A. microcystis Gray Proc. Am. Acad. 6 220 1864 
Phaca microcystis (Gray) Rydberg Fl. Mont. 245 1900 
A. debilis Walp. Rep. ı 710 1842 
miserandrus Greene Erythea 3 76 1895 is Hornii var. Bajaensis. Th 
use of such an insulting name as this, evidently intended to reflect 
on Sheldon, suspasses the bounds of professional courtesy and 
common decency. | 
Missouriensis Nutt. Gen. 2 99 1818 No. 17 
Tragacantha Missouriensis (Nutt.) Kuntze Rev. 2 943 1891 
Xylophacos Missouriensis (Nutt.) Rydberg in Small's Fl. S. E. U. 
S. 620, 1332 1903 
Var. cuspidocarpus (Sheldon Minn. Bot. Stud. 9 149 1894 as 
species) Jones 
Xylophacos cuspidocarpus (Sheldon) Rydberg Torr. Bull. 40 48 1913 
A. puniceus Osterhout Muhl. 1 140 1906 
` Shortianus var. minor Gray Proc. Am. Acad. 6 211 1864 
thermalis Greene Erythea 3 76 1895 ; 
Moencoppensis Jones Zoe 2 12 1891 No. 203 
Mogollonicus Greene | orr. Bull..8 97 1881 is Bigelovii 
Mohavensis Watson Proc. Am. Acad. 20 361 1885 No. 93 
Mokiacensis Gray Proc. Am. Acad. 13 367 1878 is lentiginosus var. 
mollissimus Torr. Ann. N. Y. Lyc. 2 178 1828 No. 191 
Phaca villosa James Cat. 186 1825 
A. simulans Cockerell Torreya 2 154 1902 
montanus (Nutt.) Jones No. 16 Page 80 
Kentrophyta montana Nutt. in T. & G. FL N. A. 1 353 1838 
viridis l. c. 
Wolffi Rydberg Torr. Bull. 32 665 1905 
A. Kentrophyta Gray Proc. Phil. Acad. Ser. 2 7 60 186 
viridis (Nutt) Sheldon Minn. Bot. Stud. 9 ni 1894 
Homalobus montanus (Nutt.) Britton Fl. 2 306 1897 
Wolffi Rydberg Torr. Bull. 31 562 1904 
Tragacantha montana (Nutt.) Kuntze Rev. Gen. 2 941 1891 
Phaca viridis (Nutt.) Britton Mem. Torr. Club 5 201 1894 
Var. Coloradoen:is Jones 
A. Kentrophyta var. Coloradoensis Jones Cont. 10 63 1902 
Var. impensus (Sheldon) Jones ; 
A. viridis var. impensus Sheldon Minn. Bot. Stud. 9 118 1894 
Kentrophyta var. elatus Watson Bot. King 77 1871 
Kentrophyta impensa (Sheldon) Rydberg Torr. Bnll. 32.665 1905 
Var. rotundus Jones T pur 
A. tegetarius var. rotundus Jones Cont. 7 650 189 
Kentrophyta var. rotuadus Jones Cont. 9 42 1 3 
Var. tegetarius (Watson) Jones 
A. tegetarius Watson Bot. King 76 1871 
Var. implexus Canby in Porter & Coulter Fl. Col. App. 1874 
aculeatus Nelson Torr. Bull. 26-10 1 
Homalobus aculeatus (Nelson) Rydberg Fl. Mont. 246 1900 
tegetarius (Watson) Rydberg Torr. Bull. 31 563 1904 
Kentrophyta tegetaria (Watson) Rydberg Torr. Bull. 40 52 1913 
aculeata (Nelson) Rydberg Torr. Bull. 32 665 1905 
Tragacantha tegetaria (Watson) Kuntze Rev. Gen. 2 941 1891 
Var. — Jones iex ; 
A. Kentrophyta var. ungulatus Jones Cont. 7 650 1 
Mortoni Nutt. Jour. Phil. Acad. 7 a 1834 is dit 
Tragacant eg, utt.] oo Rev. Gen. 2 946 1891 
I 
o. 
. Onix Mulfordz [Jones] da Torr. Bull. 40 51 1913 ; 
multicaulis Nutt. in T. € G. Fl. N. A. 1 335 1838 is pubentissimus 
