sentences:  "Aglaophyton", a rootless vascular plant known from Devonian fossils in the Rhynie chert was the first land plant discovered to have had a symbiotic relationship with fungi  which formed arbuscular mycorrhizas, literally "tree-like fungal roots", in a well-defined cylinder of cells (ring in cross section) in the cortex of its stems.The fungi fed on the plant's sugars, in exchange for nutrients generated or extracted from the soil (especially phosphate), to which the plant would otherwise have had no access.Like other rootless land plants of the Silurian and early Devonian "Aglaophyton" may have relied on arbuscular mycorrhizal fungi for acquisition of water and nutrients from the soil.