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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.
Crataegus phaenopyrum is a species of hawthorn commonly known as Washington hawthorn or Washington thorn. [2] It is widely grown as an ornamental plant, and can reach 10 m (about 32 feet) in height. The small red berry-like fruit grow closely together in large clusters and are food for squirrels and birds. They have a mild flavor and can be ...
Crataegus mexicana is a species of hawthorn known by the common names tejocote, manzanita, tejocotera and Mexican hawthorn. It is native to the mountains of Mexico and parts of Guatemala, and has been introduced in the Andes. [2] The fruit of this species is one of the most useful among hawthorns.
Crataegus monogyna, known as common hawthorn, whitethorn, one-seed hawthorn, or single-seeded hawthorn, is a species of flowering plant in the rose family, Rosaceae. It grows to about 10 metres (33 feet) tall, producing hermaphrodite flowers in late spring. The berry-like pomes (known as haws) contain a stone-encased seed.
Crataegus laevigata, known as the Midland hawthorn, [3] English hawthorn, [3] woodland hawthorn, [3] or mayflower, is a species of hawthorn native to western and central Europe, from Great Britain (where it is typically found in ancient woodland and old hedgerows [4]) and Spain, east to Romania and Ukraine.
Crataegus douglasii is a compact erect bushy shrub growing to 8–9 metres (26–30 feet) tall with a trunk of up to 10 centimetres (4 inches) thick. [4] It is covered in fan-shaped green leaves about 2.5–5 cm (1–2 in) long [4] with teeth along the distal margin.
Hawthorn, Pennsylvania, a city in the United States; Hawthorn, Victoria, a suburb of Melbourne, Australia . Hawthorn railway station, Melbourne in the above suburb; Electoral district of Hawthorn, a Victorian Legislative Assembly seat based on and named after the above suburb
When testing wood in lumber form, the Janka test is always carried out on wood from the tree trunk (known as the heartwood), and the standard sample (according to ASTM D143) is at 12% moisture content and clear of knots. [3] The hardness of wood varies with the direction of the wood grain. Testing on the surface of a plank, perpendicular to the ...