Uromyces dactylidis G.H. Otth
(Celandine Clustercup Rust)

Taxonomic hierarchy:
SpeciesUromyces dactylidis (Celandine Clustercup Rust)
GenusUromyces (a genus of rust fungi)
FamilyPUCCINIACEAE (a family of rust fungi)
OrderPUCCINIALES (rust fungi)
ClassPUCCINIOMYCETES (rust fungi etc)
SubphylumPUCCINIOMYCOTINA (rust fungi etc)
PhylumBASIDIOMYCOTA (spore droppers, basidiomycetes)
KingdomFUNGI (true fungi)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Uromyces dactylidis (Celandine Clustercup Rust) :
1: Uromyces dactylidis (Celandine Clustercup Rust) IDENTIFICATION UNCERTAIN
4 Jun 2010 OSGR: SY78 50° 40’ N, 2° 20’ W Vice County: Dorset (VC 9) England
Aecia on Bulbous Buttercup
Image 1: Host leaf - top surface with aecial galls - black backgroundImage 2: Host leaf - under surface with aecia on galls - black backgroundImage 3: Cluster cups on galls on under surface of host leaf - enlarged - black backgroundImage 4: Cluster cups on galls on under surface of host leaf - highly enlarged - black backgroundImage 5: Cluster cups on galls on under surface of host leaf - highly enlarged - black background (2)Image 6: Clusters cups on leaf under surface - highly enlarged - black backgroundImage 7: Clusters cups on leaf under surface - highly enlarged - black background (2)Image 8: Clusters cups on leaf under surface - highly enlarged - black background (3)Image 9: Clusters cups on leaf under surface - highly enlarged - black background (4)Image 10: Clusters cups on leaf under surface - magnified - black backgroundImage 11: Clusters cups on leaf under surface - magnified - black background (2)Image 12: Clusters cups on leaf under surface - magnified - black background (3)Image 13: Pycnia on galls on top surface of host leaf - enlarged - black backgroundImage 14: Pycnia on galls on top surface of host leaf - highly enlarged - black backgroundImage 15: Aeciospores - magnifiedImage 16: Aeciospores - highly magnifiedImage 17: Aeciospores - highly magnified (2)Image 18: Aeciospores - highly magnified (3)Image 19: Aecium - microscope low magnificationImage 20: Peridial cell - highly magnifiedImage 21: Peridial cells - magnifiedImage 22: Peridial cells - highly magnifiedImage 23: Peridial cells - highly magnified (2)Image 24: Peridial cells - highly magnified (3)Image 25: Peridial cells - highly magnified (4)
2: Uromyces dactylidis (Celandine Clustercup Rust)
18 May 2010 OSGR: SK15 53° 10’ N, 1° 50’ W Vice County: Derby (VC 57) England
Uromyces ficariae (telia), U. dactylidis (aecia) and Entyloma ficariae on Lesser Celandine
Image 1: Infection with Entyloma ficariae and telia of U. ficariae - close-upImage 2: Infection with Entyloma ficariae and telia of U. ficariae - close-up (2)Image 3: Infection with Entyloma ficariae and telia of U. ficariae - close-up (3)Image 4: Aecia - close-up - enlargedImage 5: Aecia - highly enlargedImage 6: Aecia - highly enlarged (2)Image 7: Aecia - highly enlarged (3)Image 8: Aecia - highly enlarged (4)Image 9: Aecia - highly enlarged (5)Image 10: Aecia - highly enlarged (6)Image 11: Aecia - magnifiedImage 12: Aecia - magnified (2)Image 13: Aecia - magnified (3)Image 14: Aecia - magnified (4)Image 15: Infection with telia of U. ficariae - close-up - enlargedImage 16: Infection with telia of U. ficariae - close-up - highly enlargedImage 17: Pycnia and Entyloma ficariae - highly enlargedImage 18: Pycnia and Entyloma ficariae - highly enlarged (2)Image 19: Pycnia and young aecia - close-up - enlargedImage 20: Pycnia - magnifiedImage 21: Pycnia - magnified (2)Image 22: Aecia - microscope low magnificationImage 23: Aeciospores and peridial cell - magnifiedImage 24: Aeciospores and peridial cell - magnified (2)Image 25: Aeciospores and peridial cell - magnified (3)Image 26: Aeciospores and peridial cells - magnifiedImage 27: Aeciospores - highly magnifiedImage 28: Aeciospores - highly magnified (2)Image 29: Aeciospores - highly magnified (3)Image 30: Aeciospores - highly magnified (4)Image 31: Aeciospores - highly magnified (5)Image 32: Peridial cells - highly magnifiedImage 33: Peridial cells - highly magnified (2)Image 34: Peridial cells - highly magnified (3)Image 35: Peridium - external surface - magnifiedImage 36: Peridium - internal surface - magnified
3: Uromyces dactylidis (Celandine Clustercup Rust) IDENTIFICATION UNCERTAIN
25 May 2009 OSGR: SU49 51° 40’ N, 1° 20’ W Vice County: Berks (VC 22) England
Aecial and pycnial galls on leaves of Creeping Buttercup
Image 1: Galled leaf - top surface - close-up - black backgroundImage 2: Galled leaf - top surface - close-up - black background (2)Image 3: Galled leaf - top surface - close-up - black background (3)Image 4: Galled leaf - under surface - close-up - black backgroundImage 5: Galled leaf - under surface - close-up - black background (2)Image 6: Galled leaf - under surface - close-up - black background (3)Image 7: Aecia - leaf under surface - magnifiedImage 8: Aecia - leaf under surface - magnified (2)Image 9: Aecia - leaf under surface - magnified (3)Image 10: Aecial gall - leaf top surface showing central pycnia - magnifiedImage 11: Aecial gall on midrib - leaf under surface - close-up - enlargedImage 12: Aecial galls - leaf top surface - close-up - enlargedImage 13: Aecial galls - leaf top surface - close-up - enlarged (2)Image 14: Aecial galls - leaf under surface - close-up - enlargedImage 15: Aecial galls - leaf under surface - close-up - enlarged (2)Image 16: Aecial galls - leaf under surface - close-up - enlarged (3)Image 17: Pycnia - leaf top surface - magnifiedImage 18: Pycnial gall - first aecia bursting - leaf under surface - magnifiedImage 19: Pycnial gall - leaf under surface - magnifiedImage 20: Pycnial galls - leaf top surface - close-up - enlargedImage 21: Pycnial galls - leaf top surface - close-up - enlarged (2)Image 22: Pycnial galls - leaf under surface - close-up - enlargedImage 23: Pycnial galls - leaf under surface - close-up - enlarged (2)Image 24: Aeciospores - magnifiedImage 25: Aeciospores - magnified (2)Image 26: Peridial cells - magnifiedImage 27: Peridial cells - magnified (2)Image 28: Peridial cells - magnified (3)Image 29: Peridial fragments - magnifiedImage 30: Pycnium - squash - magnifiedImage 31: Pycnium - squash - highly magnified
4: Uromyces dactylidis (Celandine Clustercup Rust)
25 May 1997 OSGR: SU57 51° 30’ N, 1° 10’ W Vice County: Berks (VC 22) England
on Meadow Buttercup
Image 1: Cluster cups on underside of leavesImage 2: Upperside of leaf opposite the infectionImage 3: Underside of leaf with cluster cups
5: Uromyces dactylidis (Celandine Clustercup Rust)
7 May 1976 OSGR: SD67 54° 10’ N, 2° 30’ W Vice County: Mid-west Yorks (VC 64) England
on Lesser Celandine
Image 1: Aecia - magnifiedImage 2: Aecia - magnified (2)

Identification Works

AuthorYearTitleSource
Zweto, P. & Blanz, P. 2012 Aeciospore types in rusts on Ranunculus and allied genera Stapfia Vol 96: 105-121.

Uromyces dactylidis (Celandine Clustercup Rust) may also be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Uromyces dactylidis (Celandine Clustercup Rust)
BioInfoBioInfo (www.bioinfo.org.uk) has 30 host/parasite/foodplant and/or other relationships for Uromyces dactylidis (Celandine Clustercup Rust)

A common rust with pycnia and aecia in early Spring on various species of Ranunculus, the uredia and telia on grasses (Dactylis, Festuca, Poa).

Aecia and pycnia on Lesser Celandine (Ranunculus ficaria) can be distinguished from those of U. rumicis by the lack of refractive granules in the aeciospores.

Aecia and pycnia on Ranuculus acris are indistinguishable from those of Puccinia recondita f.sp. perplexans.

Aecia and pycnia on Ranunculus bulbosus and R. repens are indistinguishable from those of Puccinia magnusiana, although the latter doesn’t usually occur before midsummer.

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