Alsophila glauca var. densa Rosenst. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Cyatheales family Cyatheaceae genus Sphaeropteris species Sphaeropteris glauca Name Homonyms Alsophila glauca var. densa Rosenst. Alsophila glauca subsp. densa Rosenst.