Pneumatophores are specialized roots that grow upwards from the soil, often in areas with poor drainage or high water tables. They allow plants to access oxygen, which is scarce in these environments. Here are some examples of plants with pneumatophores:

Mangrove Trees: This is perhaps the most well-known example. Many mangrove species, like the Red Mangrove (Rhizophora mangle), have pneumatophores that resemble pencils or small fingers protruding from the muddy soil.

Bald Cypress (Taxodium distichum): This deciduous conifer grows in swampy areas and develops "knees" or pneumatophores that emerge from the water or shallow soil. These knees are typically conical or rounded.

Tupelo Gum (Nyssa aquatica): This tree also grows in swamps and wetlands, and its pneumatophores resemble small, conical projections that emerge from the water.

Water Tupelo (Nyssa biflora): This smaller tree species also thrives in swampy areas and develops pneumatophores that look like small, rounded knobs or projections.

Black Mangrove (Avicennia germinans): This mangrove species has pneumatophores that are shorter and more numerous than those of the Red Mangrove. They are often described as being "peg-like" in appearance.

Buttonwood (Conocarpus erectus): This tree grows in coastal areas, and its pneumatophores are often described as being "button-shaped" or "disc-shaped".

These are just a few examples of plants with pneumatophores. Many other species of plants that live in waterlogged environments have evolved similar adaptations to access oxygen.