THALLOPHYTE
thallophyte
(noun) any of a group of cryptogamic organisms consisting principally of a thallus and thus showing no differentiation into stem and root and leaf
Source: WordNet® 3.1
Etymology
Noun
thallophyte (plural thallophytes)
(botany) Any of very many primitive plants that consist of a thallus (plant body not differentiated into roots, stems and leaves), formerly collected in the obsolete taxonomic group Thallophyta.
Synonyms
• (plant consisting of thallus only): thallogen
Coordinate terms
• cormophyte
Source: Wiktionary
Thal"lo*phyte, n. Etym: [Gr. (Bot.)
Definition: Same as Thallogen.
Source: Webster’s Unabridged Dictionary 1913 Edition