- Fungi Including Lichens
- ›Ascomycete Fungi
- ›Sac Fungi and Lichens
- ›Dothideomycetes
- ›Pleosporomycetidae
- ›Pleosporales
- ›Pleosporaceae
Alternaria
Alternaria is a genus of fungi that are found worldwide. Alternaria species are known as major plant pathogens. They are also common allergens in humans, growing indoors and causing hay fever or hypersensitivity reactions that sometimes lead to asthma. They are present in the human mycobiome and readily cause opportunistic infections in immunocompromised people such as AIDS patients.
There were about 600 known species in the genus in 2023 (although in 2008 the Dictionary of Fungi only listed 299). They are ubiquitous in the environment and are a natural part of funga almost everywhere. They are normal agents of decay and decomposition. The spores are airborne and found in the soil and water, as well as indoors and on objects. The club-shaped spores are single or form long chains. They can grow thick colonies which are usually green, black, or gray.
60 branches of this genus, most-observed first
Alternaria alternata
speciesAlternaria alternata
Early Blight
speciesAlternaria solani
Alternaria catalpae
speciesAlternaria catalpae
Alternaria zinniae
speciesAlternaria zinniae
Alternaria tenuissima
speciesAlternaria tenuissima
Alternaria brassicae
speciesAlternaria brassicae
Macrosporium asiminae
speciesMacrosporium asiminae
Alternaria tomatophila
speciesAlternaria tomatophila
Alternaria sonchi
speciesAlternaria sonchi
Alternaria infectoria
speciesAlternaria infectoria
Alternaria gomphrenae
speciesAlternaria gomphrenae
Alternaria nobilis
speciesAlternaria nobilis
Alternaria crassa
speciesAlternaria crassa
Alternaria sp. 'CoSp-1'
speciesAlternaria sp. 'CoSp-1'
Alternaria calycanthi
speciesAlternaria calycanthi
Alternaria cucumerina
speciesAlternaria cucumerina
Alternaria brassicicola
speciesAlternaria brassicicola
Alternaria obtusa
speciesAlternaria obtusa
Acroconidiella eschscholziae
speciesAcroconidiella eschscholziae
Alternaria japonica
speciesAlternaria japonica
Alternaria citri
speciesAlternaria citri
Alternaria dauci
speciesAlternaria dauci
Alternaria passiflorae
speciesAlternaria passiflorae
Alternaria cheiranthi
speciesAlternaria cheiranthi
Alternaria argyranthemi
speciesAlternaria argyranthemi
Alternaria mali
speciesAlternaria mali
Alternaria saponariae
speciesAlternaria saponariae
Alternaria dichondrae
speciesAlternaria dichondrae
Alternaria cinerariae
speciesAlternaria cinerariae
Alternaria panax
speciesAlternaria panax
Alternaria longipes
speciesAlternaria longipes
Alternaria calendulae
speciesAlternaria calendulae
Alternaria euphorbiicola
speciesAlternaria euphorbiicola
Alternaria alstroemeriae
speciesAlternaria alstroemeriae
Alternaria violae
speciesAlternaria violae
Alternaria alternantherae
speciesAlternaria alternantherae
Alternaria echinaceae
speciesAlternaria echinaceae
Alternaria obtecta
speciesAlternaria obtecta
Alternaria tomato
speciesAlternaria tomato
Alternaria ramulosa
speciesAlternaria ramulosa
Alternaria cerealis
speciesAlternaria cerealis
Alternaria penicillata
speciesAlternaria penicillata
Alternaria embellisia
speciesAlternaria embellisia
Alternaria angustiovoide
speciesAlternaria angustiovoide
Alternaria dianthi
speciesAlternaria dianthi
Alternaria papavericola
speciesAlternaria papavericola
Embellisia dennisii
speciesEmbellisia dennisii
Alternaria cucurbitae
speciesAlternaria cucurbitae
Alternaria nelumbii
speciesAlternaria nelumbii
Alternaria radicina
speciesAlternaria radicina
Alternaria tenuis
speciesAlternaria tenuis
Alternaria longissima
speciesAlternaria longissima
Alternaria solani-nigri
speciesAlternaria solani-nigri
Alternaria cyphomandrae
speciesAlternaria cyphomandrae
Alternaria thunbergiae
speciesAlternaria thunbergiae
Alternaria porri
speciesAlternaria porri
Alternaria anagallidis
speciesAlternaria anagallidis
Alternaria triticina
speciesAlternaria triticina
Alternaria danida
speciesAlternaria danida
Alternaria amaranthi
speciesAlternaria amaranthi
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Alternaria in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 327996.