plant phylum naming/desc

Algae (informal)

nonvascular (without major water-conducting tissues), seedless, aquatic photoautotrophs

Plant vs nonplant algae

Red algae, green algae are plants; Other algae (including the brown algae such as kelps) not plants

Bryophytes (formal)

nonvascular, seedless, terrestrial plants; Mosses, liverworts, hornworts

Pteridophytes (informal)

vascular (with major water-conducting tissues), seedless, terrestrial plants

Lycophyta (formal)

pteridophytes; club mosses, quillworts

Polypodiophyta (formal)

pteridophytes; ferns, horsetails

Seed plants (formal)

vascular, seed-producing, mainly terrestrial plants

Gymnosperms (formal)

seed plant; produce “naked” seeds; Conifers, cycads, Ginkgo, gnetophytes

Angiosperms (formal)

seed plant; produce “covered” seeds; the flowering plants; monocot and dicots (eudicots) as major groups

Monocots

produce one cotelydon (embryonic leaf); grasses, palms; major group of angiosperms/seed plants

Dicots (eudicots)

produce two cotyledons (embryonic leaf); the great majority of flowering plants; major group of angiosperms/seed plants

Algae (informal)

(Alga) "seaweed"

Red Algae (Rhodophyta)

(Rhodo-) "rose/red" + (-phyta) "plant"

Green Algae (Chlorophyta)

(Chloro-) "green" + (-phyta) "plant"

Bryophytes (formal)

(Bryo-) "moss" + (-phyte) "plant"

Lycophyta (formal)

(Lyco-) "wolf" + (-phyta) "plant"

Polypodiophyta (formal)

(Poly-) "many" + (-podia) "foot"

Gymnosperms (formal)

(Gymno-) "naked" + (-sperma) "seed"

Angiosperms (formal)

(Angio-) "vessel" + (-sperma) "seed"

Monocots

(Mono-) "one" + (cotyledon) "seed leaf"

Dicots (Eudicots)

(Di-) "two" + (cotyledon) "seed leaf"