Ravenelia cenostigmatis, a new rust fungus from Brazil
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Ravenelia cenostigmatis is described as a new species of plant rust (Uredinales) onCenostigma gardnerianum (Caesalpiniaceae) from Brazilian Cerrado. Teliospore heads ofR. cenostigmatis exhibit an unusually complex structure with four different kinds of cells: teliospore cells, sterile apical cells (intercalary between pedicel hyphae and teliospores), sterile hygroscopic cysts, and morphologically distinct border cells. The last are flattened, elaborately ornamented and probably sterile cells that are wedged between the teliospores and the cysts.Ravenelia cenostigmatis probably belongs to a natural assemblage of ravenelias that occur on caesalpiniaceous hosts and exhibit similar morphological traits.
Key WordsCaesalpiniaceae Kernkampella systematics teliospore morphology
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- Baxter, J. 1966. New species of rust fungi from Mexico. Mycologia58: 336–338.Google Scholar
- Hennen, J. F. and Cummins, G. B. 1990. New species and nomenclature ofRavenelia in Neotropica. Rep. Tottori Mycol. Inst.28: 1–14.Google Scholar
- Tyagi, R. N. S. and Prasad, N. 1972. The monographic studies on genusRavenelia occurring in Rajasthan. Indian J. Mycol. Plant Pathol.2: 108–135.Google Scholar
- Viégas, A. P. 1945. Alguns fungos do Brasil. IV. Uredinales. Bragantia5: 1–144.Google Scholar