392 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Perianth densely villous, especially in the throat, the 

 hairs, however, rather short; teeth of the perianth 

 very broadly triangular; stems more or less villous 

 above 3. S. arenarius. 



Perianth only puberulent and slightly viscid; teeth much 

 longer, triangular; stems only puberulent above. 

 (Leaves greener,) 4. S. macrodontus. 



1. Salpianthus purpuraacens (Cav.) Hook. & Arn. Bot. Beech. Voy. 508. 1841. 

 Boldoa purpurascens Cav.; Lag. Gen. & Sp. Nov. 10. 181G. 

 Boldoa ovatifolia Lag. loc. cit. 



Cryptocarpus globosus II. B. K. Nov. Gen. & Sp. 2: 187. pi. 128. 1817. 

 Boerhaavia rhomboidea Humb.; Spreng. Jahrb. Gewiiehsk. I s : 66. 1818. 

 Boldoa paniculate Mart. & Gal. Bull. Acad. Sci. Brux. 10': 356. 1842. 

 Cryptocarpus rhomboideus Moq. in DC. Prodr. 13 2 : 88. 1849. 

 Type locality, "Cuba." Type collected by Boldo. 

 Specimens examined: 



Oaxaca: Valley of Oaxaca, alt. 1,530 to 1,630 meters, September 20, 1894, 



Nelson 1268; near Huajuapan, alt. 1,720 to 2,000 meters, November 16, 1894, 



Nelson 1971; Oaxaca Valley, alt. 1,530 meters, October 1, 1894, C. L. S?nith 



771; Valley of Oaxaca, November 1, 1894, L. C. Smith 276. 



Vera Cruz: Barranca de Santa Maria, vicinity of Zacuapan, November, 1906, 



Purpus 2271; Orizaba, 1853, Mutter 4158. 

 Jalisco: Waste places near Tequila, Octobers, 1893, Pringle 4594. 

 Sinaloa: Culiacan, September 22, 1904, Brandegee; Ymala, 1891, Palmer 1733. 

 Puebla: Tehuacan, December, 1841, Liebmann. 



Michoacan or Guerrero: Petatlan, November 15, 1898, Langkis.se 640. . 

 Colima: Manzanillo, December, 1890, Palmer 950. 



Guatkmala: El Rancho, Depart. Jalapa, January 20, 1908, Kellerman 8011. 

 Additional specimens cited by Hemsley: Tepic, Barclay; Cordillera of Oaxaca, alt. 

 1,530 meters, Galeotti 582; plains of Tehuacan, alt. 1,530 meters, Galeotti 378. 



There is a possibility that I ^agasca's two names represent different species, but there 

 is nothing to indicate this. The species has the distinction of having appeared three 

 times in De Candolle's Prodromus, twice in the Allioniaceae in the genus Boldoa, and 

 once on page 88 of the same volume as a member of the Chenopodiaceae. 



2. Salpianthus aequalis Standley, sp. nov. 



Plants 75 to 100 cm. high, forming clumps, woody below; stems stout, reddish, 

 striate, strongly fiexuose, almost equally dichotomous, sparingly purberulent below, 

 densely subvillous above, the white hairs of the pubescence giving the stems a grayish 

 appearance; leaf blades 65 mm. long or less, elliptic-lanceolate, narrowed at both 

 ends, blunt at the apex, cuneate at the base, usually sessile, puberulent on both sur- 

 faces, much paler beneath than above; flowers in dichotomously branching racemes 

 5 cm. long or less, these collected in a dense cyme 30 cm. broad; flowers on slender 

 pedicels 5 mm. long or less; perianth 5 mm. long, slightly expanded above, abundantly 

 villous, the teeth triangular and much broader than long; fruit compressed-spherical, 

 black and shining. 



Type in the National Herbarium, no. 385686, collected on the Monte de Charnaco, 

 Michoacan or Guerrero, at an altitude of 810 meters, March 5, 1898, by E. Langlasse 

 (no. 18). There is another sheet of the same collection in the Gray Herbarium. The 

 collector states that the flowers are white, while he calls those of S. arenarius rose. In 

 the dried specimens there does not seem to be any marked difference in color. He 

 also states that the common name of the plant is catharina. 



The peculiar method of branching immediately distinguishes this from the other 

 closely related species of the genus. In none of the specimens of the other species do 



