Jepson Flora Project: Jepson Interchange    
 

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    THIS PAGE IS NO LONGER UPDATED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 POPULUS

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

  1. Leaf blade white-tomentose below
P. alba
  1' Leaf blade glabrous or hairy below
 
    2. Leaf blade lanceolate
P. angustifolia
    2' Leaf blade ovate, nearly round, or triangular
 
      3. Leaf blade triangular, margin coarsely scalloped
P. fremontii subsp. fremontii
      3' Leaf blade ovate to nearly round, margin finely scalloped
 
        4. Leaf blade narrowly to widely ovate, 3–7 cm; petiole 1/3–1/2 blade length, round in X-section
P. balsamifera subsp. trichocarpa
        4' Leaf blade widely ovate to nearly round, generally 2–4 cm, petiole 2/3 to = blade length, laterally compressed in X-section
P. tremuloides


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