ZYGOPHYLLACEAE (Caltrop family)

Kallstroemia californica (S. Wats.) Vail California caltrop [US; Arizona; Yavapai County; Paulden; T17N, R2W, S7; 4,210 feet] [on bank leading down to the Verde River, near old homestead, 1.5 miles downstream from where Granite Creek flows into the Verde River; August 24, 1996; Collected & identified by Chuck Walker; #AZ384]

Larrea cuneifolia Cav. jarvilla macho [Argentina; Province Rio Negro; Department Maquinchao] [November 15, 2001; Collected & identified by Romina Vidal Russell; #ARG01]

Larrea tridentata (Sess� & Moc. ex DC.) Coville var. tridentata creosote bush [US; Arizona; Pinal County; Florence Junction; T2S, R10E, S16; 1,880 feet] [along the highway near Florence Junction; April 2, 1993; Collected & identified by Chuck Walker; #AZ43]

Tribulus cistoides L. Jamaican feverplant [US; Florida; Broward County; Fort Lauderdale; T50S, R42E, S10; 5 feet] [growing along Florida East Coast Railroad tracks, 20 m south of New River, downtown; January 5, 1998; Collected & identified by Chuck Walker; #FL61]

Tribulus terrestris L. puncturevine [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,380 feet] [west side of the 100 block of S. Alarcon St.; June 29, 1995; Collected & identified by Chuck Walker; #AZ185]