nigrescens Hook. Fl. Bor. Am. 1 143 (1830) is A. tencllus. 
Nuttallii T. & G. Fl. 1 343 (1838) is A. vestitur 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. 
pectinata Hook. Fl. Bor. Am. 1 141 (1830) is A. pectinatus. 
picta Gray Pl. Fend. 37 (1849) is A. pietus. 
Plattensis (Nutt.) MacMillan Metasperm. 325 (1892) is A. Plat- 
tensis. 
platytropis (Gray) Rydberg Fl. Mont. 246 (1900) is A. platy- 
tropis. À : 
podocarpa Hook. Fl. Bor. Am. 1 142 (1830) is A. sclerocarpus. 
Preussii (Gray) Rydberg Torr. Bull. 40 47 (1913) 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. 
pygmza Nutt. in T. & G. Fl. 1 349 (1838) is A. pygmeus. 
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. $ : 
— (Gray) Rydberg Torr. Bull. 40 47 (1913) is A. sabu- 
onum. ; 
sericea Nutt. in T. & G. Fl. 1 343 (1838) is A. sericoleueus, 
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. Pulsifer. 
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. 
le a (Jones) Rydberg Torr. Bull. 32 665 (1905) is A. Weth- 
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- 
dberg Torr. Bull 32 661 (1905) is A. — 
