Sunday, July 19, 2015

21. Seed Dispersal

It looks like a big neko ear!
 Definition: Seed dispersal is the transport of seeds away from the parent plant. Since plants can't move the way animals do, they rely on other ways to spread their seeds.

What the specimen is: This plant is commonly known as "butterfly weed" since it attracts butterflies. The scientific name is asclepias tuberosa.

Where we found it: This was found in a local Japanese nursery. Sarah walked there this morning after yoga class.

How it relates to seed dispersal: When butterfly weed has reached maturity, it has seed pods that split open and reveal the seeds. Butterfly weed is unique because the ends of the seeds have white silky parts that allow their seeds float. This means during windy days the seeds can be dispersed through the air.

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