LODGEPOLE-PINE FORESTS OF BOULDER PARK 



273 



II. VERNAL FLORA 

 Principal Species 



Date of Appearance 



Height of Blooming 



Length Bloooung 

 Season 



Thermo psis divaricarpa A. Nels . . 

 Anemone cylindrica A. Gray . . . . 



Erysimum wheeler i S. Wats 



Arnica cordifolia Hook 



June 21 

 June 29 

 June 20 

 June 30 



June 29 

 July 2 

 July I 

 July 4 



28 

 14 



19 



Secondary Species with Date of Greatest Abundance 



Erigeron trifidus Hook 



Astragalus alpinus L 



Draba streptocarpa A. Gray . 

 Arabis philonipha A. Nelson 

 Cerastium occidentale Greene 

 Sieversia ciliata (Pursh) Don 



June 29 

 June 29 

 June 30 

 July 2 

 July 2 

 July I 



III. ESTIVAL FLORA 

 Principal Species 



Aragallus lambertii (Pursh) Greene . 



Pentstemon alpinus Torr 



Pentstemon procerus Dougl 



Sedum stenopetalum Pursh 



Achillea la^iulosa Nutt 



Pseudocymopterus montanus (A 



Gray) C. & R 



Caslilleja sulphiirea Rydb 



Castilleja rhexifolia Rydb 



Chamaenerion angustifolium (L.) 



Scop 



Date of Appearance 



July I 

 June 29 

 July 10 

 July 2 

 June 30 



July I 

 July 10 

 July 10 



July 10 



Height of Blooming 



Julys 



July 13 

 July IS 

 July 12 

 July 14 



July 14 

 July 21 

 July 21 



Length of Blooming 

 Season 



25 

 27 



15 

 23 

 26 



60 



Secondary Species and Date of Greatest Abundance 



Aragallus richardsonii (Hook.) Greene 



Phacelia sericea Hook 



A ndrosace filiformis Retz 



Potentilla pulcherrima Lehm 



Potentilla concinna Richardson 



Arenaria fendleri A. Gray 



Pentstemon humilis Nutt 



Silene scouleri Hook 



Julys 

 July IS 

 July IS 

 July IS 

 July IS 

 July IS 

 July IS 

 July IS 



