Here is part of a blade of lemon grass (Cymbopogon citratus). It makes for a delicious lemony tea without the tartness of lemon, and is considered to be anxiolytic, antifungal, and a repellent for biting flies. Included is a 0.5 mm diameter pencil lead for scale.
Equipment used: Canon EOS Rebel T5i with 49 mm long extension tube.