"A must for anyone who loves [ferns] and wants to know more about them."
"The major reference work for ferns and fern allies in these islands for a long time to come."
"A long-awaited and much requested manual of the Hawaiian pteridophytes. ... This manual is well researched, detailed and comprehensive. It is an essential addition to the library of all those interested in pteridophytes as well as those interested in Hawaiian plants and in island floras."