Grahamia (plant)

Distribution and taxonomy

Three species Grahamia bracteata, Grahamia kurtzii and Grahamia vulcanensis are found in northern Argentina, while Grahamia coahuilensis occurs in central Mexico and Grahamia frutescens is found in northern Mexico. Grahamia australiana is endemic to Australia. The genus Grahamia is divided into two subgenera, subgenus Grahamia contains G. bracteata and G, fructesecens which are low, scrambling small shrubs with stiff branches and cylindrical, rather smooth leaves; while Grahamia subgenus Talinaria are succulent, long-lived herbs with distinct succulent leaves on weak fleshy branches with the leaves aggregated near the branch tips. G. australiana was previously considered to be a member of the genus Anacampseros and the remaining species were placed in four monotypic genera, except for G. vulcanensis which was not considered. It is now thought that all six species are best considered in a single genus as proposed by G. D. Rowley. Other authorities, however, placed G. vulcanensis in Anacampseros.