dematiaceous molds

which molds are saprobes

Curvularia and Alternaria

how many cells are in Curvularia macroconidia

4-6 cells

what part of the Curvularia cells are larger

the center cell is larger

what does the Curvularia appearance give?

a curved appearance

what does the Alternaria macroconidia have?

transverse and longitudinal septa in chains

where do the germ tubes form in Bipolaris

they form along conidial axis

what is Drechslera similar to

Bipolaris

what is the characteristic feature of Bipolaris

slightly protruding

• “Squared Off” Hilum

what kind of colonies does Aureobasidium produce?

white and black yeast-like colonies

what do the Aureobasidium hyphae appear as and what is it similar to

large segmented hyphae

• appear as Oreo cookies

what kinds of cells are specific to Cladosporium

shield cells

what do the conidia of Cladosporium look like

branching conidiophores with chains or “tree-like” conidia

what is left after Cladosporium attaches

scars

what mold looks like a vase of flowers

Phialophora verrucosa

what are the apex characteristics of Phialophora verrucosa

• flask shaped phialides with distinct collarettes

• conidia in clusters

what is the initial appearance of Fonsecaea pedrosoi

rabbit ears

what is the characteristic of Fonsecaea pedrosoi

short chains of conidia from sides of conidiophores

what are the types of sporulation that could be seen for Fonsecaea pedrosoi

• Acrotheca

• Rhinocladiella

• Cladosporium

• Phialophora

what type of sporulation is seen from Cladosporium

Cladosporium type

what type of sporulation is seen from Phialophora verrucosa

Phialoophora type sporulation

what does Exophiala jeanselmei initially form, and what does it eventually from?

initial: black yeast cells

eventually: formed hyphae

does Exophiala jeanselmei grow at 40C

NO

what is an important note about what Exophiala jeanselmei forms

forms conidiophores which terminate in tapered annelids

does Wangiella dermatitidis grow at 40C

yes

what does Wangiella dermatitidis initially form, and what does it eventually form

initial: black yeast cells

eventually: forms hyphae

what are the main characteristics of Pseudallescheria boydii

• lollipop forms

• Cleistothecia

what can Pseudallescheria boydii usually get confused with

Blastomyces mycelial phase

what is illustrated

Curvularia

what is illustrated

Alternaria

what is illustrated

Bipolaris

what is illustrated

Aureobasidium

what is illustrated

Cladosporium

what is illustrated

Phialophora verrucosa

what is illustrated

Fonsecaea pedrosi

what is illustrated

Exophilia jeanselmei

what is illustrated

Wangiella dermatitidis

what is illustrated

Pseudallescheria boydii