The three plant species we are using for this experiment are the Deodar Cedar (Cedrus deodara), the Poinsettia (Euphorbia pulcherrima), and the Christmas Cactus (Schlumbergera truncata). Of the three, the Cedar is a gymnosperm and the Poinsettia and Christmas Cactus are angiosperms. This means that while the Poinsettia and the Cactus produce flowers to help spread their pollen by attracting pollinators, the Cedar must rely solely on wind to spread its pollen.
The Deodar Cedar is a large evergreen tree native to the western Himalayas. Like other gymnosperms, it uses male and female cones to produce and receive pollen, respectively. The majority of its pollen is produced in the fall.
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The Ponsettia is a small house plant, originally from Mexico and South America. It has bright colored leaves that surround its flowers, which are often mistaken for petals. These leaves are commonly bright red, but can also be orange, pink, white, green, or marbled. It has small flowers in the center of each ring of leaves.
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The Christmas Cactus is a mountain dwelling plant from south-eastern Brazil. It thrives is high humidity and requires only rocks or other plants to grow on top of. It has long, flattened stems which end in small, brightly colored flowers that come in pink, red, orange, yellow, white, and purple.
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