Cryptotaenia canadensis.

Botanical name: 

Cryptotaenia canadensis DC. Umbelliferae. Honewort.

North America. This species is very generally cultivated in Japan. The tips are used as greens and to flavor soups; the blanched stems are used as a salad and a potherb; the root also is utilized.

Sturtevant's Edible Plants of the World, 1919, was edited by U. P. Hedrick.