70 standley: tidestromia, a new generic name 



name Tidestromia, given in honor of Mr. Ivar Tidestrom, an 

 indefatigable student of the plants of the United States, who has 

 given many years to systematic herbarium and field studies of 

 the plants of many parts of our country, especially of Maryland 

 and Virginia, California, Arizona, and Utah. 



TIDESTROMIA Standley, nom. nov. 

 Cladothrix Nutt. ; Moq. in DC. Prodr. 13 2 : 359. 1849, as synonym ; 

 S. Wats. Bot. Calif. 2: 43. 1880. 



Tidestromia lanuginosa (Nutt.) Standley. 

 Achyranthes lanuginosa Nutt. Trans. Amer. Phil. Soc. n. ser. 5: 



166. 1820. 

 Alternanthera lanuginosa Moq. in DC. Prodr. 13 2 : 359. 1849. 

 Cladothrix lanuginosa Nutt.; Moq. in DC. Prodr. 13 2 : 360. 1849, 

 as synonym; S. Wats. Bot. Calif. 2: 43. 1880. 



Western Kansas to southeastern Utah, south to Arizona, western 

 Texas, and Zacatecas and Sinaloa, Mexico. 



Tidestromia oblongifolia (S. Wats.) Standley. 



Cladothrix oblongifolia S. Wats. Proc. Amer. Acad. 17: 376. 1882. 

 Cladothrix cryptantha S. Wats. Proc. Amer. Acad. 26: 125. 1891. 



Southeastern California to western Nevada and Arizona. 



Tidestromia suffruticosa (Torr.) Standley. 



Alternanthera suffruticosa Torr. U. S. & Mex. Bound. Bot. 181. 



1859. 

 Cladothrix suffruticosa S. Wats. Bot. Calif. 2: 43. 1880. 



Western Texas and southern New Mexico to Coahuila, Mexico. 



