Puccinia sessilis is a fungal species and plant pathogen , which is also known as arum rust or ramsons rust .[3] It commonly infects Arum maculatum and Allium ursinum causing yellow to orange circular patches on leaves. On the underside of the leaves, it produces raised orange aecia commonly covered in spores . It is common in Eurasia in the spring.
Quick Facts Puccinia sessilis, Scientific classification ...
Puccinia sessilis
Puccinia sessilis aecia on leaf of Arum maculatum
Scientific classification
Domain:
Eukaryota
Kingdom:
Fungi
Division:
Basidiomycota
Class:
Pucciniomycetes
Order:
Pucciniales
Family:
Pucciniaceae
Genus:
Puccinia
Species:
P. sessilis
Binomial name
Puccinia sessilis
Synonyms [2]
Aecidium allii Grev., Fl. Edin.: 447 (1824)
Aecidium ari Desm., Catal. des plantes omis.: 26 (1823)
Aecidium ari Berk., in Smith, Engl. Fl., Fungi (Edn 2) (London) 5(2): 369 (1836)
Aecidium convallariae Schumach., Enum. pl. (Kjbenhavn) 2: 224 (1803)
Aecidium convallariae Link, Mag. Gesell. naturf. Freunde, Berlin 8: 29 (1816)
Aecidium convallariae Desm. [as 'convalariae'], Catal. des plantes omis.: 26 (1823)
Aecidium orchidearum Desm., Catal. des plantes omis.: 26 (1823)
Dicaeoma phalaridis (Plowr.) Kuntze, Revis. gen. pl. (Leipzig) 3(3): 470 (1898)
Pleomeris sessilis Syd., Annls mycol. 19(3-4): 171 (1921)
Puccinia allii-phalaridis Kleb., Jb. wiss. Bot. 34: 399 (1899)
Puccinia ari-phalaridis Kleb., Jb. wiss. Bot. 34: 399 (1899)
Puccinia digraphidis Soppitt, J. Bot., Lond. 28: 215 (1890)
Puccinia festucina Syd. & P. Syd., Annls mycol. 10(2): 217 (1912)
Puccinia linearis Roberge, Ann. Sci. Nat. 4: 125 (1855)
Puccinia orchidearum-phalaridis Kleb., Z. PflKrankh. PflSchutz 7: 33 (1897)
Puccinia paridis Plowr., J. Linn. Soc., Bot. 30: 43 (1895)
Puccinia paridis-digraphidis Plowr. ex Kleb., Z. PflKrankh. 6: 261 (1896)
Puccinia phalaridis Plowr., J. Linn. Soc., Bot. 24: 88 (1888)
Puccinia sessilis W.G. Schneid., Hedwigia 10(1): 10 (1871)
Puccinia winteriana Magnus, Hedwigia 33: 78 (1894)
Trichobasis ari (Desm.) Lév., in Orbigny, Dict. Univ. Hist. Nat. 12: 785 (1849)
Close
Close up of aecidia of Puccinia sessilis
It was originally found on the leaves of Iris versicolor in New York, USA.[2]
Other plant species affected by this rust include Convallaria majalis , Dactylorhiza fuchsii , Dactylorhiza incarnata , Dactylorhiza majalis , Gymnadenia conopsea , Neottia ovata , Paris quadrifolia and Phalaris arundinacea .[4]
A specialised form, Puccinia sessilis f.sp. narcissi-orchidacearum Boerema & Kesteren (now called Aecidium narcissi ) is a cause of rust in daffodils (Narcissus ) and also on various wild Orchidaceae species.[5]