Hojas circulares de un diámtero promedio de un metro. Peciolo largo
These have an intracellular cyanobacterial symbiont that fixes nitrogen, allowing the plant to thrive in the mineral volcanic ash soil here. This genus is the only known example of such symbiosis among flowering plants.
The Gunnerales are an order of flowering plants. In the APG III system (2009) it contains two genera: Gunnera (in family Gunneraceae) and Myrothamnus (in family Myrothamnaceae). In the Cronquist system (1981), the Gunneraceae were in the Haloragales and Myrothamnaceae in the Hamamelidales. DNA analysis was definitive, but the grouping of both families was a surprise, given their very dissimilar morphologies. In Cronquist's old system (1981, 1988), and Takhtajan's (1997), the Gunneraceae were in the Rosidae,...