Guide stem

Guide Stem appears in Metroid Prime in the Canyon Cavern located in the Tallon Overworld of Tallon IV. It appears to be nothing more than a stalk with a glowing orange bulb on it. It is seen hanging on tree roots that descend underground. It seems to thrive in dark areas like the Saturnine. According to the Logbook it is a "Pervasive indigenous species of bioluminescent weed."