Plant Diversity 4

Types of Leaves

Simple, Compound, Doubly Compound

Simple Leaf

Petiole (between leaf blade and stem, like a charger cord), Blade (the leaf itself), and the Axillary bud (shares a node with the petiole, like an embryonic shoot)

Compound Leaf

Leaflet (last leaf at the end), Axillary bud.
Sub Categories:
Palmately Compound
Pinnately Compound
Bipinnate

Leaf Venation

Pinnate, Reticulate, Palmate, 3 Main Veins, Parallel

Pinnate

Pin, w/ leaf veins

Reticulate

fancier version of pinnate. the veins have veins

Palmate

Like a Palm of a hand

3 main veins

nuff said

Parallel

Veins in leaf are all in a parallel pattern

Leaf Arrangements

Alternate, Spiral, Parallel, Whorled (3+)

Modified Leaves (special)

Scales, Tendrils (think grapevine), Bracts (flower like leaf), Needles (pine), Succulent Leaves, Spines (cactus)

Meristem

At the tips of roots and shoots (shoot apical “apex” meristem [on top],

Then there’s lateral meristem, the veins inside.

California Plant Community 1

Chaparral

California Plant Community 2

Coastal Sage Scrub

California Plant Community 3

Riparian

California Plant Community 4

Oak Woodland

California Plant Community 5

Coastal Grassland