The Geography of Phytochemical Races

2.7 North and Central America 97
Table 2.19 Distribution of sesquiterpene lactones in Ambrosia ambrosioides (from Seaman and
Mabry, 1979b)
Sampleb State Lat. Sesquiterpene Lactonea DA HAD PAR DAM
ROD ac ARIZONA 33°N – – – 100
63 b ARIZONA 32°30′ 35 – – 65
1766 c BAJA 30° – – – 100
90 d BAJA 29° 65 – – 35
94 e BAJA 28° 55 – – 45
42 f SONORA 28° – – 100 –
43 g SONORA 27°30′ – – 100 –
100 h BAJA 26°30′ 100 – – –
1838 i BAJA 26° 100 – – –
103 j BAJA 25°30′ 50 32 10 –
115 k BAJA 24° 25 55 20 –
116 l BAJA 23° 100 – – –
120 m SINALOA?