TY - GEN AU - Fisher,D G AU - Evert,R F TI - Studies on the leaf of Amaranthus retroflexus (Amaranthaceae): ultrastructure, plasmodesmatal frequency, and solute concentration in relation to phloem loading SN - 0032-0935 PY - 2013///1126 N1 - Publication Type: Journal Article UR - https://doi.org/10.1007/BF00394465 ER -