Trees on the Yale Nature Walk

Tree ID: 141
Date of tree entry: February 16, 2022
Ginkgo biloba, also known as the maidenhair tree, is considered one of the oldest plants on Earth. This tree is native to China and is often looked at as “living fossil” since it is the last living species of the Gingkoales, an order which appeared over 290 million years ago. The actual maidenhair tree appeared later, almost 180 million years ago during the Jurassic period. These large trees reach heights of up to 50m in China, but in North America, their average height is between 20 and 35m. As a large, deeply rooted tree, the maidenhair is very resistant to extreme weather changes, making it the perfect tree to be planted between Yale Health and Science Hill. The tree watches over the stressed students rushing to Science Hill and it greets the hospital’s daily visitors, rain or shine.
Tree ID: 138
Date of tree entry: February 16, 2022
The bur oak is a large, deciduous, slow-growth tree with simple leaves and a uniform crown of thick, spreading branches. Bur oaks are extremely resilient, displaying high levels of fire-resistance (thick bark), cold-tolerance, aerosol and soil salt tolerance, and drought resistance (deep taproot), surviving even in mineral-poor soil. The Bur oak has monoecious character with imperfect flowers, with a strategy of masting. This means acorns are produced in large quantities every few years in order to overwhelm consumption by wildlife. Bur oaks have a lifespan exceeding 200 years, approaching 1000 years. It has a wide distribution in North America, being native to Eastern NA. Bur oaks initial height growth is normally slow for the first 3 - 5 years, dependent on environmental conditions (sun exposure in particular). Based on the height, diameter, and growth factor, this individual is approximately 12 years old.
Tree ID: 144
Date of tree entry: February 16, 2022
The common boxwood is a beautiful, thick shrub that provides clear aesthetic value to its surroundings. This particular shrub is displayed individually outside Yale Health, though they are commonly planted in close proximity to other common boxes to form a continuous hedge. We have named this shrub Penelope, and she adds great character to the landscape through her unpredictable and jagged form.
Tree ID: 135
Date of tree entry: February 15, 2022
The White Fringetree (Chionanthus virginicus) is a dicot, deciduous tree with grey bark. During the spring and summer the tree blooms with dark green leaves small white flowers that don nicknames such as "Snowflower Tree," "Flowering Ash," "Old Man's Beard," and "Grandfather Graybeard." The the height of our tree is 2.9 meters, but adult Fringetrees can grow up to 10 meters tall. The DBH is 0.040 meters (measuring the four bottom, thickest pieces of the trunk). The fruiting bodies appear as dark blue, oval shaped clusters of drupes. The Fringetree is related to the olive family, and the fruiting bodies reflect this similarity. As White Fringetrees tend to be late bloomers, we won't expect flowers on our tree until April or May, but are excited to smell the famously sweet fragrance when it blooms.
Tree ID: 133
Date of tree entry: February 15, 2022
Have you ever seen such a beautiful sight? If you answer that question with a yes, but you haven’t made it to the cross-section between Sachem and Prospect street, then you are lying. You will not see true beauty until you reach Ingalls rink. There lies, Petunia. This Wych Elm can be found outside "The Whale", a hockey rink located in New Haven, Connecticut. It thus can be referred to as the Guardian of the Whale, overlooking this ice rink's parking lot as well as the food trucks camped outside of Sachem St. The Wych Elm is a rather rare sight as it has been decimated by Dutch Elm Disease, a fungal disease that plagues elms since it arrived in the UK in the 1960s [1]. This tree can grow to a height of 30m [1] but currently stands at a small 2.5m. Make sure to swing by and take a look at it!
Tree ID: 134
Date of tree entry: February 15, 2022
Beautiful little tree located outside of Pauli Murray, perfect size to hug. Friendly tree
picture of an eastern redbud
Tree ID: 136
Date of tree entry: February 15, 2022
The eastern redbud is a deciduous tree with a central leader and round/oval form. Its leaves are alternate, simple, heart-shaped, and range from 3-5 inches high and wide. The leaves take on an alternate form, and have entire margins. The apices are emarginate. The bases are cordate. This tree sits outside the Murray gate facing Sachem St and the food carts. 13.1 units DBH
Tree ID: 131
Date of tree entry: February 15, 2022
This American Bittersweet is located outside the 'Whale' an ice rink considered a work of architectural majesty designed by Erno Saarinen. However, the real work of architectural splendor is this tree (a.k.a. Lillian) designed by nature.
Photograph of the red maple with full summer foliage
Tree ID: 132
Date of tree entry: February 15, 2022
This red maple calls the patch of grass outside Ingall's Rink home, but its species can be found along the East Coast. Red maples have the greatest north-south range of any species that lies exclusively on the East coast of North America, growing in forest from Newfoundland down to the southern tip of Florida. Stop by in the autumn to see the red maple's signature flame red foliage.
Tree ID: 5034
Date of tree entry: April 27, 2021
This blossoming crab apple tree is the main character of Berkeley College's North Court. Malus trees are a group of 42-55 small, deciduous trees or shrubs that grow 4-12 meters in height. Malus trees are native to the temperate zone of the Northern Hemisphere. Malus trees are often self-sterile which means that cross-pollinators like bees are recruited to spread pollen from the stamen of one Malus flower to the stigma of another Malus flower. However, it is common that Malus species freely hybridize, which can make it difficult to categorize a unidentified Malus tree based solely on its physical characteristics.

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