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 palmeri Agave palmeri Agave palmeri (also known as Palmer's century plant) is an especially large member of the genus "Agave", in the family Asparagaceae. It is native to southern Arizona, southwestern New Mexico, Sonora and Chihuahua. The plant is also frequently cultivated as an ornamental in other regions. "Agave palmeri" is the largest Agave species growing in the United States. It produces a basal leaf rosette of fleshy, upright green leaves of up to 120 cm (4 ft) in length, with jagged edges and ending in thick spines of 3–6 cm (1.2–2.4 inches) long. Flowers are pale yellow and green and