Agave tequilana Through the 1990s, diseases spread, particularly "Fusarium" fungi and "Erwinia" bacteria, exacerbated by the low genetic diversity of the agave plants. Other problems include the agave weevil, "Scyphophorus acupunctatus", and a fungus, "Thielaviopsis paradoxa". According to a 2004 study, additional pathogens, "Erwinia carotovora", "Enterobacter agglomerans", "Pseudomonas mendocina", and "Serratia" spp. are responsible for continued rot. The homoisoflavanones 5,7-dihydroxy-3-(4-methoxybenzyl)-chroman-4-one, 7-hydroxy-3-(4-hydroxybenzyl)-chroman-4-one and 4’-demethyl-3,9-dihydro-punctatin can be isolated from "A. tequilana". Agave tequilana Agave tequilana, commonly called blue agave () or tequila agave, is an agave plant that is an important economic product of Jalisco, Mexico, due to its role as the base ingredient
Agave shawii Agave shawii Agave shawii, with the common names coastal agave or Shaw's agave, is a very rare and critically endangered species in the genus "Agave" native to southwestern California and Baja California. The plant is named for Henry Shaw, the founder of the Missouri Botanical Garden. The plant is native to California coastal sage and chaparral habitats, along the Pacific Coast of northern Baja California state of Mexico and southwesternmost San Diego County of California. It is much more common in the wild in Baja California than in San Diego County, where urban development has essentially wiped out the plant's