572 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Guerrero : between Tlapa and Tlaliscatilla, E. W. Nelson, no. 2048. 

 Jalisco : vicinity of San Sebastian, R W. Nelson, no. 4070. 



11. C. arvensis Schlecht. & Cham., precedenti similis, omnifariam 

 major, bracteis obovatis dilatatis coloratis corollam superantibus. — 

 Linnaea, v. 103 (1830) j Benth. 1. c. 529 ; Mart. & Gal. 1. c. 31 ; Hemsl. 

 1. c. 460 ; Loesen. 1. c. 285. — Orizaba : Botteri, nos. 339, 437. 

 Michoacan : near Guanajuato, C. & E. Seler, no. 1148; corn fields 

 near Patzcuaro, C. G. Pringle, no. 3349. Aguas Calientes : Hartweg, 

 no. 192. Jalisco : Guadalajara, C. G. Pringle, nos. 5348, 11,646; E 

 Palmer, no. 575, coll. of 1886. Oaxaca : Sierra de San Felipe, altitude 

 3050 m., C G. Pringle, no. 5664 ; same locality, altitude 2000 m., Con- 

 zntti & Gonzalez, no. 507 ; Etla, altitude 1600 m., Lucius C. Smith, 

 no. 963. State of Mexico: Valine de Mexico, Schaffner, no. 375; 

 Atusco, L. Hahn, 1865-1866; Salto de Agua, C. A. Purpus, no. 1712. 

 Vera Cruz : Zacuapan and vicinity, dry meadows, C. A. Purpus, 

 no. 1925 ; Cordoba, Bourgeau, no. 1893 ; same locality, altitude 850 m., 

 Conzatti & Gonzalez, no. 1135. S. W. Chihuahua : E. Palmer, year 

 1885, number missing. Mexico: without locality, Bilimek, no. 296; 

 Uhde, no. 945. 



12. C. nitricola, n. sp., herbacea ; caule basi ramoso piloso 2 dm. alto; 

 foliis lineari-oblongis apice obtusis basi amplexicaulibus, integris 3-4 cm. 

 longis 2-5 mm. latis, investis pilis basi subpapillosis ; foliis superioribus 

 et floralibus flores aequantibus vel floribus brevioribus ovatis vel spat- 

 ulatis, apice obtusis glandulosis ; floribus sessilibus in spicis angustis ; 

 calycis segmentis obtusis integris 6 mm. longis puberulente glandu- 

 losis ; corolla calycem paulo superanti ; galea acuta, dorso puberula ex- 

 serta curvata, labium inferius duplo superanti, 7 mm. longo ; labii 

 laciniis membranaceis acuminatis 1.5 mm. longis ; stigmate vix exserto 

 capitato-emarginato ; capsula ovato-acuminata. — San Luis Potosi : 

 knolls of alkaline meadows, Hacienda de Angostura, 10 July, 1891, 

 C. G. Pringle, no. 3756 (type, in hb. Gray). This was distributed as 

 C. scorzonerifolia, "a narrow-bracted form." It seems quite distinct, 

 peculiar in the group in the erect divisions of the lower lip which some- 

 what resemble those of C. mexicana. The plant has a pallid fleshy 

 appearance like many of the Chenopodiaceae. The lower part of the 

 stem is marked by bunches of leaf-scales resembling tubercles like those 

 on C. communis and C. arvensis. The flowers are ochroleucous. 



13. C. saltensis, n. sp., herbacea sparse arachnoidea 1 dm. alta; 

 caulibus 2-4 simplicibus ; foliis radicalibus subrosulatis lineari- 

 lanceolatis 1-1.5 cm. longis; foliis caulinis pinnatisectis, laciniis 3-5 

 divaricatis linearibus, imis saepe tantum longis quantum mediis ; 

 bracteis coloratis similibus foliis superioribus, laciniis latioribus ; flori- 



