Willow Salix spp

Palo, R. T. (1984). Distribution of birch Betula spp.), willow [Salix spp.) and poplar Popu-lus spp.) secondaiy metabolites and their potential role as chemical defense against herbivores. Journal of ChemicalEcobgy 10,499-520. 

When beavers first colonize a site they begin by harvesting the most palatable species, such as aspen (Populus spp.) or willow (Salix spp.). Over time, they change the vegetation by their selection of trees for food and construction of dams and lodges. Eventually, often only the least preferred conifers are left, and the beavers move to a new area until some of the depleted vegetation has regenerated. Beavers move back in, and the cycle repeats. 

C20H24O10, Mr 424.40, mp. 135-137°C, occurs in the bark of willows (Salix spp.) and poplars (Populus spp.). It protects the plants from attack by insects (antifee-dant) S. is an inhibitor of the )8-glucosidase from sweet almonds and kills larvae of the swallowtail Papilio glaucus. ... 

Figure 1 shown below is the proton NMR spectrum of an acid hydrolyzed sample of a fast-growing species of willow (Salix spp.). Although the spectral region from 3.2-4.0 ppm is veiy complex, the well resolved resonances centered near 5.2 ppm and 4.6 ppm can be assigned to the a and p anomeric Cl protons of D-glucose and D-xylose. The higher intensity resonance of each pair is D-... 

Upton, R. 1999. Willow bark, Salix spp. Analytical, quality control, and therapeutic monograph. Santa Cruz, CA American Herbal Pharmacopxreia. 

Salicin—found in willow bark (Salix spp.), poplar bark (Populus spp.) and Viburnum spp. 

Peacock L, Herrick S, Brain P (1999) Spatio-temporal dynamics of willow beetle (Phratora vulgatissimd) in short-rotation coppice willows grown as monocultures or a genetically diverse mixture. Agric Forest Entomol 1 287-296 Peacock L, Lewis M, Powers S (2001) Volatile compounds from Salix spp. Varieties differing in susceptibility to three willow beetle species J Chem Ecol 27 1943-1951 Pena-Cortes H, Sanchez-Serrrano JJ, Mertens R, WiUmitzer L (1989) Abscisic acid is involved in... 

Widespread Gossypium spp. (Malvaceae), Agrimonia eupatoria, Crategus laevigata (Rosaceae), Salix caprea (willow) (Salicaceae) [flower]... 

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