Calvatia sporocristata sp. nov. (Gasteromycetes) from Costa Rica

Calvatia sporocristata, Gasteromycetes, is described and illustrated as a new species. Its taxonomic characters are discussed and compared with other closely related species of the genus. Few studies have been carried out on tropical Gasteromycetes. The new species here proposed has, as the main features: exoperidium corky, smooth, one-layered, pseudoparenchymatous; endoperidium thin, papyraceous, dextrinoid; subgleba cellular; capillitium septate, dissociated at the septal site, lycoperdon type, without pores, elastic and spores amigdaloid, 4-6 (-7) x 2.5-4.5 microns with spines aligned, forming crests, 0.8 micron high.

Patogenecidad de Phylloporia chrysita (Aphyllophorales: Hymenochaetaceae) sobre Erythrochiton gymnanthus (Rutaceae) / Pathogenicity on Phylloporia chrysita (Aphyllophorales: Hymemenochaetaceae) on Erythochiton gymnanthus (Rutaceae)

The pathogenicity of Phylloporia chrysita (Berk.) Ryv. on Erythrochiton gymnanthus K. (Rutaceae) was studied in Carara Biological Reserve, seasonal Pacific of Costa Rica. Growth rate and distribution of basidiocarps were determined on health and diseased plants. P. chrysita caused 52 percent growth reduction on diseased plants. Fungal hyphae were observed on epidermis, parenchyma and vascular tissue, where they caused cellular breakdown