Botany 208 Name___________________________________
Quiz #4
27 February 2007
Using the following descriptions, key out each of the plants using a different answer sheet for each one. On each space of the answer sheet, put the page number of the key that you are using and enough of the description so that I know which choice you made. You will be graded on your 2 best plants. Good Luck!
Plant #1
FLORAL CHARACTERISTICS:
1. Plant has flowers.
2. Flowers are 2 – 4 mm (0.2 – 0.4 cm) wide.
3. Flowers are terminal and not arranged in an inflorescence.
4. Flowers do not have scales or bracts beneath them.
5. Flowers have 3 petals, 3 sepals, 3 fused carpels and 6 stamens.
6. All flower parts attach below the ovary.
7. The sepals are green and the petals are yellowish.
OTHER CHARACTERISTICS:
1. Leaves are in two whorls on the stem.
2. Plant lives on the land, and not on another plant.
3. Plant is an herb.
4. Leaves are 3 – 16 cm long and 1 – 5 cm wide.
5. Leaves have parallel venation.
Plant #2
FLORAL CHARACTERISTICS:
1. Flower has yellow petals.
2. Stamens of flower are 15 – 20 mm long.
3. Flowers are arranged in a terminal panicle.
4. Flower has 5 united sepals (5-lobed), and 4 separate petals.
5. Flower has 6 or 7 stamens.
6. Corolla is zygomorphic.
7. Many flowers are imperfect.
8. Ovary is superior when it is present.
9. Perfect flowers have a perianth that is differentiated into sepals and petals.
OTHER CHARACTERISTICS:
1. Plant is a large deciduous tree with green leaves.
2. Leaves are opposite and palmately compound.
3. Leaves are present at time of flowering.
4. Each leaf usually possesses 5 leaflets.
5. Fruit is a hard woody spherical capsule.
6. Seeds are not hairy.
7. Plant is not parasitic.
8. Leaves are net-veined.
Plant #3
FLORAL CHARACTERISTICS:
1. Corolla is present, but the calyx is absent.
2. Flowers and fruits are in an involucrate head.
3. Flowers are present.
4. Inflorescence is a solitary head found at the end of (terminating) the stem.
5. Involucre on the head consists of 2 or more series of bracts.
6. No reproductive bodies are found on leaf surfaces.
7. Only ray flowers are present on the head.
8. Ovary is inferior.
9. Stamens are united by their anthers.
OTHER CHARACTERISTICS:
1. Embryo has 2 cotyledons.
2. Fruit is dry with indehiscent carpels.
3. Fruits are not a circle of separating carpels, and are not schizocarps.
4. Fruits are 1-seeded nutlets which are olive-green or greenish brown in color.
5. Leaves are green and simple.
6. Leaves are net-veined.
7. Leaves are not peltate.
8. Plant is scapose (acaulescent), with only basal leaves.
9. Plant is a terrestrial herb.
10. Plant is not a climbing vine.
11. Stems are usually not branched (if they are branching, they do so only at the base of the plant).
12. Stem leaves are absent (not opposite, alternate or whorled).