standley: genus arthrocnemum 399 



properly known as Arthrocnemum glaucum (Delile) Ung. Sternb.,* 

 while the Linnaean Salicornia fruticosa is a true Salicornia, with 

 pubescent seeds. These two plants have been greatly confused 

 by Old World botanists.^ 



Salicornia subterminalis is undoubtedly a member of the genus 

 Arthrocnemum. While closely related to A . glaucum of the Medi- 

 terranean region it appears distinct in its much narrower, more 

 acute spikes, numerous slender, erect branches, and pale seeds. 

 The form of the inflorescence, too, is pecuhar. The flowering 

 spikes usually do not terminate the branches, but themselves 

 terminate in long sterile branches. The flowering joints may be 

 found almost anywhere along the young branches; sometimes 

 they are solitary, but more often there are 3 to 14 together. 

 The plant of the Pacific Coast may, therefore, be known as 

 below. The Mexican specmiens come from a locality far distant 

 from southern California. It is probable that, when the coastal 

 regions of Sonora and Lower California have been more 

 thoroughly explored, the plant will be found at intervening 

 stations. 



Arthrocnemum subterminale (Parish) Standley. 



1 Arthrocnemum fruticosum californicum Moq. in DC. Prodr. 13-: 151. 

 1849. — Type collected in California by Nuttall {'' Salicornia calif or- 

 nica Nutt.! in herb."). The description is very brief but seems to 

 indicate the present plant. 

 Salicornia ambigua S. Wats. Proc. Am. Acad. 9: 125. 1874, in part; not 

 Michx.— The Wilkes specimen listed below was doubtless referred 

 here by Watson, who cites Wilkes among the collectors. The 

 Wilkes Expedition, however, collected specimens of *S. ambigua, 

 also. 

 Salicornia subterminalis Parish, Er^-thea 6: 87. 1898. — Tjv^ from 



San Jacinto Plains, California, S. B. & W. F. Parish 1520. 

 Specimens have been examined from the following localities : 

 California: San Francisco Bay, Wilkes Expl. Exped. 1204. Near 

 Bakersfield, Coville & Funston 1234. Menifee, Parish 4463. San Jacinto 

 Plains, ;S. B. & W. F. Parish 1520. Ballona marshes, near Mesmer, 

 Abrams 2565. San Diego, Wooton; K. Brandegee. Vicinity of Monument 

 258, Pacific coast, Mearns 3930. Avalon, Santa Catalina Island, Trask. 

 Mexico: Topolobampo, Sinaloa, Rose, Standley, & Russell 13286. 



*See Asch. & Graebn. Sjti. F1. Mitt. Eur. 5: 190. 1913. 



^ See C. E. Moss. Some species of Salicornia, Journ. Bot. Brit. & For. 49: 177- 

 185. 1911. 



