42 FIELD MUSEUM OP NATURAL HISTORY BOTANY, VOL. IV. 



Arcadia, Rev. J. M. Bates 5400 (Hb. Gray). TEXAS: Dallas, common on 

 prairie, B. F. Bush 1154 (Hb. Mo. 85477) ; San Antonio, Mr. and Mrs. J. 

 Clemens 953 (Hb. Mo. 808717); Graham, J. Reverchon 3279 (Hb. Mo. 

 85473). SASKATCHEWAN: "South Saskatchewan," J. Macounqi (Hb. 

 Gray; a small-fruited form). MONTANA: Great Falls, Sept. 16, 1885, 

 F. W. Anderson (Hb. Chi. 360828). COLORADO: Denver, common in 

 damp alkaline soil, Alice Eastwood 154 (Hb. Gray; Hb. Calif. 148085); 

 vicin. La Junta, Rose and Fitch 17507 (Hb. U. S. 760583). NEW 

 MEXICO: Nara Visa, Oct. 7, 1910, Geo. L. Fisher (Hb. Mo. 818395); 

 Mesilla Valley, Oct. 13, 1906, Paul C. Standley (Hb. Mo. 85488); 

 Mesilla Valley (Donna Ana County), College farm, Oct. 15, 1901, E. O. 

 Wooton (Hb. Mo. 85487); Mesilla Valley, Wooton and Standley 3129 

 (Hb. Field 223808). ARIZONA: Chiricahua Mountains, fields and sedi- 

 ments, J. C. Blunter 1487 (Hb. Field 242347; Hb. Gray; Hb. Mo. 85495; 

 Hb. N. Y.); Fort Apache, Rev. PaulS. Mayerhoff 88 (Hb. Field 113427). 

 WASHINGTON: Spokane, Frank 0. Kreager 537 (Hb. Gray); Spokane, 

 along creek, Sept. i, 1899, C. V. Piper (Hb. Gray); West Klickitat 

 County, sandy banks of Columbia River, W. N. Suksdorf 1583 (Hb. 

 Field 89751; Hb. Gray; Hb. Mo. 85499). CALIFORNIA: Los Angeles, 

 Dr. Hasse 4695 (Hb. N. Y.). SAN Luis POTOSI: San Luis Potosi, in 

 sandy places about the city, Dr. J. G. Schajfner 388 (Hb. Gray). Sina- 

 loa: near Mazatlan, Rose, Standley and Russell 14133 (Hb. N. Y.; 

 Hb. U. S. 636993). GUANAJUATO: Guanajuato, in 1891, Prof. A. 

 Duges (Hb. Gray). MORELOS: near Cuernavaca, C. G. Pringle 7330 

 (Hb. Gray). OAXACA: Valle de Etla, Rev. Lucius C. Smith 783 (Hb. 

 Gray). CUBA: Guines, H. A. Van Hermann 166 (Hb. Field 170583). 



Moretti's original description of X. italicum is very full. According 

 to his own account, for a long time he had considered his species to be 

 X. echinatum Murr. and had sent specimens so labeled to various emi- 

 nent botanists such as De Candolle, Bertoloni etc. Finally he was forced 

 to the conclusion that the species was distinct from X. echinatum Murr. 

 and so he described it as new. He stated numerous characters in a 

 minutely detailed way. We quote his description of the fruit: "Nux 

 ovato-oblonga, undique aculeata, aculeis rigidis, apice simpliciter un- 

 cinatis, singulis undique echinatis. Rostra bina, patula, uncinata, 

 quorum uncini convergentes. Styli basi laeviter complanati, hinc 

 bifidi, e latere interiori uniuscuiusque rostri versus extremitatem 

 prodeuntes." 



Moretti's plants were collected in several localities along the Po 

 River from Turin to Pavia. In the Bernhardi Herbarium (Hb. Mo. 

 85516) there exists a somewhat fragmentary and immature specimen 

 with the inscription "Xanthium echinatum frequens Tau- 



