Alternaria alternata

This is a fungus, also called "soot fungus", which is known to cause "leaf spot" and other blights on trees and plants. It can also trigger asthma and upper respiratory infections in people.

Full: Alternaria alternata
Japanese: A. アルテルナータ, A. aruterunāta
Type: Fungus

Manga Notes:
If you don't wash your hands after contact, you'll become it's house. (Ch 04)

Story Details:
This is first seen in Itsuki Keizou Sensei's lab. Hasegawa Haruka demands that Sawaki Tadayasu prove his ability, these are seen in a petri dish culture. They are seen again in Misato Kaoru and Kawahama Takuma's dorm room.