RELIABLE INDICATOR PLANTS 1 29 



Second or late weed stage: 



Most characteristic species — 



Blue foxglove {Pentstemon procerus). 



Sweet sage {Artemisia discolor). 



Yarrow {Achillea lanulosa). 

 Other species of the second weed stage — 



Aster {A ster frondeus) . 



Butterweed {Senecio Columhianus). 



Cinquefoil {Potentilla Jilipes) . 



Evening primrose {Lavauxia flava) . 



False cymopterus {Pseudocymopterus Tidestromii) . 



False Solomon 's-seal {Vagnera stellata). 



Geranium {Geranium viscosissimum) . 



Horsemint {Agastache urticifolia) . 



Large mountain bromegrass {Bromus marginatus). 



Low larkspur {Delphinium Menziesii). 



Low pea vine {Lathyrus leucanthus). 



Mexican dock {Rumex Mexicanus). 



Mountain dandelion {Crepis acuminata). 



Oniongrass {Melica hulbosa). 



Porter's bromegrass {Bromus Porteri). 



Rubberweed ( Hymenoxys florihunda) . 



Sampson's mertensia {Mertensia Sampsonii). 



Scribner's wheatgrass {Agropyron Scrihneri). 



Showy oniongrass {Melica spectahilis) . 



Sneezeweed {Helenium Hoopesii). 



Tongue-leaved violet {Viola linguaefolia) . 



Mixed grass and weed stage: 

 Most characteristic species — 



Small mountain porcupinegrass {Stipa minor). 



Yellowbrush {Chrysothamnus lanceolatus) . 

 Other species of the mixed grass and weed stage — 



Blue foxglove {Pentstemon procerus). 



Geum {Geum Oregonense) . 



Junegrass {Koeleria cristata). 



