There is a kind of wild vegetables leaves and chestnut is very similar, open purple flowers, blanch can be cold mix, taste slightly bitter, we often use to do the slurry vegetables, there are high people know the scientific name?

Ion grass Chorispora tenella genus: Chorispora tenella genus name: Chorispora tenella genus name: Chorispora tenella. Chorispora?tenella? Family name: Cruciferae? Cruciferae? Genus Species Name: ?Chorispora?tenella?(Pall.)?DC.?　　[? Morphological characters and distribution]] Chorisis tenella is a species of the genus Choris.　　Chorispora?tenella?(Pall.)?DC.?　　Herbs annual, 15-40 cm tall, sparsely capitate-short glandular hairy throughout. Stems obliquely upward or diffuse. Branched from base. Basal leaves shortly petiolate, leaf blade oblong, 3-4 cm long, 4-6 mm wide; lower stem leaves y undulate-dentate; upper stem leaves dentate or subentire, sparsely cephalic short glandular hairy, racemes sparse and short, fruiting elongated; flowers purple, sepals light blue-purple, white-margined, oblong, inner sepal base slightly saccate, 4-5 mm long; petals narrowly obovate-oblong or oblong-spatulate, 9-11 mm long; base with long claw. 11 mm, base long clawed, limb narrowly obovate, ca. 4 mm; stamens separate, with an oblong nectary on each side of the medial base of the short stamens; ovary sessile. Long-horned fruit finely terete, 1.5-3 cm long, straight or slightly curved: with transverse nodes, not dehiscent, but falling off node by node, apex with a long beak, beak 10-20 mm long. Seeds flattened, margined, shedding with the nodes, 2 seeds per node, cotyledonary margins leaning.　　Born in ditch edges, grasslands, and fields. Distributed in China's northern and northwestern provinces and districts, northern and southwestern Asia, European countries are also distributed.　　Young plants with boiling water fried can be cold or fried food.

We Guanzhong area it is also called caper.