- eupatorium
- ever-blooming
- erica
- eryngo
- estivation
- eucalypt
- euphrasy
- exalate
- ever-bearing
- exothecium
- exstipulate
- extrose
- exciple
- exine
- exostosis
- fanleaved
- fairy ring
- exsucceous
- faba
- feather-veined
- fern-palm
- fimbrillate
- finger-grass
- flesh-flowered
- floating-moss
- forage-plant
- foliose
- frogbit
- fruticulum
- frondescence
- fundamentum
- galanga
- garnet-berry
- gauze-tree
- gelidium
- germander
- globe-thistle
- glory-tree
- globe-amaranth
- globe-flower
- gibberellin
- gladiate
- goniocarpous
- goniocladous
- gonocalyx
- goose-foot
- gracilaria
- gynanthropia
- ground-pine
- groundoak
- guaco
- gynantherous
- hawkbit
- henequen
- heterocyst
- heterothallic
- hissop
- hormogonium
- horsemint
- hypha
- hypocotyl
- hypericum
- hypoblast
- hypogynous
- inflexed
- jarrah
- ladida
- knotgrass
- kowhai
- lespedeza
- ligule
- lobeliceous
- locoplant
- loment
- lovage
- lunary
- lychee
- lycopodium
- mandragora
- oceanophilous
- octagynous
- octogynous
- octosepalous
- oidiospore
- oleacae
- onagraceae
- oblanceolate
- obovoid
- octopetalous
- oidiophore
- oidium
- oka
- olea
- pachynosis
- phytometer
- relative transmission
- scandent
- scutiferous
- soft-leaved
- smooth-flowered