424 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



9. Boerhaavia fallax Stand ley, sp. no v. 



A much branched annual with slender, erect or spreading branches; stems spar- 

 ingly pilose below, glabrous above, but with glandular rings about the middle of 

 the internodes; leaf blades lanceolate or linear-lanceolate, acute, glabrous, whitish 

 beneath, and conspicuously brown-dotted, on petioles one-half or one-third as long; 

 bracts small, linear-lanceolate, soon deciduous; flowers few, in slender, loose spikes, 

 these in open panicles; perianth about 3 mm. long, with 1 exserted stamen; antho- 

 carp about 2.5 mm. long and almost as thick, very obtuse above, constricted below, 

 its 5 ribs acutish, smooth. 



Type in the IT. S. National Herbarium, no. 22930, collected at Los Angeles Bay, 

 Baja California, in 1887, by Dr. Edward Palmer (no. 603). 



The specimens were distributed as Boerhaavia wrightii, but they do not appear 

 to be more closely related to that species than to some others. From that they differ 

 in the smaller, less conspicuous, less brightly colored bracts, narrower leaves, much 

 less pubescent stem, and the 5-ribbed fruit. 



10. Boerhaavia spicata Choisy in DC. Prodr. 13 2 : 456. 1849. 

 Boerhaavia palmeri S. Wats. Proc. Amer, Acad. 24: 69. 1889. 

 Type locality, Mexico. 



Specimens examined: 



Chihuahua: Hacienda de San Miguel near Batopilas, 1885, Palmer 209. 



Sonora: Dry sandy soil near Guaymas, 1887, Palmer 683; arroyo near Alamos, 

 March 15, 1910, Hose, Standley & Russell 12899. 



Sinaloa: Open field near Villa Union, April 2, 1910, Rose, Standley & Russell 

 13935; sandy soil along the Rio Fuerte near Fuerte, March 25, 1910, Rose, 

 Standley & Russell 13455; Culiacan, August 20, 1904, Brandegce; along the river 

 near Rosario, in sandy soil, April 14, 1910, Rose, Standley & Russell 14587. 



Without definite locality: Fragment of the type in the Gray Herbarium. 



11. Boerhaavia rosei Standley, sp. nov. 



A densely branched annual with spreading or ascending branches; stems slender, 

 reddish, puberulent or covered in part with short gland-tipped hairs, above glabrous 

 except for the glandular rings about the middle of the internodes; leaf blades ovate to 

 lance-ovate, small, 10 to 20 mm. long7 acute, thick, dull green above, paler beneath 

 or glaucous, rounded or truncate at the base, glabrous; inflorescence much branched, 

 the spikes slender with the flowers few and rather distant, never crowded; perianth 

 less than 1 mm. long, pinkish, glabrous; stamens included; bractlets linear, attenuate, 

 hyaline; anthocarp narrowly obpyramidal, 3 mm. long, truncate at the apex, brown at 

 maturity, glabrous, with 5 narrow, straight, smooth ribs. 



Type in the U. S. National Herbarium, no. 636279, collected in sandy soil along the 

 Rio Fuerte near the town of Fuerte, Sinaloa, March 25, 1910, by Rose, Standley & 

 Russell (no. 13156). The fruit of the plant strongly resembles that of Boerhaavia 

 erecta. No other species of this group has truncate fruit, that of the others being 

 rounded at the apex. 



12. Boerhaavia watsoni Standley, Contr. Nat. Herb. 12: 384. 1909. 

 Boerhaavia spicata palmeri S. Wats. Proc. Amer. Acad. 24: 70. 1889. 



Type locality, "Sandy mesas about Guaymas, " Sonora. Type collected by Dr. 

 Edward Palmer in 1887 (no. 141). 

 Specimens examined: 



Sonora: Type; prairies, September, 1851, Thurber 792. 



13. Boerhaavia torreyana (S. Wats.) Standley, Contr. Nat. Herb. 12: 385. 1909. 

 Boerhaavia spicata torreyana S. Wats. Proc. Amer. Acad. 24: 70. 1889. 



Type locality, "Texas, New Mexico, and Arizona." 

 Specimens examined: 



Coahuila: Torreon, October, 1898, Palmer 488. 



