Monday, July 19, 2010

LAB 5

FAMILY APIACEAE
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A fennel plant; one of the many members of the Apiaceae family. Can you make out the following structures? Sheathing petiole, umblet, ray.

This clusters of flowers is called an umblet. Notice the actinomorphic floral arrangement.

This photo shows the 5 stamen that are within each flower. The curled up structures adjacent to each stamen
are its petals. A gap separates each petal, making them "free" or "unfused"
The two segments of the stylopodium are within the petals. You may be able to make out the 2 segments.

A longitudinal section through one of the flowers reveal to oval grooves. This indicates it had 2 carpels within its pistil. The next photo shows the cross section view of these 2 spaces.


The next 2 photos are some leaves of this family.
3 leaves seems to form one bigger leaf, are these leaves compound or simple?



FAMILY LAMIACEAE
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The family with members that are usually aromatic.

Can you make out the 5 bilabiate petals? The next photo gives a better view. Also, what kind of symmetry does this family have?

Zygomorphic symmetry

This family has 4 stamens.

And a single pistil.

The sepals of the above flower. How many do you see and are they fused?

Leaves from this family. Most of them have surface hairs that secrete aromatic compounds, what are they called?

Glandular and non-glandular trichomes.


FAMILY FABACEAE
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This flower has the same floral symmetry as the previous family. What is it?

A side view of the same flower.

Can you name all the floral parts in this photo?
Banner (pink), wings (white), keel (greenish), sepals.

How many sepals? One of them is a bit hidden due the angle this photo was taken.

I think this is the most stamen we've seen in a single flower thus far. Fused stamens - the fatter part that stamens are joined to.

That is all for the 3 families!



Bonus family! CHENOPODIACEAE
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Unfortunely, I do not have much information on this family. If anyone wants to label the above photo of a Quinoa and leave it in the comments that would be great.

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