.'oocarpus Gray Proc, Am. Acad. 6213 1864 No. 60 
Tragacantha oocarpa (Gray) Kuntze Rev. Gen. 2 946 1891 
A. Crotalari and crotalarioides Torr. Mex. Bound. 56 and t. 17 1859 
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. Ser lag aye Jones Cont. 10 63 1902 
‘Oreganus Nutt. in T. & G. Fl. N. A. 1 335 1838 No. 127 
A. ventorum Gray Am. Nat. 8 212 1874 
oreophilus Rydberg Torr. Bull. 31 561 1904 is Canadensis var. 
Orizabe Seaton Proc. Am. Acad. 28 117 1893 No. 193 
oroboides var. Americanus 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 1891 
Dados: Jones No. 208 udine 
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. 1 265 1880 No. 261 
Tragacantha oxyrhyncha (Hems.) Kuntze Rev. Gen. 2 946 1891 
pachycarpus T. & G. Fl. N. A. 1 332 1838 is crassicarpus 
achypus Greene Bull. Cal. Acad. 5 157 1885 No. 112 
sies Lia Sheldon Minn. Bot. Stud. 9 174 1894 is accidens var. 
Painteri Rose No. 148 E 
alaas Jones Cont. 4 37 1893 is lentiginosus var. 
Palliser 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 arrectus 
Panamintensis Sheldon in Coville’s Death Val. Rep. 87 1893 No. 140 
Panguicensis Jones Cont. 10 62 1902 is argophyllus var. 
Parishii Gray Proc. Am. Acad. 19 75 1883 is Douglasii var. 
Parryi Gray Am. Jour. Sci. Ser. 2 33 410 1862 No. 182 
Tragacantha Parryi (Gray) Kuntze Rev. Gen. 2 947 1891 
Xylophacos Parryi (Gray) Rydberg Torr. Bull. 32 662 1905 
parviflorus (Pursh) MacMillan Metasperm. 325 iba No. 152 
Dalea parviflora Pursh Fl. 474 1814 
Yragacantha parviflora (Pursh) Kuntze Rev. Gen. 2 947 1891 
Microphacos parviflorus [Pursh] Kydberg Torr. Bull. 40 51 191 3 
Psoralea parviflora (Pursh) Poir. Encyc. Supp. 4 590 1823 
A, gracilis Nutt. Gen. 2 100 1818 
Phaca gracilis (Nutt.) MacMillan Metasperm. 325 1892 
Var. microlobus (Gray) Jones . € à; 
A. microlobus Gray 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. 10 87 1902 No. 13A 78 
Pattersoni Gray in Brandegee's Rep. S. W. Col. 285 1876 No. 117 
A. diphysus var. albiflorus Gray Pl. Fend. 34 1 
recedens Greene ined ? i 
Tragacantha Pattersoni [Gray] Kuntze Rev. Gen. 2 947 1891 
Phacopsis Pattersoni [Gray] Rydberg Torr. Bull. 32 661 1905 
Rydbergiella Pattersoni [Gray] Fedde & Sydow, Just. Bot. Jahr. 
33 part 1 5341 ER 
. Var. preelongus raise, Jones Cont. 10 65 1902 t 
A. prelongus Sheldon Minn. Bot. Stud. 9 23 1894 
Rothrockii Sheldon Minn. Bot. Stud. 9 174 1894 
= gen Proc. Am. Acad. 13 369 1878 A 
me Bltersoni var. procerus lon ] Jones Cont. 7 636 1895 
] Fedde & Sydow, Just. Jahr. on 
