Lecture Two

Vegetative plant structure continued

Stems

Nodes
Internodes
Lenticels
Buds
Axillary
Terminal
Pseudoterminal

Leaves

Leaf parts
    Petiole
    Blade
    Stipules
Leaf type
    Simple
    Compound
    Pinnately compound
    Once pinnately compound
    Twice pinnately compound
    Even pinnate; odd pinnate

Leaf arrangement
    Alternate
    Opposite
    Whorled

Some basic leaf blade shapes:    Linear; lanceolate; ovate; elliptic; peltate;

Common leaf margins:  Entire, Serrate, Dentate, Lobed

Examples of common leaf apices:  Acute; obtuse; acuminate; mucronate

Examples of leaf bases:  Trunctate; sagittate; cordate; oblique; auriculata; perfoliate
 

Reproductive structures:

Flowers

4 basic parts of flowers:

    Sepals -> calyx

    Petals ->corolla

    Stamens -> androecium

    Carpels -> gynoecium (pistil).   Consists of the stigma; style; and ovary

            Ovules are contained in the ovary and, when mature, form the seed
            Ovary wall will mature into the fruit; other floral parts may also participate in fruit formation in certain species.

        Pistil:  Simple
                  Compound

Complete flowers
Perfect flowers
Flower symmetry
    Radial
    Bilateral

Androperianth position
    Hypogynous
    Epigynous
    Perigynous

Ovary postion
    Inferior
    Superior

References:

Godfrey, R. K. and J. W. Wooten. 1979. Aquatic and Wetland Plants of Southeastern United States, Monocotyledons. University of Georgia Press, Athens. [ISBN: 0-8203-0420-4; LC card number QK125.G6, 584’.0976, 76-28924]. Glossary: pp. 685-692.

Godfrey, R. K. and J. W. Wooten. 1981. Aquatic and Wetland Plants of Southeastern United States, Dicotyledons; University of Georgia Press, Athens. [ISBN: 0-8203-0532-4; LC card number QK125.G59, 583’.0976, 80-16452]. Glossary: pp. 887-896.

Harris, J. G. and M. W. Harris. 1994. Plant Identification Terminology, An Illustrated Glossary. Spring Lake Publishing. Spring Lake, Utah. [ISBN: 0-9640221-5-X; LC card number QK9.H37 1994, 580.3 H242, 94-065026].