This nature preserve offers about 57 acres of land and wildlife. The O’Shaughnessy preserve is located within the Twin Lakes preserve in Delaware county near the Columbus Zoo and Aquarium just north of Shawnee Hills. This preserve offers an array of diverse ecosystems including bottomland with elm and ash species, upland is full of hickory and oak, along with several species of buckeye throughout the preserve.

Poison Ivy (Toxicodendron radicans)

You can identify this nasty plant by it’s 3 shiny leaflets. Each leaflet can be from 2-4inches in length and can come in the form of a shrub or a vine. When its a vine, it can usually take on a “hairy” form which makes it very distinct running up the sides of trees. Poison ivy can be found all over Ohio and, unfortunately, is very common. The stem is reddish in the spring and greenish in the summer and a orangish in the fall. When touched, the oils can soak into the skin and cause a breakout rash that can be easily spread.

Flowers and Inflorescences

Red clover (Trifolium pratense)

This plant was located fairly close to the walking trail in the preserve. The flower is unilateral, 1-3 leaflets beneath flower head, each flower has 5 pink to white petals hypogenous, and is apocarpus.

Inflorescence- Head

Fruit- legume

Arrowleaf ragwart ( Senecio triangularis)

This plant was located fairly close to the walking trail in the preserve. This weed can grow to 1-5 feet tall, is unilateral, has 8-10 triangular leaves, hypogynous, syncarpus.

Inflorescence- Raceme

Fruit- plume

Dame’s Rocket (Hesperis matronalis)

This plant was located fairly close to the walking trail in the preserve. The flower is unilateral, has 4 purple petals, can grow to 1-3 feet, hypogynous, syncarpus, corolla of 4 pets, calyx of 4 sepals.

Inflorescence- Raceme

Fruit- silique

Oxeye Daisy (Leucanthemum vulgare)

This plant was located fairly close to the walking trail in the preserve. The flower is unilateral, can grow 6-31 inches in height, alternate, white leaves, ray petals, androecium contains 5 stamens united by anthers, epigynous.

Inflorescence- Head

Fruit- achene

Common Yarrow (Achilea millefolium)

This plant was located fairly close to the walking trail in the preserve. The flower is unilateral, alternate white leaves, epigynous, calyx of 5 small distinct petals, gynoecium of 2 united carpels.

Inflorescence- umbel

Fruit- schizocarp

Invasive Plants

Honeysuckle (Lonciera morrowii)

Origin: Japan, Korea, Northeast China

Ecosystem: Everywhere, used for erosion control

Suggested Control: mechanical and herbicides

Autumn Olive (Elaeagnus umbellata)

Origin: East Asia, Japan, naturalized in Costa Rica and the Netherlands

Ecosystem: Everywhere, used for erosion control

Suggested Control: kill root system and the parts above ground

Callery Pear (Pyrus calleryana)

Origin: China and Vietnam

Ecosystem: Everywhere, used as an ornamental tree. However, it smells awful

Suggested Control: mechanical and herbicides

Japanese Stiltgrass (Microstegium vimineum)

Origin: Japan and China

Ecosystem: Everywhere, introduced by accident in packing material transport

Suggested Control: broad-spectrum herbicides

Multiflora Rose (Rosa multiflora)

Origin: Japan, Korea, and eastern China

Ecosystem: Everywhere,  introduced as root stock for ornamental roses

Suggested Control: herbicides, cutting, basal bark applications

 

Woody Plant Fruit Identification

Black Walnut (Juglans nigra)

The fruit is called a nut and is closely related to the walnut family.

Boxelder (Acer negundo)

The boxelder fruit is called a samara which is what most maples have. Boxelder is part of the maple family.

Buckeye (Aesculus)

The fruit of a buckeye tree are capsules with leathery husks and can be spiked. This makes them very easy to identify. The fruit is also very toxic.

Callery Pear (Pyrus calleryana)

The fruit is called a pome. This are able to be identified due to them growing in clusters together.

Hackberry (Celtis occidentalis)

The fruit of the hackberry is called drupes and are a good source of food for natural wildlife.

Mosses/Lichens

Fern Moss

Toothed Plaginomnium Moss

Rounded Tongue Moss