alga fu'ivla

x1 is an alga of species x2

In definition:

alge
x1 is algae of species/variety x2
mivrlge
j1 is/are (a) alga/algae [organism].

In notes:

ki'irsi
x1 is a sequence in which each adjacent pair of elements is related by x2 (binary predicate; applied in the order of the sequence).
plankona
x1 is a plankton of type/species x2
ri'ospa
s1=c1 is a green plant/viridiplantae/viridiphyta/chlorobionta/plantae sensu strictu of species/strain/cultivar s2