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Crataegus pennsylvanica, known as the Pennsylvania thorn, [2] is a species of hawthorn native to Delaware, New York, North Carolina, Ontario, Ohio, and Pennsylvania, [2] that grows to about 8 m in height. [2] The mature trees have few thorns. [2]
This page alphabetically lists some known plant species occurring in the US state of Pennsylvania. Currently about 2,100 native and 1,300 non-native plant species are known in Pennsylvania. [1] According Pennsylvania Department of Conservation and Natural Resources, the known species make up 37% of Pennsylvania's total wild plant flora.
Crataegus (/ k r ə ˈ t iː ɡ ə s /), [2] commonly called hawthorn, quickthorn, [3] thornapple, [4] May-tree, [5] whitethorn, [5] Mayflower or hawberry, is a genus of several hundred species of shrubs and trees in the family Rosaceae, [6] native to temperate regions of the Northern Hemisphere in Europe, Asia, North Africa and North America.
Maclura pomifera, commonly known as the Osage orange (/ ˈ oʊ s eɪ dʒ / OH-sayj), is a small deciduous tree or large shrub, native to the south-central United States.It typically grows about 8 to 15 metres (30–50 ft) tall.
The flowers are white and have a scent generally considered unpleasant. The fruits are small pomes that vary in colour, usually a shade of red. [3] Most wild varieties [specify] of the tree are heavily armed in sharp thorns several centimeters long. [citation needed] A Cockspur Thorn tree in flower, Oxfordshire UK, 5th May 2022.
This category contains the native flora of Pennsylvania as defined by the World Geographical Scheme for Recording Plant Distributions.Taxa of the lowest rank are always included; taxa of higher ranks (e.g. genus) are only included if monotypic or endemic.
Notably, the plant is armed with spines, prickles, or thorns. The dimensions of the leaf blade range from 110 to 220 mm in both length and width. Each leaf possesses a leaf stalk. The fruit, it is of a fleshy nature. The bark of the mature plant is thin and smooth, while the twigs exhibit a winter coloration in shades of brown or gray.
The tree generally reaches heights of about 31 m (102 ft), [5] but exceptional trees have been recorded up to 53 m (174 ft). [8] The diameter of the trunk at breast height is often 1.5 m (4 ft 11 in), but again, outstanding trees have been recorded up to 1.75 m (5 ft 9 in). [ 9 ]