Aspergillus species


aspergillus brain abscess

FIG. 1. This is a low power photomicrograph of an H&E stained section of brain.


Aspergillus fumigatus

a. fumigatus
a fumigatus

FIG. 1. Young conidial head of Aspergillus fumigatus; note the phialides extend directly from the vesicle without an intervening metula.

FIG. 2. Aspergillus fumigatus in slide culture. Note how the phialides and conidia extend from the top half of the vesicle.

a fumigatus

Aspergillus flavus

a. flavus
a flavus

FIG. 1. Aspergillus flavus; note the phialides arise circumferentially from the globose vesicle.


Aspergillus niger

a. niger
a niger

FIG. 1. Aspergillus niger; note the phialides arise circumferentially and that black conidia obscure the vesicle.

FIG. 2. Aspergillus niger in slide culture. Note how black conidia extend circumferentially from and obscure the vesicle.

a niger

Aspergillus terreus

a. terreus
a terreus

FIG. 1. Aspergillus terreus.Note biseriate, "swept-forward" appearance


Aspergillus nidulus

a. nidulus
a nidulus

FIG. 1. Aspergillus nidulus in slide culture. Biseriate conidiogenesis is difficult to appreciate at this magnification.

FIG. 2. Aspergillus nidulus in slide culture. Biseriate conidiogenesis may be difficult to appreciate; metulae are indicated here by the arrowhead, phialides by the arrow.

a nidulus

Aspergillus glaucus


a glaucus

FIG. 1. Aspergillus glaucus. Note the similarity between A. glaucus and A. niger; the fruiting bodies of A. niger tend to be larger. Cleistothecia, not seen here, are found with A. glaucus but not A. niger


Aspergillus clavatus


a clavatus

FIG. 1. Aspergillus clavatus. Note the club-shaped vesicle


To examine other groups of hyalohyphomyces, follow the links below:


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Copyright © 2001, William McDonald, M.D.
Revised: 5 September 2002