BATIDEA. 31 
Order CXI. BATIDEZ. 
Batidee, Benth. et Hook. Gen. Plant. iii. p. 88. 
This Order consists of a single species, Batis maritima, Linn., indigenous in America 
(and the Sandwich Islands?), and ranging from Florida, the West Indies, and Venezuela 
to Brazil. It also occurs in California, and is very likely to be found within the limits 
of this enumeration. 
Order CXII. POLYGONACEA. 
Polygonacee, Benth. et Hook. Gen. Plant. i. p. 88. 
Herbs, shrubs, or trees. About 600 species, belonging to thirty genera, and dispersed 
nearly all over the world. The arboreous element is almost exclusively tropical 
American; and the shrubby species are mainly congregated in the Eastern Mediter- 
ranean region and in Western Asia. | 
1. ERIOGONUM. 
Eriogonum, Mich. Fl. Bor.-Am. i. p- 246, t. 24; Benth. et Hook. Gen. Plant. iti. p. 92; Torr. et 
A. Gr. in Proc. Am. Acad. viil.; S. Wats. in Proc. Am. Acad. xu. 
This genus is confined to North America, chiefly western, a few species extending 
into Mexico; and it comprises about 100 herbaceous and half-shrubby species. 
1. Eriogonum abertiana, Torr. in Emory’s Rep. p. 151; DC. Prodr. xiv. 
p. 21; Proc. Am. Acad. viii. p. 189, et xii. p. 258. 
Luxas: New Mexico; Arizona.—Norra Mexico, Chihuahua (ex Torrey & Gray), 
region of San Luis Potosi, 6000 to 8000 feet (Parry & Palmer). Hb. Kew. 
2. Eriogonum alatum, Torr. in Sitgreave’s Rep. p. 168, t. 8; DC. Prodr. xiv. 
p- 6; Proc. Am. Acad. viii. p. 154, et xii. p. 254. 
Nepraska to Texas and Arizona.—NortH Mexico, near the copper-mines (Bigelow ; 
Thurber). Hb. Kew. | 
3. Eriogonum annuum, Nutt. in Trans. Am. Phil. Soc. v. p. 164; DC. Prodr. 
xiv. p. 19; Proc. Am. Acad. viii. p. 173, et xu. p. 262. 
Cotorapo to the Rocky Movuntains, and southward to TEXas. —Norm MEXIco, 
Chihuahua (Thurber). 
4, Eriogonum atrorubens, Engelm. Pl. Wisliz. p. 24; DC. Prodr. xiv. p. 7; 
Proc. Am. Acad. vill. p. 154, et xii. p. 261. 
Norts Mexico, Cosiquiriachi, Chihuahua (Wislizenus), mountains east of Saltillo, 
Coahuila (Palmer, 2088). Hb. Kew. 
