Arboretum Botanical Glossary

A botanical reference guide of morphological terms, plant structures, propagation techniques, and campus flora definitions.

368 Botanical Definitions 10 Categories A–Z Alphabetical Index Illustrated Growth Forms

Browse by Subject Category

Explore terms organized by botanical structure, morphology, and arboricultural concepts.

🌳

Illustrated Growth Forms & Tree Silhouettes

Compare visual architectures: fastigiate, columnar, weeping, spreading, and more.

Fastigiate Columnar Pendulous / Weeping
Try searching:
Showing 368 definitions
Synonyms: Viscids

Viscid Sticky or gummy. This feature helps describe plant form, function, or identification. Did you know? Viscid plant surfaces can trap small insects, pollen, or debris because they are sticky.

Synonyms: winter desiccations

winter desiccation Winter desiccation, or winter burn, occurs when evergreens lose more moisture through needles or leaves due to wind and sun than their roots can replace from frozen soil. Symptoms include brown/red foliage (often on the south/west side) and twig dieback. Prevent it by watering deeply in autumn, mulching, and using burlap windbreaks. Did you know? Winter desiccation often affects broadleaf evergreens because leaves…

Synonyms: dry, dry habitat, Xerics

Xeric Dry, or pertaining to dry areas. This term helps explain how a plant grows, survives, spreads, or fits into its habitat. Did you know? Xeric plants often have small leaves, waxy surfaces, deep roots, or water-storing tissues that help them survive dry sites.

The Purdue Arboretum is a collaboration between the Department of Horticulture and Landscape Architecture and Administrative Operations

Purdue Arboretum, 625 Agriculture Mall Dr, West Lafayette, IN, 47907
© 2026 Purdue UniversityAn equal access/equal opportunity universityCopyright ComplaintsMaintained by Purdue Arboretum Explorer
Contact Purdue Arboretum at arboretum@purdue.edu for accessibility issues with this page | Accessibility Resources | Contact Us