As we ascend in the plant scale, we reach the phanerogams.

There was no herbage, only a few phanerogams on the limit of vegetable life.

These characters connect them with the PHANEROGAMS, or flowering plants.

All plants, phanerogams or cryptogams, can be divided into nocent or innocent, etc., etc.

Spores of mosses and liverworts, of vascular cryptogams, and pollen cells of phanerogams, which are the analogue of the spores.

I suspect crustacea would show more difference in the extreme forms than phanerogams, but, as you say, it is wild speculation.