These modified leaves are present in flowers that have no clear distinction between sepals and petals.

In plant classification, a group of plants with common characteristics that can cross-breed with one another.

A type of plant that stores up water in its tissues (xerophytic) as an adaptation against drought conditions. Succulents have a fleshy appearance externally and a juicy internal appearance. The cactus [..]

In sexual reproduction, the product of the union of sperm and egg. In flowers, one of two sperm cells carried by pollen tubes into the ovary unites with an egg held within an ovule forming a zygote.

A plant grown from seed, that completes its life cycle (from seed to flowering) in the span of one season.

The primary ‘male’ reproductive structure at the tip of a flower’s stamen. The anther produces dust-like grains of pollen; which is responsible for fertilizing the ovules and the eventual formation of [..]

A specialized spin-bearing structure found on the stems of all members of the cactus family. It is basically a modified stem that spines grow out of in place of leaves.

Roots that emerge from above the ground usually from a stem node as additional support for the plant, to enable climbing, or to increase absorption and exchange of nutrients and gases.

A plant grown from seed, that completes its life cycle within the span of two growing seasons. The plant spends the first season growing leaves, and flowers and produces seeds in the second season.

Also known as the “System of Classification”. The current scientific method of naming species of organisms (plants and animals). The system was developed in the 18th century by Linneus, a Swedish natu [..]