Cystotheca quercina

Cystotheca quercina
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Leotiomycetes
Order:	Erysiphales
Family:	Erysiphaceae
Genus:	Cystotheca
Species:	C. quercina
Binomial name
Cystotheca quercina N. Ahmad, A.K. Sarbhoy, Kamal & D.K. Agarwal, 2006

Cystothecaquercina is a species of powdery mildew in the family Erysiphaceae. It is found in Asia on plants in the genus Quercus .

Description

Many Cystotheca species form dense, white or brown, distorting patches on the leaves of their hosts. Some species in this genus are also known to cause witch's-broom galls on their hosts. Cystothecananyuensis, like most Erysiphaceae, is highly host-specific and is only known to infect Quercus leucotrichophora . It has been recorded from India and Pakistan. ^{[1] [2]} This species is similar to Cystotheca wrightii but differs in that it forms white, thin primary mycelium, has larger ascomata, up to 95 μm diameter, and 4–5(–8)-spored asci. ^[3]

Taxonomy

The fungus was formally described in 2006 by N. Ahmad, A.K. Sarbhoy, Kamal and D.K. Agarwal. The type specimen was collected in India. The specific epithet derives from the host genus.

References

1. Afshan, Najam-ul-Sehar; Zafar, Irsa; Jabeen, Muhammada; Liaqat, Nida; Khalid, Abdul Nasir (2022-08-15). "New records of powdery mildews on oak trees in Pakistan". Nova Hedwigia. 115 (1–2): 79–88. doi:10.1127/nova_hedwigia/2022/0696. ISSN   0029-5035.
2. Braun, Uwe; Cook, Roger T. A. (2012). Taxonomic manual of the Erysiphales (powdery mildews). CBS biodiversity series. Utrecht: CBS-KNAW fungal biodiversity centre. ISBN   978-90-70351-89-2.
3. Bradshaw, Michael; Braun, Uwe; Quijada, Luis; Coombes, Allen J.; Contreras-Paredes, Carlos; Pfister, Donald H. (2023-05-04). "Phylogeny and taxonomy of the genera of Erysiphaceae, part 3: Cystotheca". Mycologia. 115 (3): 427–436. doi:10.1080/00275514.2023.2194172. ISSN   0027-5514.