Journal Article Research Support, Non-U.S. Gov't Letter clonal growth organs disturbance phylogeny temperate climate Central European flora Soil Trichoderma Trifolium adventitious meristem ancestral states annuals axillary meristem bud bank traits bud preformation bud protection bud-bearing roots bud‐bearing organ type and depth clonal plant clonal traits environmental gradients flowering phenology fungi genome size herbaceous perennial herbaceous species lateral spread main root