Eagle Pass Blacksenna
Ear Muhly
Eared Redstem
Eared Veinfern
Earleaf Brickellbush
Earleaf Fanpetals
Easterbonnets
Eastern Cottonwood
Eastern Mojave Buckwheat
Eastern Poison Ivy
Eastwood Fescue
Ebony Sedge
Ebony Spleenwort
Echeandia
Echinocactus
Echinocystis
Eclipta
Eelgrass
Egeria
Egg Milkvetch
Eggleaf Fiddleleaf
Egret Mudplantain
Egyptian Grass
El Paso Gilia
El Paso Skyrocket
Elderberry
Elegant Cinquefoil
Elephant Tree
Elephanthead Lousewort
Elkweed
Elliptical Buttercup
Elm
Emory Oak
Engelmann Spruce
English Ivy
Entireleaved Thelypody
Epixiphium
Erect Spiderling
Eremocrinum
Eryngo
Erythrina
Escarpment Milkvetch
Escobilla Butterflybush
Eurasian Watermilfoil