Definition: The area of soil that is around plant roots and is affected by them.

Example: The health of the rhizosphere is crucial for plant growth and nutrient uptake.

Definition: A type of bush or small tree that has shiny green leaves and large, colorful flowers, often found in gardens and parks.

Example: The rhododendron in our garden blooms beautifully every spring.

Definition: A type of shrub found in northeastern North America, known for its pink or rose-purple flowers that bloom in spring before the leaves grow.

Example: In the spring, the rhodora fills the garden with beautiful pink blossoms.

Definition: A type of plant with long, thick, edible leaf stalks that are often used in cooking, especially in desserts like pies. The stalks are usually green or reddish and have a tart flavor.

Example: She made a delicious rhubarb pie for dessert.

Definition: A specific layer of bark found on trees, which is located outside the most recently formed protective layer.

Example: The rhytidome of the tree was thick and rough, indicating its age.

Definition: A type of shrub that produces small, colorful flowers and berries, including currants and gooseberries.

Example: The garden was filled with ribes, showcasing beautiful flowers and delicious berries.

Definition: A type of weedy plant with long, narrow, ribbed leaves and small whitish flowers, commonly found in Eurasia.

Example: The ribgrass grew abundantly in the field, attracting various insects.

Definition: A type of plant that belongs to the plantain family, often found in grassy areas and known for its long, narrow leaves and small flower spikes.

Example: The ribwort is commonly seen in meadows and along roadsides during the summer months.

Definition: A type of plant that is often associated with clearweed, typically found in wet areas.

Example: The richweed grew abundantly along the riverbank, thriving in the moist soil.

Definition: A type of plant that belongs to the Spurge family, known for its seeds that are used to make castor oil.

Example: The farmer planted ricinus to produce castor oil for his business.