Annual herb, roots are numerous, taproot, up-right stem. palmate leaf alternation, big and yellow flowers born in axil. capsule as cleat. favor warmth and light, strong heat resistance, not resistance frost, drought-enduring, bear wet, but envies the water. plant on good well drain soil.Tender fruits soft, lubrication, uniqueflavour, high of nutritional value, can cooking, fried and cold mix.