1. What you need to know to identify plants
Leaf Characteristics
What you need to know to identify plants

2. Leaf & Sten Arrangement
Basal
Opposite
Alternate
Whorled
Fascicled
basal
Alternate
Opposite
Whorled

3. Leaf & Stem Arrangement
Basal
Opposite
Alternate
Whorled
Fascicled
Basal Arrangement:
Agoseris glauca
Fascicled:
Pinus edulis

4. Range Plants -- OBJ 1: PPT
Leaf Arrangements
Alternate
Opposite
Whorled
There are 14 slides in this presentation

5. Leaf Arrangement
Opposite
Alternate
Whorled

6. Leaf Attachment
Sessile
Petiolate
Clasping
Sheathing

7. Petiolate
Sheathing
Clasping
Sessile

8. Leaf Type: Simple or Compound

9. Range Plants -- OBJ 1: PPT
Leaf Types
Simple
Compound
Compound - Palmate
Compound - Pinnate
There are 14 slides in this presentation

10. Compound Leaves
Palmate
Pinnate

11. Simple Leaves

12. Range Plants -- OBJ 1: PPT
Leaf Shapes
Linear
Elliptic
Lanceolate
Oblanceolate
Ovate
Obovate
Palmate
Wedge-shaped
Arrow-shaped
There are 14 slides in this presentation

13. Leaf Shapes Elliptic Lanceolate Oblanceolate Linear Obovate Ovate
Arctostaphylos pungens
Lanceolate
Senecio serra
Oblanceolate
Hymenoxys hoopesii
Linear
Salix exigua
Obovate
Arctostaphylos
Uva-ursi
Ovate
Populus tremuloides
Palmate
Acer glabrum
Wedge-shaped
Artemisia tridentata
Arrow-shaped
Balsamorhiza sagittata

14. Leaf Shapes Fig. 11

15. Range Plants -- OBJ 1: PPT
Leaf Veinations
Parallel
Pinnate
Palmate
Netted
There are 14 slides in this presentation

16. Palmate Venation
Pinnate Venation
Parallel Venation
Netted Venation

17. Range Plants -- OBJ 1: PPT
Leaf Margins
Lobed-pinnate
Lobed-palmate
Entire
Serrated
Scalloped
Toothed
There are 14 slides in this presentation

18. Range Plants -- OBJ 1: PPT
Leaf Margins
Lobed-pinnate
Quercus gambelii
Lobed-palmate
Rubus parviflorus
Entire
Symphoricarpos albus
Scalloped
Symphoricarpos occidentalis
Toothed
Amelanchier alnifolia
Serrated
Prunus virginiana
There are 14 slides in this presentation

19. More Leaf Margins
If a leaf margin is very ragged and like it has been cut and sliced… then the margin would be called insized or divided. It could be palmately divided, pinnately diviced or highly divided:

20. More Leaf Margins
If a leaf margin is very ragged and like it has been cut and sliced… then the margin would be called incised or divided.
It could be palmately divided, pinnately divided or simply “highly divided”

21. Leaf Margins Fig. 13 in Brown Book

22. Plant Anatomy & Plant Parts
What you need to know to identify plants
Searching for plants.