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Sunflower white rust

Chromista: Oomycota: Peronosporea: Albuginales: Albuginaceae: Pustula tragopogonis (Pers.) Thines

Pustula tragopogonis – sunflower white rust

Synonyms: Albugo tragopogonis, Caeoma obtusatum, Cystopus cubicus, Cystopus tragopogonis, Pustula obtusata, Uredo candida, Uredo tragopogonis.

Common names: sunflower white rust, Goatsbeard white rust.

Extract from Wikipedia article: Pustula tragopogonis, the goatsbeard white rust, is an oomycete plant pathogen unrelated to fungal organisms.

Belarusian: Цыстопус казлабародавы.

Photos of this mushroom from East and Central Texas

Leaf of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, <A HREF="../date-en/2023-03-05.htm">March 5, 2023</A>
LinkLeaf of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
Location on mapsBurleson County, Texas, United States
Underside of a leaf of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, <A HREF="../date-en/2023-03-05.htm">March 5, 2023</A>
LinkUnderside of a leaf of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
Location on mapsBurleson County, Texas, United States
Spores (in KOH) of white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) from a leaf of squaw-weed (Senecio ampullaceus), collected near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
LinkSpores (in KOH) of white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) from a leaf of squaw-weed (Senecio ampullaceus), collected near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
Leaves of squaw-weed (Senecio ampullaceus) with light yellow areas on leaves caused by sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, <A HREF="../date-en/2023-03-06.htm">March 6, 2023</A>
LinkLeaves of squaw-weed (Senecio ampullaceus) with light yellow areas on leaves caused by sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
Location on maps23450 Farm-to-Market Road 1155, Washington, Texas 77880, United States
Squaw-weed (Senecio ampullaceus) with sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, <A HREF="../date-en/2023-03-06.htm">March 6, 2023</A>
LinkSquaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
Location on maps23450 Farm-to-Market Road 1155, Washington, Texas 77880, United States
Underside of a leaf of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, <A HREF="../date-en/2023-03-06.htm">March 6, 2023</A>
LinkUnderside of a leaf of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
Location on maps23450 Farm-to-Market Road 1155, Washington, Texas 77880, United States
Spores an conidia(?) (in KOH) of sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?), collected from white powdery stuff with web from underside leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos a day before. Texas, March 7, 2023
LinkSpores an conidia(?) (in KOH) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?), collected from white powdery stuff with web from underside leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos a day before. Texas, March 7, 2023
Spores (in Melzer) of sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) together with conidia of Alternaria leaf spot(?), collected from white powdery stuff with web from underside leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos a day before. Texas, March 7, 2023
LinkSpores (in Melzer) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) together with conidia of Alternaria leaf spot(?), collected from white powdery stuff with web from underside leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos a day before. Texas, March 7, 2023
Tissues (in Melzer) of sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?), collected from white powdery stuff with web from underside leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos a day before. Texas, March 7, 2023
LinkTissues (in Melzer) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?), collected from white powdery stuff with web from underside leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos a day before. Texas, March 7, 2023
Underside of leaves of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) in Lick Creek Park. College Station, Texas, <A HREF="../date-en/2023-03-20.htm">March 20, 2023</A>
LinkUnderside of leaves of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) in Lick Creek Park. College Station, Texas, March 20, 2023
Location on mapsYaupon Loop Trail, College Station, Brazos County, Texas, United States
Close-up of underside of leaves of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) in Lick Creek Park. College Station, Texas, <A HREF="../date-en/2023-03-20.htm">March 20, 2023</A>
LinkClose-up of underside of leaves of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) in Lick Creek Park. College Station, Texas, March 20, 2023
Location on mapsYaupon Loop Trail, College Station, Brazos County, Texas, United States
Leaves of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, <A HREF="../date-en/2024-02-17.htm">February 17, 2024</A>
LinkLeaves of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, February 17, 2024
Location on mapsYaupon Loop Trail, College Station, Brazos County, Texas, United States
Spores and tissues (at low magnification) of sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) from white spots on leaves of squaw-weed (Senecio ampullaceus) collected on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, February 17, 2024
LinkSpores and tissues (at low magnification) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) from white spots on leaves of squaw-weed (Senecio ampullaceus) collected on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, February 17, 2024
Spores (in Congo Red) of sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) from white spots on leaves of squaw-weed (Senecio ampullaceus) collected on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, February 17, 2024
LinkSpores (in Congo Red) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) from white spots on leaves of squaw-weed (Senecio ampullaceus) collected on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, February 17, 2024
Spores (in lugol) of sunflower white rust fungus <B>Pustula tragopogonis</B> (Pustula obtusata, Albugo tragopogonis)(?) from white spots on leaves of squaw-weed (Senecio ampullaceus) collected on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, February 17, 2024
LinkSpores (in lugol) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) from white spots on leaves of squaw-weed (Senecio ampullaceus) collected on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, February 17, 2024

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