The Jepson Manual: Higher Plants of California

    THIS PAGE IS NO LONGER UPDATED
    AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

Names are linked to treatments from the Manual


Key to MYRIOPHYLLUM

N.B.: couplets are linked, e.g., 1. is linked to 1'.

  1. Leaves subtending flowers pinnately dissected, like cauline leaves; spike 0; dioecious
M. aquaticum
  1' Leaves subtending flowers generally simple, entire to lobed, < cauline leaves, leaf- or bract-like; spike emergent; monoecious
 
    2. Emergent inflorescence-leaves generally 4–15 mm, > 2 × flower, entire to lobed
 
      3. Emergent leaves generally ± entire to serrate
M. hippuroides
      3' Emergent leaves generally pinnately lobed to divided
M. verticillatum
    2' Emergent inflorescence-leaves < 3 mm, < flower, bract-like, margin entire to finely toothed
 
      4. Submersed leaves with < 26 divisions; divisions thread-like, generally not paired
M. sibiricum
      4' Submersed leaves with > 28 divisions; divisions linear, paired
M. spicatum


University & Jepson Herbaria Home Page |

Copyright by the Regents of the University of California