Note to Hamlet, 4.7.170: "a grosser name"

Act 4, Scene 7, line 170
Orchis mascula, the wild orchid sometimes called "long purples," grows a double bulb, so that when it is pulled out of the ground it looks somewhat like a cock and balls, but I haven't been able to find exactly what the "grosser name" is.

Orchis mascula L.
Source: Schede di botanica: Orchis mascula L.