what is a forb
A forb (sometimes spelled phorb) is a herbaceous flowering plant that is not a graminoid (grasses, sedges and rushes).The term is used in biology and in vegetation ecology, especially in relation to grasslands and understory.orbs are members of a guild â a group of plant species with broadly similar growth form. In certain contexts in ecology, guild membership may often be more important than the taxonomic relationships between organisms.