Hackberry          

Hair-like Sedge      

Hairgrass          

Hairsedge          

Hairy Arnica      

Hairy Beardtongue          

Hairy Bedstraw          

Hairy Crabgrass          

Hairy Evening Primrose          

Hairy Goldenrod          

Hairy Hedgenettle          

Hairy Honeysuckle          

Hairy Lespedeza      

Hairy Lettuce          

Hairy New York Aster          

Hairy Pagoda-plant          

Hairy Pinweed          

Hairy Purslane Speedwell          

Hairy Rockcress          

Hairy Sedge      

Hairy White Oldfield Aster          

Hairy Wildrye          

Hairy Woodland Brome          

Hairy Woodrush          

Hairyfruit Sedge      

Hairystem Gooseberry          

Halberdleaf Tearthumb          

Handsome Harry          

Handsome Sedge          

Hard Fescue          

Hard Wallflower          

Hardstem Bulrush          

Harlequin Blueflag          

Harsh Dewberry          

Hawkbit          

Hawksbeard          

Hawkweed          

Hawkweed Oxtongue          

Hawthorn          

Hay Sedge          

Hayscented Fern          

Hazel Alder      

Hazelnut          

Heartleaf Foamflower