Economic Stem Products and External Leaf Morphology

Fossilized tree resin sometimes enclosing insects

Amber

Broad photosynthetic blade of a leaf

Lamina

Stalk connecting the leaf blade to the stem

Petiole

Main axis of a compound leaf bearing its leaflets

Rachis

Small stalk attaching an individual leaflet to the rachis

Petiolule

Leaf blade divided into distinct leaflets

Compound leaf

Leaf feature at its base that helps distinguish a whole leaf from leaflets

Axillary bud

Leaf vein pattern forming a branching network, common in dicots

Reticulate venation

Leaf vein pattern in which major veins run approximately parallel

Parallel venation

Pore through which leaf gas exchange and water loss occur

Stoma

Woody monocot grass used for furniture, flooring, and as a timber substitute

Bamboo