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Abstract Detail


MSA - Systematics/Evolution

Pereira-Carvalho, Rita de Cassia [1], Inacio, Carlos A [1], Dianese, Jose C [1].

New Polycyclinopsis (Ascomycota) species from the Brazilian Cerrado.

An ascomycete found in Brasília on leaves of Psidium aerugineum (Myrtaceae) was shown to belong in a new Polycyclinopsis species characterized by: lesions 2-4-6 mm, foliar, amphigenous, crustose, circular, coalescent, mainly along the midrib, limited by dark purplish line; mycelium superficial, inconspicuous; hyphae 7-9-13 × 2-2-3 µm, hyaline to light brown, septate, without hyphopodia; ascomata amphigenous, superficial, orbiculate, multiloculate, multiloculate, 67-135 µm to 198-248-466 µm × 67-100-123 µm, ostiolate, textura radiata; hypostromata present; asci 34-43-58 (43) × 13-17-21 µm, cylindrical, clavate, bitunicate, 8-spored; hamathecial filaments 1-2-2 µm diam., hyaline, septate, filiform, with remnants among asci; ascospores 14-15-19 × 6-8-9 µm, clavate, hyaline, 1-septate, constricted at septum, apical cell 7-8-11 × 5-6-8 µm, basal cell 6-7-9 × 3-5-6 µm. The fungus is the second species of the monotypical Polycyclinopsis that will soon be published following the rules of the International Code of Botanical Nomenclature.


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1 - Universidade de Brasilia, Fitopatologia, Campus Universitario Darcy Ribeiro, Asa Norte, Brasilia, Distrito Federal, 70910-900, Brazil

Keywords:
Fungi
neotropical
Brazil.

Presentation Type: Poster:Posters for Topics
Session: P2
Location: Event Tent/Cliff Lodge
Date: Tuesday, July 28th, 2009
Time: 5:30 PM
Number: P2SE004
Abstract ID:81


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