Durability postproduction of three species of kalanchoe (crassulaceae) in vessels with different substrates... After 30 days, it was evaluated the general aspects as changes in color, leaf abscission and shading of the stem apex....
Common name: mogollon thistle synonyms:... Heads are solitary or few, borne at the stem apex....
Cadmium interferes with auxin physiology and lignification in poplar... Growth, photosynthetic performance, lignification, peroxidase activity, auxin concentration, and GUS staining were determined in order to record the activities of GH3 enzymes in the stem apex, the elongation zone, wood in the zone of radial growth, and in roots....
Paepalanthus serpens, a new microendemic species of eriocaulaceae from the espinhaço range, minas gerais, brazil... Paepalanthus, and is easily distinguished from its congeneric species by its elongated, lignescent stem, thickened by the marcescent sheaths of the linear leaves, which are arranged in a rosette at the stem apex, scapes equalling the leaf height, and capitulae with straw-coloured involucral bracts....
