Baby Blue Eyes
Baby Goldenrod
Baffin Fescue
Bald Brome
Ballhead Ipomopsis
Ballhead Ragwort
Ballhead Sandwort
Ballhead Waterleaf
Ballmustard
Balloonpod Milkvetch
Balm
Balm-of-gilead
Balsam Groundsel
Balsam Poplar
Balsamroot
Baneberry
Barberry
Barestem Biscuitroot
Barestem Teesdalia
Baretwig Neststraw
Barley
Barnyardgrass
Barren Milkvetch
Barren Strawberry
Basalt Milkvetch
Basil Thyme
Basin Big Sagebrush
Basin Cryptantha
Basin Nemophila
Basin Saltbush
Basin Wildrye
Bastard Toadflax
Bay Forget-me-not
Beaked Hazelnut
Beaked Sedge
Beaked Spikerush
Beaksedge
Beancaper
Bear River Fleabane
Bearded Fescue
Bearded Flatsedge
Bearded Sprangletop
Beardless Wheatgrass
Beardless Wildrye