PLANTS INTRUDING LARETIA-ACAULIS (UMBELLIFERAE), A HIGH ANDEAN CUSHION PLANT
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Date
1985
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Abstract
Several plants invade the cushions of L. acaulis in the high Andean communities of central Chile. Humus develop among the rosettes, and 42 different spp. settle on the cushions. Most of these species are also found outside the cushions. Semi-woody chamaephytes, hemicryptophytes and cryptophytes have a similar cover on both substrates, while the cover of woody chamaephytes and therophytes is smaller on the cushions. The diversity and cover of invading plants, which vary with altitude, result from interations among the environmental conditions, cushion morphology and the surrounding vegetation.