1、 Blade difference

The leaves of scallion are narrow linear, plump, bright green, about 20-30 cm long and 2-4 mm wide

The basal leaves of leek orchid are usually clustered with several, linear, flat and more like leek. They are about 15-30 cm long and 6-8 mm wider than the former

2、 The difference between flowers

Onion orchid is solitary at the top of the stem, with a Buddha flame bract like involucre. The involucre will be brownish red, the flower is white, and the outside will often be a little light red, almost without perianth tube

Leek orchid is also a flower solitary at the top of the stem, with a Buddha flame bract shaped involucre. The involucre is light purplish red, the flower color is rose red or pink, and the perianth tube is about 1-2.5 cm long. Perianth 6 lobes, obovate