Workshop Part 1: Names  Workshop Part 3: Keys   Workshop Part 4: Keys   
Workshop Part 5: Weber Arnica key
   Workshop Part 6: Keys and species

Part 2B: Leaf Venation and Arrangement
TO 2A, LEAF SHAPES
TO 2C, LEAF MARGINS AND SURFACES

Leaf venation

Parallel leaf venation

  Erigeron eatoni

 

Pinnate leaf venation

Rhus glabra

 

Palmate  leaf venation

Populus alba

 


Leaf arrangement

Alternate  

  Collomia linearis

 

Opposite

     Penstemon whippleanus   

 

Whorled

 Galium septentrionale

 

Basal rosette

  Pterogonum alatum

 

 

Leaf attachment

Sessile

Lappula occidentalis 

 

Petiolate

  Populus nigra

 

Perfoliate, auriculate, clasping

  Veratrum tenuipetalum

TO 2A, LEAF SHAPES
TO 2C, LEAF MARGINS AND SURFACES

Workshop Part 1: Names   Workshop Part 3: Keys   Workshop Part 4: Keys   
Workshop Part 5: Weber Arnica key
   Workshop Part 6: Keys and species