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USNM Number: 3448056

Collection Number: 13699

Collection Date: 1973-09-30 single date

Collectors: Henrickson, James

Country: MX

State/Province:

Territory: Coahuila

County:

Precise Locality: ca 18 (air) miles NE of Tlahualilo, 9 (rd) miles NW of Los Charcos de Risa, in gentle limestone canyon E of Sierra de Tlahualilo, in clay limestone soil

Latitude: 26 17 N

Longitude: 103 13 W

Elevation: 4200 feet

Cultivated: