430 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



22. ANULOCAULIS Standley. 



Anulocaulis Standley, Contr. Nat. Herb. 12: 374. 1909. 

 Type species, Boerhaavia eriosolena A. Gray. 



1. Anulocaulis eriosolenus (A. Gray) Standley, Contr. Nat. Herb. 12: 375. 1909. 



Boerhaavia eriosolena A. Gray, Amer. Journ. Sci. II. 15: 322. 1853. 



Type locality, "Valley near Azufrora, in Coahuila or Durango, Northern Mexico." 

 Type collected by Doctor Gregg in 1848 (no. 512). 

 Specimens examined: 



Coahuila: Azufrora, type; Viesca, 1905, Purpus 1053; Torreon, 1903, Purpus; 

 San Lorenzo de Laguna, 70 miles southwest of Parras, May, 1880, Palmer 1124. 



Anulocaulis leiosolcnus (Torr.) Standley should be found on the Mexican Bide of 

 the Rio Grande, since it was firat collected in the canyon of that stream 70 miles below 

 El Paso. 



