What is "black salsify"

n. A perennial member of the sunflower family (Asteraceae), cultivated as a root vegetable; (taxlink Scorzonera hispanica species noshow=1).

1. n. perennial south European herb having narrow entire leaves and solitary yellow flower heads and long black-skinned carrot-shaped edible roots [syn: viper's grass, scorzonera, Scorzonera hispanica]

2. long black-skinned salsify [syn: scorzonera]