An illustration of a single dahlia flower. Dahlia is a genus of bushy, tuberous, perennial plants native to Mexico, Central America, and Colombia. There at least 36 species of Dahlia. Dahlia hybrids are commonly grown as garden plants. The Aztecs gathered and cultivated the dahlia for food, ceremony, as well as decorative purposes, and the long woody stem of one variety was used for small pipes

Dahlia

An illustration of a single dahlia flower. Dahlia is a genus of bushy, tuberous, perennial plants native…

An illustration of a double variety dahlia flower. Dahlia is a genus of bushy, tuberous, perennial plants native to Mexico, Central America, and Colombia. There at least 36 species of Dahlia. Dahlia hybrids are commonly grown as garden plants. The Aztecs gathered and cultivated the dahlia for food, ceremony, as well as decorative purposes, and the long woody stem of one variety was used for small pipes

Dahlia

An illustration of a double variety dahlia flower. Dahlia is a genus of bushy, tuberous, perennial plants…

"Evening Primrose: a, flower divested of calyx and corolla, to show the parts or fructification; b, tuberous root." — Chambers, 1881

Evening Primrose

"Evening Primrose: a, flower divested of calyx and corolla, to show the parts or fructification; b,…

The Yam is a starchy root cultivated as a food crop in certain areas in Asia and Africa.

Yam

The Yam is a starchy root cultivated as a food crop in certain areas in Asia and Africa.