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Remarkable pollination stories keep emerging (see lemur pollination of Ravenala reported in Primatologia and dung-beetle pollination of Lowiaceae reported in an earlier issue of AJB). Working in the wet forest tropics of high species diversity (more than 1200 spp. of trees in 50 ha), Yumoto has made noteworthy observations of the pollination biology of three durian (Durio) species in Sarawak, Malaysia. Consider that durians are extremely sparsely distributed, not easily climbed, and offer many other logistical difficulties with respect to study when looking at his marvelous photograph of a spiderhunter on a durian floral tube. (see p. 1181)

Understanding differential mating success

Travers and Holtsford demonstrate that pollen donor genotype at the Pgi locus can influence pollen performance (ability to sire seeds in competition with pollen bearing an alternative Pgi genotype) and the probability of seed maturation following fertilization. Their thoughtful experimental design employs a series of hand-pollinations using donors and recipients that are homozygous for Pgi, controlled pollen load sizes, and a detailed accounting of the fates of ovules to feret out differences in pollen performance and seed maturation among genotypes. (see p. 1091)

Exploring the geometry of ribbed succulent stems

Mauseth focuses on the Cactaceae in his discussion of surface-to-volume ratios in ribbed shoots and how physiological parameters such as water storage, photosynthesis, and transpiration are affected by number and height of ribs. This mostly theoretical research is developed thoroughly and comes up with convincing conclusions. (see p. 1107)

Stomatal patterning

Judith Croxdale makes an important contribution to the study of stomatal patterning and the study of pattern in general. The literature review is exciting, bringing out aspects of stomatal pattern not usually mentioned (fossils, organs other than leaves, links to physiology). She analyzes existing work to present new theories and connections. Further, she shows how the study of symplasmic domains and the cell cycle to stomatal patterning should advance understanding of stomatal patterning mechanisms. (see p. 1069)

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