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In the Cyperaceae three of the pollen microspores degenerate to yield one functional pollen grain (pseudomonad). Brown and Lemmon use advanced imaging techniques to document this unique developmental system in Carex blanda, highlighting many features of interest to plant scientists—pollen development, cell cycle control, the cytoplast concept, and polarity determination. (see p. 1)

A test of pseudoflowers

Pfunder and Roy test the interactions among true flowers of Euphorbia, pseudoflowers produced by a rust fungus pathogen on Euphorbia, and their pollinators under field conditions. They show that fungal-produced pseudoflowers on Uromyces-infected Euphorbia are visited by insects that are important in transferring fungal gametes for successful fertilization of other mating types and that insects can differentiate pseudoflowers and true flowers. (see p. 48)

The fungal meristem in Cladoniaceae

Hammer describes the growth dynamics of the mycobiont meristem tissue in a range of genera in the Cladoniaceae. Supported by beautifully presented scanning electron micrographs, the discussion illustrates several branching patterns and the potential for using meristem growth dynamics as a tool for phylogenetic studies. (see p. 33)

Terpene emissions

Terpene fluxes into the atmosphere from plants are governed by the vapor pressure of the compounds and the diffusive resistance of the leaves. Llusià and Peñuelas compare seasonal biological controls over these processes in woody Mediterranean taxa that emit large amounts of terpenes. Some of the taxa they study store terpenes as well, while others are nonstorers. They highlight the relevance of their results to plant ecology and to ozone photochemistry and aerosol formation. (see p. 133)

This Article Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Search for Related Content