Hair Like Usnea Lichen
The Hair-like Usnea, Usnea trichodea, Ach. Habit and habitat.-On trees in long waving tufts.
Vegetative organ (thallus).-Pendulous, greatly elongated.
The few secondary branches are smooth, bearing numerous lax fibrils of variable length, cross-section circular (terete).
Fruiting organ (apothecia).-Small, disk pale flesh-colour with margin bearing very few fibrils.
Name.-The specific name trichodea is derived from the Greek, resembling hair, and refers to the thallus.