Hesperis integrifolia Kuntze Matthiola crassifolia, the thick-leaved stock, is a species of plant in the family Brassicaceae.

Radical leaves pinnatifid, sinuate or entire, reaching 16 cm long.

Siliques 10 cm long over 4 mm wide, not tapered at apex.

The thick-leaved stock, which adorns the rocks of Ras-Beirut in particular as of February, is endemic to Lebanon.

Matthioli, the Italian physician and famous botanist of the sixteenth century.