is significantly higher and also has potential as a source of biodiesel. Varieties Four varieties have been recognized (under the species name Armeniaca sibirica): var. sibirica: The leaf blade and petiole are mostly bare. The flowers are single with a diameter of 1.5 to 2 cm. var. multipetala: The leaf blade and petiole are bald. The large flowers are 3 to 3.5 cm in diameter. It only grows on slopes at altitudes of about 400 meters in eastern Hebei province, China. var. pleniflora: The leaf blade and petiole are initially hairy. The flowers are 3 to 3.5 cm in diameter. It only grows in mountainous regions at altitudes of about 800 meters in western Liaoning province China. var. pubescens: The leaf blade and petiole are initially hairy, but later, only the ramifications of the veins on the underside of leaves are hairy. The flowers are single with a diameter of 1.5 to 2 cm. References External links Apricots Flora of China Flora of Eastern Asia Flora of Mongolia Flora of Siberia sibirica Plants described in 1753 Taxa named by Carl Linnaeus