In an attempt to set down the bases of a rational classification of Fungi Imperfecti, Vuillemin (1910a) defined a group in which ‘the branch that serves as immediate support for the conidia often has the form of a flask with a venter and a neck ... which ... is called phialide (phiala, flask or bottle). The typical phialide has conidia formed exclusively at the end of the neck.’