Glowstem

Glowstems are used for scenery in Pikmin 2. They appear to Hocotatian explorers to be relatives of the Common Glowcap, but in actuality, these tiny lights are what are known as LEDs, or Light-emitting diodes. They are never seen above ground and can only be found in certain cave sublevels with a metallic layout. Despite the lack of insulation covering the live wires, glowstems pose no electrical threat, nor any other kind, to Pikmin or captains, and have been added to levels merely for aesthetic affect.

Olimar's Notes
Although they are obviously unrelated, the glowstem bears a striking resemblence to the street lights on Hocotate. It is highly possible that glowstems could be a relic of some unknown civilization beyond the scope of our imagination.

Louie's Notes
Inedible. Known effects include uncontrolable episodes of impromptu break dancing.

Pikmin:Redemption
There are new green, blue, and grey color variations