Photos / Sounds

Observer

rolandwirth

Date

August 10, 2023 04:58 PM AKDT

Description

Maybe Podosphaera aphanis or something related?

Photos / Sounds

What

Live Oak Witches' Broom Fungus (Cystotheca lanestris)

Observer

beartracker

Date

August 30, 2020 04:46 PM PDT

Description

Rust on a canyon live oak

Photos / Sounds

What

Legume Powdery Mildew Group (Complex Erysiphe pisi)

Observer

guryonatan

Date

June 6, 2024 04:13 PM IDT

Description

Photos / Sounds

What

Barberry Powdery Mildew (Erysiphe berberidis)

Date

May 30, 2024 10:23 AM PDT

Photos / Sounds

Observer

jeison2

Date

May 31, 2024 10:40 AM -05

Photos / Sounds

Observer

carnifex

Date

November 13, 2022 03:47 PM CET

Description

ex Spiraea x vanhouttei

Photos / Sounds

Observer

emmashelton

Date

February 21, 2024 02:25 PM PST

Description

I think it was on a Coast Live Oak leaf in the leaf litter.

Photos / Sounds

What

Life (Life)

Observer

bradjunswick

Date

May 10, 2024 06:42 PM PDT

Photos / Sounds

What

Black Maple (Acer nigrum)

Observer

macgiolamhaoil

Date

August 2, 2019 04:51 PM UTC

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

reptipods

Date

September 2, 2023 03:08 PM PDT

Description

On heterotheca grandiflora

Photos / Sounds

What

Verbena Powdery Mildew (Golovinomyces verbenae)

Observer

zitserm

Date

October 3, 2023 05:30 PM EDT

Description

On Buddleja davidii (Butterfly bush)

Photos / Sounds

What

Dutch Elm Disease (Ophiostoma ulmi)

Observer

marco_vicariotto

Date

May 12, 2024 09:45 AM CEST

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Date

May 2024

Description

On multiple leaves of Baccharis sarothroides.

Photos / Sounds

What

Oak Powdery Mildew (Erysiphe alphitoides)

Observer

crowntipped

Date

August 2023

Description

Last 2 pictures are underside. On oak.

Photos / Sounds

Observer

nschwab

Date

January 6, 2024 04:16 PM EET

Photos / Sounds

Observer

tylbrooks1998

Date

May 2, 2024 01:54 PM EDT

Description

Senna mildew

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

david99

Date

May 4, 2024 11:54 AM PDT

Description

On Figwort

Photos / Sounds

What

Clover Powdery Mildew (Erysiphe trifoliorum)

Observer

dbarber

Date

September 17, 2023 01:19 PM EDT

Description

On American wisteria

Photos / Sounds

What

Oak Powdery Mildew (Erysiphe alphitoides)

Observer

sls42

Date

October 30, 2023 08:52 AM CDT

Photos / Sounds

What

Plane Tree Powdery Mildew (Erysiphe platani)

Observer

abbyyepez

Date

May 9, 2024 10:34 AM -05

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

ikskyrskobl

Date

August 23, 2021 08:19 AM +13

Description

Gypsophila paniculata

Photos / Sounds

Observer

sbrobeson

Date

April 9, 2023 05:46 PM CDT
Fungi

Photos / Sounds

What

Fungi Including Lichens (Kingdom Fungi)

Observer

epic2112

Date

February 22, 2024 12:09 PM EST

Photos / Sounds

Observer

tranquilitypeace

Date

February 26, 2024 08:54 AM CST

Photos / Sounds

What

Oak Powdery Mildew (Erysiphe alphitoides)

Observer

oeserak

Date

October 8, 2023 08:04 AM CDT

Photos / Sounds

What

Oak Powdery Mildew (Erysiphe alphitoides)

Observer

cliona4

Date

October 4, 2023 02:28 PM EDT

Photos / Sounds

Observer

razaborigen

Date

April 6, 2021 08:12 AM -05

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

kastani

Date

April 30, 2024 12:37 PM +05

Description

ex Acer negundo

Photos / Sounds

What

Prickly Sowthistle (Sonchus asper)

Observer

mrostrowski

Date

May 2, 2024 01:50 PM CDT

Photos / Sounds

Observer

cavogt

Date

October 12, 2017 09:52 AM -05

Photos / Sounds

What

American Tar Spot (Rhytisma americanum)

Observer

nfurlan

Date

April 10, 2024 01:56 PM CDT

Description

Acer sp.

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

sebotaniste

Date

September 30, 2023 09:22 AM CEST

Description

On Poterium sanguisorba (syn : Sanguisorba minor)

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

komalt1

Date

April 2, 2024 01:38 PM PDT

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

misumeta

Date

April 5, 2024 05:32 PM CEST

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

graysquirrel

Date

January 28, 2020 12:43 PM PST

Photos / Sounds

What

Cutleaf Grapefern (Sceptridium dissectum)

Observer

eseckel

Date

April 11, 2024 01:52 PM EDT

Photos / Sounds

What

Black Spot of Elm (Stegophora ulmea)

Observer

brettjackson

Date

December 26, 2020 04:35 PM CST

Photos / Sounds

Date

August 2022

Photos / Sounds

Date

January 20, 2024 04:14 PM -05

Description

Por favor me ayudan con la ID de esta planta.

Photos / Sounds

Observer

trazos_de_enea

Date

April 19, 2024 12:49 PM -05

Photos / Sounds

What

Higher Ascomycetes (Subphylum Pezizomycotina)

Observer

mano2013myl

Date

March 31, 2024 03:50 PM BST

Photos / Sounds

What

Life (Life)

Observer

mybraincells

Date

March 31, 2024 06:38 PM EDT

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

david99

Date

April 16, 2024 09:06 PM PDT

Description

On figwort

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

joknight_nz

Date

December 17, 2023 05:28 PM NZDT

Description

On vervain.

Photos / Sounds

What

Umbellifer Powdery Mildew (Erysiphe heraclei)

Observer

dirkm

Date

August 20, 2023 12:02 PM CEST

Description

host plant: Pastinaca sativa

Photos / Sounds

Observer

huang__huang

Date

November 2023

Place

Private

Photos / Sounds

Observer

savvaszafeiriou

Date

July 12, 2020 10:18 AM +13

Description

On Castanea sativa

Photos / Sounds

What

Black Oak (Quercus velutina)

Observer

rynxs

Date

August 2023

Photos / Sounds

Observer

brendonreidy1

Date

October 3, 2020 04:56 PM UTC

Photos / Sounds

What

Ash Anthracnose (Plagiostoma fraxini)

Observer

erinhenson

Date

October 11, 2022 09:43 PM EDT

Photos / Sounds

Observer

andreyllanos

Date

March 11, 2020 09:33 AM -05

Photos / Sounds

What

Honeysuckle Powdery Mildew (Erysiphe lonicerae)

Observer

carnifex

Date

December 26, 2022 04:54 PM CET

Description

Tags

Photos / Sounds

What

Ascomycete Fungi (Phylum Ascomycota)

Observer

reago

Date

November 7, 2023 11:40 AM PST

Description

on Rhaphiolepis indica leaves (?) maybe

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

yuriysokolov73

Date

August 12, 2022 04:59 PM MSK

Description

Delphinium

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

toxmace

Date

March 23, 2024 01:06 PM EDT

Photos / Sounds

What

American Plane (Platanus occidentalis)

Observer

tom1548

Date

November 3, 2023 03:09 PM EDT

Description

Guessing

Photos / Sounds

What

Morning-Glories (Genus Ipomoea)

Observer

m_nicolas

Date

February 15, 2024 01:32 PM WAT

Photos / Sounds

What

Morning-Glories (Genus Ipomoea)

Observer

albertogg

Date

February 10, 2009 11:06 AM CST

Photos / Sounds

What

Sweet Potato (Ipomoea batatas)

Observer

michellem_

Date

January 4, 2023 10:09 AM -05

Description

Debido a la forma de su hoja, debe pertenecer a una variedad dentro de esta especie.

Photos / Sounds

What

Beech Erineum Mite (Acalitus ferrugineum)

Observer

jasondombroskie

Date

October 12, 2023 02:08 PM EDT

Photos / Sounds

What

Beech Erineum Mite (Acalitus ferrugineum)

Observer

currenfrasch

Date

June 2023

Photos / Sounds

What

Beech Erineum Mite (Acalitus ferrugineum)

Observer

willfreyman

Date

July 8, 2023 01:35 PM CDT

Photos / Sounds

What

Beech Erineum Mite (Acalitus ferrugineum)

Observer

jerseygina

Date

May 22, 2023 11:20 AM EDT

Photos / Sounds

What

Beech Erineum Mite (Acalitus ferrugineum)

Observer

esummerbell

Date

May 28, 2023 06:36 PM EDT

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

neontetraploid

Date

June 19, 2023 07:30 AM PDT

Description

on California croton

Photos / Sounds

What

Pea Powdery Mildew (Erysiphe pisi)

Observer

nschwab

Date

October 4, 2023 06:06 PM CEST

Description

ex Trifolium pratense

Photos / Sounds

Observer

gen_ok

Date

August 18, 2015 12:39 PM MSK

Description

on Euphrasia sp.

Photos / Sounds

Observer

jamie-aa

Date

March 16, 2024 02:31 PM GMT

Description

on Bear's Breeches, Acanthus mollis

Photos / Sounds

Observer

georgiamies

Date

October 9, 2020 11:48 AM EDT

Description

Powdery mildew. Growing on leaves of a sunflower plant. White color and very widespread. I collected a sample.

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

gwark

Date

March 25, 2024 09:04 PM AKDT

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

matt227

Date

October 8, 2023 10:51 AM CDT

Description

On figwort

Photos / Sounds

Observer

jaykeller

Date

December 8, 2018 03:31 PM PST

Photos / Sounds

Observer

sedge

Date

April 11, 2020 11:45 AM CDT

Photos / Sounds

Date

September 9, 2023 10:25 AM CST

Description

Sobre hoja de Erythrina americana - colorín.

Fungi

Photos / Sounds

What

Fungi Including Lichens (Kingdom Fungi)

Observer

francisco3_

Date

December 20, 2013

Photos / Sounds

What

Oak Powdery Mildew (Erysiphe alphitoides)

Observer

drew_meyer

Date

August 21, 2022 11:41 AM PDT

Description

Host is Quercus sadleriana

Photos / Sounds

What

Oak Powdery Mildew (Erysiphe alphitoides)

Observer

chloe_and_trevor

Date

September 5, 2022 08:12 AM PDT

Description

On Quercus sadleriana. Or something nearby.

Photos / Sounds

Observer

dvdkssrw

Date

December 6, 2019 02:58 PM CST

Description

On what I took to be Euphorbia graminea.

Photos / Sounds

Observer

kai_schablewski

Date

June 25, 2023 04:33 PM CEST

Description

ex Ribes spec.

Photos / Sounds

What

Life (Life)

Observer

ldygwn2

Date

September 3, 2021 02:11 PM CDT

Description

Speckling damage, yellowing and dying off of leaves

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

joknight_nz

Date

January 21, 2024 06:57 PM NZDT

Description

On wall speedwell.

Photos / Sounds

Observer

karla111

Date

October 23, 2018 11:32 PM CDT

Description

Reino fungí

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

jackson_chu

Date

October 7, 2023 02:33 PM PDT

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

fmcghee

Date

May 24, 2022 01:17 PM PDT

Photos / Sounds

Observer

jocean

Date

December 3, 2023 09:18 AM -05

Photos / Sounds

Observer

saherron

Date

January 26, 2024 10:20 AM EST

Description

Systemic mildew on leaves of Quercus myrtifolia.

Photos / Sounds

No photos or sounds

What

Roses, Elms, Figs, and Allies (Order Rosales)

Observer

lizodu

Date

October 20, 2023 02:54 PM EDT

Photos / Sounds

Observer

savvaszafeiriou

Date

April 11, 2020 11:48 AM +13

Photos / Sounds

What

Powdery Mildews (Family Erysiphaceae)

Observer

ziggypop74

Date

August 6, 2022 10:28 AM EDT

Description

Cucurbits DM

Photos / Sounds

What

Spindletree Powdery Mildew (Erysiphe euonymicola)

Observer

chilipossum

Date

December 6, 2023 12:41 PM PST

Photos / Sounds

What

Maple Mildew (Sawadaea bicornis)

Observer

entoandrew

Date

July 2021

Description

On Maple?

Photos / Sounds

Observer

afsj

Date

December 7, 2018 01:24 PM +05

Description

Pega pega

Photos / Sounds

Observer

natujuano

Date

December 7, 2020 05:06 PM EST

Photos / Sounds

Observer

pitiisparamensis

Date

January 11, 2021 09:44 AM EST

Photos / Sounds

Observer

daniel1758

Date

March 5, 2023 05:16 PM -05

Photos / Sounds

Date

October 12, 2020 06:29 AM -05

Photos / Sounds

Observer

yerbasanta

Date

June 8, 2018 04:47 PM PDT

Description

On top of phacelia malvifolia leaves

Photos / Sounds

Observer

hassea

Date

September 9, 2022 01:45 PM -05