M. juncea

M. juncea may refer to:


 * Machaeranthera juncea, an aster native to northern Mexico
 * Machaerina juncea, a rhizomatous plant
 * Macrotyphula juncea, a gilled mushroom
 * Maerua juncea, a dicotyledonous plant
 * Menodora juncea, a perennial plant
 * Mollugo juncea, an annual plant