Spores from a specialized fungus that only parasitizes this plant. eol.org/pages/161363
11.03.2026 18:16
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Spores from a specialized fungus that only parasitizes this plant. eol.org/pages/161363
underside of Trientalis leaves covered in white spores of the smut fungus.
Trientalis plant looking pale due to the smut fungus infection
conidia of Urocystis trientalis. The spores are ca 9 um in length
The anamorph stage of the same Urocystis trientalis; strikingly different looking symptoms. Near Winterberg, Germany, June 2025. #fungifriends #smutfungi
Poterium sanguisorba; underside of leaf with two types of Phragmidium rust spores
microscopic image of teliospores of Phragmidium sanguisorbae
microscopic image of teliospores of Phragmidium sanguisorbae
Phragmidium sanguisorbae (Kleine-pimpernelroest in Dutch) on Poterium sanguisorba (Kleine pimpernel). Multicelled dark teliospores, 60-70 um in length. Found this weekend in the Kennemerduinen near Haarlem (NL). #fungifriends #rustfungi
An historic black and white illustration of a paper nautilus floating on the ocean. There are boats, a city and hills in the background.
🎉 Huge news for BHL: The Field Museum is taking over the hosting of BHL’s website, servers & infrastructure, ensuring long-term stability and access for its 63+ million pages of open biodiversity literature. Learn more:
blog.biodiversitylibrary.org/2026/02/tran...
#BHLTransition #ILoveBHL 🌍 📚 🧪
A bit of sun yesterday and Mibora minima (dwerggras) flowering in the dunes of South Holland. Today it snowed again. No spring yet.
The EU will #GiveGenesAChance! 🇪🇺💚
www.europarl.europa.eu/news/en/pres...
#Trilogue #NGTs
Puccinia silai ex Silaum silaus
#Silaumsilaus #Silaum #GewöhnlicheWiesensilge #peppersaxifrage #Cumindesprés #Pucciniasilai #Puccinia #Phytopathology #Rustfungus #Rostpilz #mushroom #mushrooms #fungus #fungi #pilz #pilze #champignons #champignon #nature #natur #FungiFriends
Puccinia carniolica ex Dichoropetalum carvifolia
#Dichoropetalumcarvifolia #Dichoropetalum #KümmelHaarstrang #Pucciniacarniolica #Puccinia #Rostpilz #Rustfungus #mushroom #mushrooms #fungus #fungi #pilz #pilze #champignons #champignon #nature #natur #FungiFriends #Phytopathology
Dit heet nu Grauwe rietveeg in het Nederlands en Utrechtiana arundinacea op zijn wetenschappelijk. Vroeger Deightoniella (en volgens sommige auteurs nog steeds)
Yet another case of Uromyces plumbarius on Oenothera lindheimeri (Gaura) in the Paris region.
#Rust #RustFungus #UrbanPlantHealth #PlantHealthDay
@wheatpath.bsky.social
@erikslootweg.bsky.social
www.biorxiv.org/content/10.1...
Net verschenen in natuurtijdschriften. Ons 15-jarig onderzoek naar woladventieven langs de Grensmaas.
natuurtijdschriften.nl/pub/1030013/...
Wonder if for this species it could be useful for spreading the basidospores or if it is just a remnant from when it still had a complete life cycle and alternative host.
T. albidum? Ik heb een plantje in de tuin, maar ondanks een paar bloemen elk jaar heeft die zich nog niet uitgezaaid.
If first found this rust on this location in 2018. Interesting to find it on almost the same location 7 years later. The host is quite frequent in the surrounding area due to the wast from the former zinc mine, but I saw only a few infected plants.
microscopic image of teleospores of Puccinia thlaspeos
underside of leaf of Noccaea caerulescens with telia
Noccaea caerulescens with one healthy flowering stem and five stems deformed by the rust Puccinia thlaspeos
The rust Puccinia thlaspeos on Noccaea caerulescens. The rust infection changes the morphology of the plant; instead of flowering stems its stems are full of yellowish leaves covered with telea on the underside. Here on soil heavily contaminated with heavy metals in Kelmis, Belgium.
I think it is Veronica peregrina.
Ik zou van de waardplant ook vogelmelk maken en dan past het helemaal. De geelster en vogelmelk zouden door elkaar kunnen staan. Beeld voor Puccinia liliacearum klopt iig mooi.
De rest vd plant staat vast aan de andere kant vd schutting. Maar zou leuk zijn als deze scheuten blijven staan.
Tricyrtis?
Happy to share this preprint confirming "Uromyces plumbarius first reported on Oenothera lindheimeri in Europe with widespread distribution and association with the rust hyperparasite Sphaerellopsis sp." Thanks @pascal-frey.bsky.social & @erikslootweg.bsky.social!
doi.org/10.1101/2025...
Urocystis eranthidis ex Eranthis hyemalis
#Urocystiseranthidis #Urocystis #Eranthishyemalis #Eranthis #Winterling #winteraconite #Eranthedhiver #pièdigallo #Brandpilz #smutfungus #Brand #smut #Pilz #fungus #phytopathology #nature #FungiFriends
Do they suggest a valid name for G. coarctata? I still have some growing in my garden (not recommended, it is quite weedy).
last year Filip Verloove published a paper on American cudweeds in the Netherlands and Belgium in Gorteria. ( natuurtijdschriften.nl/pub/1021834 ). Might be interesting. Certainly not an easy group of plants.
Its a few months now since I collected this Fusarium. Do you think it can still be cultured from dried material? Otherwise I can always try to find it again next year at the same location.
Sclerotium of Claviceps sp. on Glyceria maxima flower covered with orange Fusarium heterosporum
macroconidia of Fusarium heterosporum showing the sizes of the spores (ca 4 x 30 micrometer).
banana-shaped macro-conidia of Fusarium heterosporum
found two Claviceps-parasitising fungi on the same plant in September this year. Fusarium heterosporum which colors the whole Claviceps sclerotium orange was the second. It has nice banana-shaped 3-septate conidia. #fungifriends
spores of the Claviceps parasitising fungus Epicoccum andropogonis
brain-like fruiting structure of Epicoccum andropogonis
Epicoccum andropogonis, a fungus parasitising Claviceps, a fungal parasite of grasses. Here on Glyceria maxima (Liesgras). One of two Claviceps parasites I found this day in September this year on the same plant. I really like the brainlike structure (and its old name Cerebella). #Fungifriends
Ragnhildiana ferruginea ( www.mycobank.org/page/Name%20... ) on Artemisia vulgaris (Bijvoet). Common, but underrecorded in the Netherlands. Forms brown fuzzy spots on the underside of the leaves. Conidiospores light brown and mostly 1-3 septate.
Ik heb vandaag nog eens goed gezocht in het Wijboschbroek in Brabant, maar heb daar op boskortsteel de gallen niet gevonden (wel Puccinia brachipodii, korsteelroest). Ben benieuwd waar de noordgrens van de verspreiding van de Kortsteelgalmug precies ligt.
Ter afsluiting: Kortsteelgalmug in 25 kmhokken. Van zeer zeldzaam naar zeldzaam.