Volkartia (Volkartia rhaetica)
- 'Oihana: Ascomycota (Ascomycetes)
- Māhele: Taphrinomycotina (Taphrinomycotaceae)
- Papa: Taphrinomycetes
- Papa haʻahaʻa: Taphrinomycetidae (Taphrinomycetes)
- Kauoha: Taphrinales (Taphrines)
- ʻOhana: Taphrinaceae (Taphrinaceae)
- ʻAno: Volkartia (Volkartiya)
- Type: Volkartia rhaetica (Volkartia)
Volkartia (lat. Volkartia rhaetica) he haloʻokoʻa. ʻO ia wale nō ka fungus o ka genus Volkartia. He ʻano ʻano kēia o nā haʻiki ascomycete (ʻohana Protomycium). Hoʻopiʻi pinepine kēia haʻuki i nā mea kanu o ka genus Skerda.
Ua ʻike ʻia ka genus Volkartia a ua hoʻohana ʻia e R. Mair i ka makahiki 1909, akā no ka manawa lōʻihi ua like ia me ka genus Taphridium. Akā i ka makahiki 1975, ua hana hou ʻia kēia ʻano (a me ka haʻo) e Reddy lāua ʻo Kramer. Ma hope mai ua ʻae ʻia e hoʻokomo i loko o kēia ʻano ʻano haʻi ʻē aʻe i pili iā Taphridium ma mua.
Manaʻo ʻia ʻo Volkarthia he parasite. Hoʻokumu ka haʻuki i nā kikoʻeleʻele ma nā lau o kahi mea kanu i hoʻopilikia ʻia e Volcarthia. Aia ma nā ʻaoʻao ʻelua o ka lau ka haʻiki ponoʻī. He keʻokeʻo keʻokeʻo ʻo Volkarthia a noho i kahi ʻāpana nui o ka lau o ka mea kanu.
ʻO kekahi mau huaʻōlelo e pili ana i ke ʻano o loko o ka fungus.
Hoʻokumu nā pūnaewele Ascogenous i kahi papa o ka hoʻonohonoho kelepona nui ma lalo o ka epidermis. ʻO ka maʻamau he spherical lākou, ʻo ka nui he 20-30 microns. Ke ulu nei lākou e like me synasci, ʻaʻohe manawa dormant. ʻO ka hiʻohiʻona o nā synascos kahi hiʻohiʻona ʻokoʻa e hiki ai iā mākou ke hoʻokaʻawale iā Volkarthia mai nā fungi o ka genus Tafridium. Hiki ke noʻonoʻo ʻia kahi o nā cell ascogenous ma ke ʻano he ʻokoʻa ma waena o kēia fungus a me nā ʻelele o nā protomyces, kahi i hoʻopuehu ʻia ai nā cell ma lalo o ka epidermis. Hiki ke hoʻohui ʻia i loko o nā protomyces, ke hoʻokumu ʻia o nā synasces ma hope o kahi manawa dormant. Inā mākou e kamaʻilio e pili ana i nā synasces, a laila ma Volcarthia he cylindrical lākou, ʻo ko lākou nui ma kahi o 44-20 µm, ʻo ka mānoanoa o ka pūpū kala ʻole ma kahi o 1,5-2 µm.
ʻAʻole waihoʻoluʻu ka ʻōpuʻu, e like me ka pūpū, 2,5-2 µm ka nui, poepoe a ellipsoidal paha ke ʻano, hiki ke pololei a i ʻole ka ʻeke. Hoʻokumu pinepine ʻia nā Ascospores ma ka pae ascogenous cell. Hoʻoulu ka spores i ka mycelium ma hope o ka pau ʻana o ka wā dormant.
Hoʻopili maʻamau kēia haʻuki iā Crepis blattarioides a i ʻole nā ʻano skerda like ʻole.
Loaʻa ka haʻuki ma Kelemānia, Palani, Switzerland a me Finland, a hiki mai ma Altai.