Edible tubers, Tubercules alimentaires. Purple woodsorrel, Oxalis purpurea, Jerusalem artichoke, Helianthus tuberosus, papalisa or olluco, Ullucus tuberosus, yamaimo or mountain yam, Dioscorea japonica, and prairie turnip, Psorealea esculenta. Handcoloured steel engraving by Corbie after a botanical illustration by Edouard Maubert from Pierre Oscar Reveil, A. Dupuis, Fr. Gerard and Francois Herincqs La Regne Vegetal: Horticulture: Jardin Potager et Jardin Fruitier, L. Guerin, Paris, 1864-1871.
Edible tubers, Tubercules alimentaires. Purple woodsorrel, Oxalis purpurea, Jerusalem artichoke, Helianthus tuberosus, papalisa or olluco, Ullucus tuberosus, yamaimo or mountain yam, Dioscorea japonica, and prairie turnip, Psorealea esculenta. Handcoloured steel engraving by Corbie after a botanical illustration by Edouard Maubert from Pierre Oscar Reveil, A. Dupuis, Fr. Gerard and Francois Herincqs La Regne Vegetal: Horticulture: Jardin Potager et Jardin Fruitier, L. Guerin, Paris, 1864-1871.