Plant Biology

Leaf Shapes

Simple Vs. Compound

Basic Shape:

Sword-

Lance-

Ovate-

Elliptic-

Round-

Cordate-

Leaf Edges:

Entire-

Lobed-

Toothed-

Serrated-

Leaf Arrangement:

Simple-

Opposite-

Alternate-

Whorled-

Pinnate-

Palmate-

Trifoliate

Rosette-

Perfoliate-

Tree Examples

Virtual Tree ID Key

New Paltz High School Plant List

The following factors have a major impact on the species composition of the forest at New Paltz High School.

-Drought- kills off chestnut oaks and maples

-Gypsy Moth- eats leaves of many trees

-Elongate Scale- combined with wooly adelgid are killing off hemlocks. Attacks needles and weakens tree

-Wooly Adelgid- combined with elongate scale are killing off hemlocks

-Chestnut blight fungus- attacks bark of chestnut

-White tailed deer- eats many saplings and native wildflowers to the point of threatening their extripation from the region.

-MANKIND- vastly alters species composition. Lawn or clearing to form secondary growth

Out of your Tree Play

Succession
Activity: Time Lapse