1) Class 2) Subclass phytomastigina 
Former term for plant-like flagellates, originally classified as a suborder or order, raised to the class Phytomastigophorea (Phytomastigophorasida) in recent classifications. ... Origin: phyto-+ G. Mastix, whip ... (05 Mar 2000) ... 
Type: Term Pronunciation: fī′tō-mas′ti-jī′nă Definitions: 1. Former term for plantlike flagellates, originally classified as a suborder or order, raised to the class Phytomastigophorea (Phytomastigophorasida) in recent classifications.
The phytomastigina are a plant-like sub-class of mastigophora.
[n] - plantlike flagellates containing chlorophyll
subclass Phytomastigina noun plantlike flagellates containing chlorophyll; often considered unicellular algae