Arboretum Botanical Glossary

Caducous Falling off very early. This feature helps describe plant form, function, or identification.

Calcareous Containing a large amount of calcium carbonate, limestone bearing, chalky.

Callus A thick tissue that develops to cover a cut or injury. Did you know? Successful grafting depends on callus tissue forming between the scion and rootstock, eventually joining the two plants into one.

Calyx The outer structure of a flower, consisting of individual petal-like parts called sepals Did you know? The leafy green crown on top of a strawberry is the persistent calyx that remains after flowering.

Campanulate Having a bell-shaped flower (like the Campanula, commonly known as Bellflower) Did you know? Bell-shaped flowers often shelter nectar from rain while giving bees a clear entrance.

Capitulum A small flower head. This feature helps explain how flowers are arranged, how pollination happens, or how seeds begin to form. Did you know? A sunflower head is not one flower. It is a capitulum made of hundreds or even thousands of small flowers.

Capsular Pertaining to a capsule. Like a capsule. This feature is connected to how seeds are protected, nourished, or moved away from the parent plant.

Capsule A dry dehiscent fruit composed of more than one carpel.

Gross Carbon Sequestration estimates how much new carbon a tree removes from the atmosphere in one year as it grows. This is an annual estimate, so it is reported in pounds per year . Learn More Climate change is an issue of global concern. Urban trees can help mitigate climate change by sequestering atmospheric carbon (from carbon dioxide) in tissue and by altering energy use…

Carnose With a fleshy texture. This feature helps describe plant form, function, or identification.