulu, HI

I would like to know how to tell a Phormium tenax ‘Yellow Wave’ from a Pandanus baptistii ‘Variegata’ (Dwarf Pandanus)? The nurseries here in Hawaii have me confused- they seem to be calling both plants by the same name- Dwarf Pandanus. I know that their flower morphology is significantly different, but both species take several years to flower (from a juvenile stage). Is there an immediate way to tell the difference?

Thumbnail by A_Muse_Mentality
San Francisco, CA

The leaves on Phormium are in a dichotomous arrangement like the flat fan that one sees on Iris. Pandanus have a spiral growth pattern.

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