Online floras provide research botanists with the opportunity to work on floristic treatments dynamically, and enable users to browse and search these treatments. A web‐based program called eFloras (URL: http://www.efloras.org/) was developed to enable access to online "electronic" floras. Through a web interface to the data, users can browse online floristic treatments by volume, family, and genus, and can search by name, distributional data, and text. With the use of web forms, editors and authors with permissions can correct and update the data.

The influence of N pulses in the form of experimental additions of HNO3 at two times ambient and (NH4)2SO4 at two and four times ambient on the herbaceous and woody understory plants in three Adirondack Mountain hardwood forests was evaluated. Addition of (NH4)2SO4 decreased cover of dominant herbs and woody seedlings at Woods Lake, a site in the western Adirondacks. Tissue N concentrations of combined herbs and ferns at Woods Lake increased with addition of roman NH sub 4 sup + at both levels (9% at two times ambient; 13% at four times ambient) and increased with all three N treatments at Huntington Forest, a central Adirondack site (14% with roman NO sub 3 sup - and roman NH sub 4 sup + at two times ambient; 22% with roman NH sub 4 sup + at four times ambient). Seedlings of American beech (Fagus grandifolia Ehrh.) increased foliar N concentration 7-8% with addition of roman NH sub 4 sup + treatments at Huntington Forest, but did not respond to N addition at Woods Lake and Pancake Hall Creek, a western Adirondack site. In general, greatest plant nutrient response to N addition occurred at Huntington Forest, where atmospheric inputs of N are lower than at Woods Lake and Pancake Hall Creek.

The capacity for acclimation, "the gradual and reversible adjustment of physiology or morphology as a result of changing environmental conditions" (Lincoln, ct al., 1982), varies among plant species (Chapin, 1980;Hicks & Chabot, 1985). Fast-growing species

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