148 MINNESOTA BOTANICAL STUDIES. 



Yellowstone National Park, "Wyoming, May and June, 1893, by 

 Mr. F. H. Burglehaus. The species is near to Astragalus 

 shortianiis Nutt.. but the absence of pubescence and carpolo- 

 gical characters easily distinguish it, 



Astragalus shortianus Nutt in T. and G. Fl. 1 : 331. 



. 1838. 



A. humilis Geyer, in Hook. Lond. Journ. Bot 6: 211. 1847. 

 A. cyaneus A. Gray. Proc. Acad. Philad. ii. 7 : 60. 1863. 

 Tragacantha shortiana OK. Eev. Gen. PI. 2:948. 1891. 



Western Texas and New Mexico to Utah, Colorado, Ne- 

 braska, Wyoming and southern Montana. 



Astragalus missouriensis Nutt. Gen. 2 : 99. 1818. 



A. melanocarpus Nutt in Fras. Cat. 1. 1813, 



without descr. •• 



Phaca cretacea BuckIj^y . Proc. Acad. PhiJad. ii. 5: 452. 1861. 

 Tragacantha missiiriensis OK. Rev. Gen. PL 2:916. 1891. 



Saskatchewan and southern Montana to Kansas, Colorado 

 and northern New Mexico. 



Astragalus gilensis Greene. Bull. Torr. B6t. Club. 8: 



97. , 1881. 

 New Mexico. 



Astragalus reverchoni A. Gray. Proc. Am. Acad. 19: 

 74. 1883. 



Phaca cretacea Buckley. Proc. Acad. Philad. ii. 6: 1861. 

 lifot A. cretaceus Boiss. Diag. ii. 5: 84. 1853. 



an Oriental species. 

 Texas. 



Astragalus cyaneus A. Gray. PI. Fendl. 34. 1854. 



A. shortianus "NVTT. var. (?) minor A.Gray. Proc. Am. Acad 6: 



211. 1866. 

 A. shortianus Wats. PI. Wheeler Exped. 7. 1878. 

 Tragacantha cyanea OK. Rev. Gen. PI. 2: 944. 1891. 

 New Mexico and western Texas to Nebraska and Colorado. 



Astragalus crescenticarpus n. sp. 



Annual, pubescent throughout with appressed, white, verru- 

 cose hairs; stems short, 2 to 3 cm. in length, erect or procum- 



