nigrcscens Hook. Fl. Bor. Am. 1 143 (18:50) is A. tcncllus, 

 Nuttallii T. & G. Fl. 1 34:5 (183S) is A. vestitus var. 

 oxyphysa (Gray) Heller Muhl. 2 86 (1905) is A. oxyphysus. 

 parviflora Nutt. in T. & G. Fl. 1 348 (1838) is A. clegans. 

 parvifolia Nutt. in T. & G. Fl. 1 348 (1838) is A. parviflorus. 

 pauciflora Nutt. in T. &G. Fl. 1 348 (1838) is A. leptaleus. 

 pcctinata Hook. Fl. Bor. Am. 1 141 (1830) is A. pectinatus. 

 picta Gray PI. Fend. 37 (1849) is A. pictus. 

 Plattensis (Nutt.) MacMillan Metasperm. 325 (1892) is A. Plat- 



tensis. 

 platytropis (Gray) Rydbcrp Fl. Mont. 240 (1900) is A. platy- 



tropis. 

 podocarpa Hook. Fl. Bor. Am. 1 142 (1830) is A. sclerocarpus. 

 Preussii (Gray) Rydberg Torr. Bull. 40 47 (191-3) is A. Preussii. 

 pubentissima (T. & G.) Rydberg Torr. Bull. 40 48 (1913) is A. 



pubentissimus, 

 Purshii (Dougl.) Piper Fl. Wash, 369 (1906) is A. Purshii. 

 pygmaea Nutt, in T. & G. Fl. 1 349 (1838) is A. pygmaeus. 

 reventa (Gray) Piper Fl, Wash. 372 (1906) is A, reventus. 



Var. Canbyi (Jones) Piper Fl, Wash. 373 (1906) is A. reventus. 

 Reverchoni (Gray) Rydberg in Small's Fl. S. E. U. S, 619 (1903) 



is A, lotiflorus. 

 Robbinsii Oakes in Hovey's Mag. 7 181 (1841) is A. Labradoricus 



var. 

 sabulonum (Gray) Rydberg Torr. Bull. 40 47 (1913) is A. sabu- 



lonum, 

 sericea Nutt. in T. & G. Fl. 1 343 (1838) is A. sericoleucus. 

 serotina (Gray) Piper Fl. Wash. 374 (1906) is A. campestris var. 

 sesquiflora (Watson) Rydberg Torr. Bull. 40 48 (1913) is A. ses- 



quiflorus. 

 Silerana (Jones) Rydberg Torr. Bull. 40 47 (1913) is A. Sileranus. 

 simplicifolia Nutt. in T. & G. Fl. 1 350 (1838) is A. simplicifolius. 

 sinuatus Piper Fl. Wash. 370 (1906) is A. Gibbsii. 

 Spaldingii (Gray) Piper Fl. Wash. 370 (1906) is-A. Spaldingii. 

 speirocarpa (Gray) Piper Fl. Wash. 370 (1906) is A. speirocarpus. 

 stenophylla (T. & G.) Piper Fl. Wash. 371 (1906) is A. steno- 



phyllus. 

 subcinerea (Gray) Rydberg Torr. Bull. 40 47 (1913) is A. sub- 



cinereus. 

 succumbens (Dougl.) Piper Fl. Wash. 370 (1906) is A. succum- 



bens. 

 Suksdorfii (Howell) Piper Fl. Wash. 369 (1906) is A. Pulsiferje. 

 Tejonensis (Jones) Heller Muhl. 2 85 (1905) is A. Douglasii var, 

 trochopoda Nutt. in T. & G. Fl. 1 343 (1838) is A. trichopodus. 

 triflora DC. Ast. 50 (1802) is A. triflorus. 



triphylla (Pursh) Eat. & Wr. Bot. Ed. 8 351 (1840) is A. triphyllus. 

 Tweedyi (Canby) Piper Fl. Wash. 371 (1906) is A. Tweedyi. 

 vestita Benth. Bot. Sulph. 13 (1844) is A. vestitus. 

 villosa (Mx.) Nutt. Gen. 2 97 (1818) is A. villosus Mx. 

 villosa James Cat. 186 (1825) is A. mollissimus. 

 viridis (Nutt.) Britton Mem. Torr. Club. 5 201 (1894) is A. mon- 



tanus. 

 viridis (Nutt.) Piper Fl. Wash. 374 (1906) is A. montanus. 

 Wardi (Gray) Rydberg Torr. Bull. 40 47 (1913) is A. Wardi 

 Wetherilli (Jones) Rydberg Torr. Bull. 32 665 (1905) is A. Weth- 



erilli. 

 Whitneyi (Gray) Heller Muhl. 9 67 (1913) is A. Hookerianus var. 

 Phacopsis Rydberg Torr. Bull. 32 661 (1905) p. 16 



Pattersoni (Gray) Rydberg Torr. Bull. 32 661 (1905) is A Pat- 



tersoni. 

 praelongus (Sheldon) Rydberg Torr. Bull 32 661 (1905) is A 



Pattersoni var. 



