#Tranzschelia
Tranzschelia pruni-spinosae ex Anemone ranunculoides

Beringhausen, NRW, Germany, 19.4.2026

#Rustfungus #Rostpilz #Phytopathology #FungiFriends
April 21, 2026 at 7:42 PM
På vitsippsblad kan man ibland finna en svamp som dels deformerar bladen och som bildar mörka prickar på undersidan av bladen. Ganska vanlig men naturligtvis väldigt förbisedd. Svampen heter sipprost Tranzschelia anemones
May 21, 2026 at 3:28 PM
April 3, 2025 at 9:09 AM
Today I found four different species on Wood Anemone:
Plasmoverna pygmaea,
Septoria sp. (I think),
Urocystis anemones, and
Tranzschelia anemones!
The last one is very pretty, lovely deep velvet brown. #FungiFriends
April 11, 2025 at 8:15 PM
Millésime 2025 de la désormais classique sortie "Vad'rouilles #ANY" aux Clayes-sous-Bois, en compagnie de collègues de @inrae-bioger.bsky.social : découverte d’une vingtaine d’espèces de #rouilles, dont #Uromyces ficariae, Uromyces poae s.l., #Puccinia albescens, et #Tranzschelia fusca.
April 13, 2025 at 11:59 AM
26 april: Om kollar vitsippsbestånden kan man se att vissa blad är högre och delvis deformerade. De är då angripna av rostsvampar. Detta är sipprost Tranzschelia anemones. Finns några arter till som är vanliga
#biologiskmångfald
April 26, 2024 at 4:56 AM
Plant Microfungi Tranzschelia pruni-spinosae and Phragmidium rubi-idaei Demonstrate Allergenic Capabilities in Mouse Models of Asthma

www.mdpi.com/1422-0067/27...
www.mdpi.com
February 8, 2026 at 10:12 PM
Second #rust on wood #anemone (Anemone nemorosa), caused by #Tranzschelia fusca (Saint-Léger en Yvelines, FR). Need to turn the leaves over to find it, thanks @MurielSuffert 😊. Telia completely cover the underside of infected leaves and release two-cell echinulated teliospores.
January 7, 2025 at 9:33 AM
Second #rust on wood #anemone (Anemone nemorosa), caused by #Tranzschelia fusca (Saint-Léger en Yvelines, FR). Need to turn the leaves over to find it, thanks @MurielSuffert 😊. Telia completely cover the underside of infected leaves and release two-cell echinulated teliospores.
January 8, 2025 at 9:14 PM
#Rust on #Anemone nemorosa, caused by #Tranzschelia fusca (syn. T. anemones), with telia releasing two-cell echinulated teliospores (Cléry-en-Vexin, FR).
January 7, 2025 at 9:59 AM
At the weekend I noticed a rust fungus on a plum tree, which I've just determined as Tranzschelia discolor. The spores are interesting to look at - the teliospores were two celled, the larger cell dark brown & very verrucose but attached to a paler, less spiky, one. Uredinospores were also present.
September 2, 2024 at 7:03 PM
Could be also Tranzschelia discolor (different size/shape of the two cells of the teleutospore). Difficult to be sure...
January 8, 2025 at 11:33 PM
#Rust of #Prunus sp. caused by #Tranzschelia pruni-spinosae, with uredinia and urediniospores ('Causse' of Saint-Chels, FR).
January 8, 2025 at 10:27 PM
(2) #Tranzschelia pruni-spinosae on #Prunus sp. (Cajarc, FR).
January 8, 2025 at 10:27 PM
#Rust on plum tree (#Prunus domestica) caused by #Tranzschelia sp. (likely T. discolor rather that T. pruni-spinosae, thanks @pascal_frey 😉), here with urediniospores and two-celled teliospores developped in fascicles (Les Clayes-sous-Bois, FR).

x.com/pascal_frey/st…
January 8, 2025 at 8:49 PM
#Rust on #Prunus spinosa caused by #Tranzschelia sp. (T. pruni-spinosae or T. discolor), here with urediniospores (Saint-Père, FR).
January 8, 2025 at 8:47 PM
#Rust of blackthorn (#Prunus spinosa), likely caused by #Tranzschelia discolor, here with urediniospores, paraphyses and teliospores in fascicle, Les Clayes-sous-Bois, FR.
January 7, 2025 at 10:23 PM
.@RPilze, indeed I just observed teliospores in fascicule (see the two pictures below). This is a determining criterion for Tranzschelia discolor (Lopez-Franco & Hennen, 1990; doi:10.2307/2419155), with the difference in shape and color of the two cells.
January 7, 2025 at 10:19 PM
Could be also Tranzschelia discolor (different size/shape of the two cells of the teleutospore). Difficult to be sure...
January 7, 2025 at 10:19 PM
#Rust of #Prunus sp. caused by #Tranzschelia pruni-spinosae, here with black telia releasing strongly verrucose teleutospores (two-celled, but easily separating), Millau, FR.

x.com/wheatpath/stat…
January 7, 2025 at 10:19 PM
#Rust of #Prunus sp. caused by #Tranzschelia pruni-spinosae, with uredinia and urediniospores ('Causse' of Saint-Chels, FR).
January 7, 2025 at 10:15 PM
(2) #Tranzschelia pruni-spinosae on #Prunus sp. (Cajarc, FR).
January 7, 2025 at 10:15 PM
Double trouble : this wood anemone (#Anemone nemorosa) is simultaneously infected by the #rust fungus #Tranzschelia fusca and the #smut fungus #Urocystis anemones (Velars-sur-Ouche, FR).
January 7, 2025 at 9:03 PM
#Rust of #Prunus domestica caused by #Tranzschelia discolor, here with fascicled teliospores and some urediniospores (Millau, FR).
January 7, 2025 at 10:44 AM