316 GENUS ATRIPLEX. 



like around the summit, deeply and acutely dentate to midway of the bract; faces 

 smooth. {A. lurida Brandegee, 1. c.) Mainland of Lower California. Type locality, 

 San Gregorio. Collections: Sandy plains near Santa Gertrudis Island, Pur pus 2 (DS, 

 UC) ; 25 miles north of San Ignacio, Nelson 7206 (US) ; tj-pe, February 2, 1889, Brandegee 

 (UC); Agua Verde, Rose 16575 (US, staminate only); Los Dolores, 1892, Bryant (UC). 



35e. Atriplex barclayana sonorae (Standley). — Leaves entire; fruiting bracts 

 moderately thick and spongious, the body convex on the sides and commonly spindle- 

 shaped (including the narrowed pedicel-like base), the whole bract 3 to 4 mm. long, 2.8 

 to 4 mm. wide, usually a trifle longer than wide; margins flat, herbaceous, laciniate from 

 apex to halfway down the sides of the bract ; faces with 2 or more sharp spine-like pro- 

 cesses similar to the teeth of the margins. {A. sonorae Standley, N. Am. Fl. 21:62, 

 1916.) Coast of Sonora and Sinaloa, islands in the Gulf of California, Cape Region of 

 Lower California, and Magdalena Island. Type locality, in alkaline soil near Empalme, 

 Sonora. Collections: Type collection, Sonora, Rose, Standley and Russell 12631 (US); 

 Guaymas, Sonora, Palmer 670 and 690 (US) ; same locality, Pahner 671 and 672 (US, 

 minor variation 1); San Luis Gonzales Bay, Lower California, Johnston 3351 (SF); 

 Gulf of California: Angel de la Guarda Island, Johnston 4234 (SF); North San Lorenzo 

 Island, Johnston 4196 (SF) ; San Esteban Island, Johnston 3189, 3191 (SF, UC, with some 

 bracts as in subspecies typica) ; same locality, Johnston 3192 (SF, UC, all bracts of sub- 

 species sonorae) ; Santa Inez Island, Johnston 3651 (SF) ; Altata, vicinity of Culiacan, 

 Sinaloa, September 2, 1904, Brandegee (Gr, UC) ; Lower California: Espiritu Santo Island, 

 1892, Bryant (UC) ; San Jose del Cabo, Anthony 358 (DS, UC, US, intermediate to sub- 

 species typica); Magdalena Island, February 26, 1889, Brandegee (UC). 



35/. Atriplex barclayana typica. — Leaves entire; fruiting bracts thick and spon- 

 gious, the body globoid, 2.5 to 4 or rarely 5 mm. long, 2.5 to 4 mm. wide; margins entire, 

 except at the summit, where usually there are a few short teeth; faces irregularly swollen, 

 often with a vertical furrow on each side of the enlarged midrib, nearly smooth, or with a 

 few minute obtuse tubercles. {Obio7ie barclayana Bentham, Botany Voyage Sulph. 48, 

 1844.) Seacoast of Sonora, Sinaloa, and Lower California and on the adjacent islands. 

 Type locahty, Magdalena Bay, Lower California. Collections: Tepoca Bay, Sonora, 

 Johnston 3284 (SF, UC) ; island in harbor of Guaymas, Sonora, Rose 12564 (NY, US) ; 

 Gulf of California: Angel de la Guarda Island, Rose 16766 (NY, US); San Luis Island, 

 Johnston 3319, 3321 (SF) ; Patos Island, Johnston 3242 (SF, UC, minor variation 2); 

 Tiburon Island (north end), Johnston 3259 (SF); Tiburon Island (south end). Rose 16806 

 (US) ; Ildefonso Island, Johnston 3750, 3751, and 3752 (SF); Carmen Island, Palmer 874 

 (Gr, US) ; Isla Partida, Johnston 3228 (SF, UC, some undeveloped bracts resembUng 

 those of subspecies palmeri) ; same locality and collector, 3229 (SF, UC, typical) ; Sal si 

 Puedes Island, Johnston 3525 (SF) ; South San Lorenzo Island, Johnston 4191 (SF) ; 

 Lower California: Los Angeles Bay, Johnston 3429 (SF); San Francisquito Bay, Rose 

 16753 (NY, US); Santa Aqueda, Palmer 259 (US); Pichilinque Island, Rose 16519 (US); 

 Santa Maria Bay, Rose 16255 (NY, US); Lagoon Head, Palmer 809 (Gr, NY, US); 

 Cedros Island, Palmer 754 (Gr, NY, US) ; Ascension Island, August 17, 1897, Bran- 

 degee (UC); Magdalena Island, Rose 16318 (NY, US); Altata, Sinaloa, Rose 1362 (US). 



MINOR VARIATIONS AND SYNONYMS.' 



1. Atriplex barclayana sonorae, but with thin, greenish leaves of an oblanceolate shape, many of them 

 slenderly cuspidate at apex. Represented by Palmer 671, 672, and a part of 677, all at the United States 

 National Herbarium, and collected at Guaymas, where grows also the usual form of sonorae. The plants are 

 apparently more herbaceous than the usual type, in which the leaves are thicker and broader, obtuse, and 



'Additional synonymy is given in connection with the description of each of the subspecies. 



