oocarpus Gray Proc. Am. Acad. 6 213 1864 No. 60 

 Tragacantha oocarpa (Gray) Kuntze Rev. Gen. 2 946 1891 

 A. CrotalaiiiE and crotalarioides Torr. Mex. Bound. 56 and 

 oophorus Watson Bot. King 73 1871 No. 76 



A. artipes Gray Proc. Am. Acad. 13 370 1878 



megacarpus var. caulescens Jones Cont. 7 643 1895 

 Phaca artipes (Gray) Rydberg Torr. Bull. 32 664 1905 

 Orcuttianus Watson Proc. Am. Acad. 20 361 1885 No. 222 



Var. Gregorianus Jones Cont. 10 63 1902' 

 Oreganus Nutt. in T. & G. Fl. N. A. i 335 1838 No. 127 



A. ventorum Gray Am. Nat. 8 212 1874 

 oreophilus Rydberg Torr. Bull. 31 561 1904 is Canadensis var. 

 Orizalxc Seaton Proc. Am. .Acad. 28 117 1893 No. 193 

 oroboides var. Americanos Gray Proc. Am. Acad. 6 205 1864 



is elegans 

 orthanthus Gray Proc. Am. Acad. 6 195 1864 No. 195 

 Tragacantha orthantha (Gray) Kuntze Rev. Gen. 2 946 1S91 

 Osterhouti Jones No. 208 



Owyheensis Nelson Bot. Gaz. 55 375 1913 is atratus var. 

 oxyphysus Gray Proc. Am. Acad. 6 218 1864 No. 68 

 Tragacantha oxyphysa (Gray) Kuntze Rev. Gen. 2 946 1891 

 Phaca oxyphysa (Gray) Heller Muhl. 2 86 1906 

 oxyrhynchus Hemsley Bot. Cent. Am. i 265 18S0 No. 261 



Tragacantha oxyrhyncha (Hems.) Kuntze Rev. Gen. 2 946 1891 

 pachy carpus T. & G. Fl. N. A. i 332 1838 is crassicarpus 

 pachypus Greene Bull. Cal. Acad. 3 157 1885 No 112 

 Paciticus Sheldon Minn. Bot. Stud. 9 174 1894 is accidens var. 

 Painteri Rose No. 148 



palans Jones Cont. 4 37 1893 is lentiginosus \ar. 

 Palliseri Gray Proc. Am. Acad. 6 227 1864 is campestris var. 



Tragacantha Palliseri (Gray) Kuntze Rev. 2 946 1891 

 Palmeri Gray Proc. Am. Acad. 7 398 1868 No. 44 



Tragacantha Palmeri (Gray) Kuntze Rev. Gen. 2 946 1891 

 Palousensis Piper Bot. Gaz. 22 489 1896 is arreclus 

 Panamintensis Sheldon in Coville's Death Val. Rep. 8y 1893 No. 140 

 Panguicensis Jones Cont. 10 62 1902 is aigophyllus var. 

 Parishii Gray Proc. Am. Acad. 19 75 1883 is IJouglasii var. 

 Parryi Gray Am. Jour. Sci. Ser. 2 33 410 1862 No. 182 

 Tragacantha Parryi (Gray) Kuntze Rev. Gen. 2 947 1 891 

 Xylophacos Parryi (Gray) Rydberg Torr. Bull. 32 662 1905 

 parvitlorus (Pursh) MacMillan Metasperm. 325 1892 No. 152 

 Dalea parviflora Pursh Fl. 474 1814 



Tragacantha parviflora (Pursh) Kuntze Rev. Gen. 2 947 1891 

 Microphacos parvifiorus [PurshJ Rydberg Torr. Bull. 40 ijl 1913- 

 Psoralea parviflora (Pursh) Poir. Encyc. Supp. 4 590 1823 

 A. gracilis Nutt. Gen. 2 100 1818 



Phaca gracilis (Nutt.) MacMillan Metasperm. 325 1892 

 Var. microlohus (Gray) Jones 

 A. microlobus (.iiay Proc. Am. Acad. 6 203 1864 

 Tragacantha microloba (Gray) Kuntze Rev. Gen. 2 947 1891 

 Microphacos microlobus (Gray) Rydberg Torr. Bull. 32 663 1905 

 parvus Hemsley Bot. Cent. Am. 2 266 1880 No. 250 



Tragacantha parva [Hemsley] Kuntze Rev. Gen. 2 947 1891 

 Pasqualensis Jones Cont. 1087 1902 No. 13A Page 78 

 Pattersoni Gray in Brandegee's Rep. S. W. Col. 285 1876 No. 117 

 A. diphysus var. albiflorus Gray PI. Fend. 34 1849 



recedens Greene ined ? 

 Tragacantha Pattersoni [Gray] Kuntze Rev. Gen. 2 947 1891 

 Phacopsis Pattersoni [Gray] Rydlierg Torr. Bull. 32 661 1905 

 Rydbergiella Pattersoni [Gray] Fedde & Sydow, Just. Bot. Jahr. 

 33 part I 534 1906 

 Var. pr.Telongus [Sheldon] Jones Cont. 10 65 1902 



A. pr;eIongus Sheldon Minn. Bot. Stud. 9 23 1894 

 Rothrockii Sheldon Minn. Bot. Stud. 9 174 1894 

 procerus Gray Proc. Am. Acad. 13 369 1878 

 Pattersoni var. procerus [Gray] Jones Cont. 7 636 1895 

 Phacopsis pradongus [Sheldon] Torr. Bull. 32 661 1905 

 Rydbergiella praslonga [Sheldon] Fedde & Sydow, Just. Jahr. 

 part I 33 534 1906 



