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Sorbus aucuparia, commonly called rowan (/ ˈroʊən /, [ 3 ] also UK: / ˈraʊən /) and mountain-ash, is a species of deciduous tree or shrub in the rose family. It is a highly variable species, and botanists have used different definitions of the species to include or exclude trees native to certain areas. A recent definition [ 4 ] includes ...
Eucalyptus amygdalina var. regnans F.Muell. Eucalyptus regnans, known variously as mountain ash (in Victoria), giant ash or swamp gum (in Tasmania), or stringy gum, [3] is a species of very tall forest tree that is native to the Australia states of Tasmania and Victoria. It is a straight-trunked tree with smooth grey bark, but with a stocking ...
Cormus. Torminaria. Chamaemespilus. Sorbus is a genus of over 100 species of trees and shrubs in the rose family, Rosaceae. Species of Sorbus (s.l.) are commonly known as whitebeam, rowan, mountain-ash and service tree. The exact number of species is disputed depending on the circumscription of the genus, and also due to the number of apomictic ...
The emerald ash borer (Agrilus planipennis), also known by the acronym EAB, is a green buprestid or jewel beetle native to north-eastern Asia that feeds on ash species (Fraxinus spp.). Females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years.
Sorbus americana is a relatively small tree, reaching 12 metres (40 ft) in height. [5] The American mountain-ash attains its largest specimens on the northern shores of Lake Huron and Lake Superior. [6] It resembles the European mountain-ash, Sorbus aucuparia. Light gray, smooth, surface scaly. Branchlets downy at first, later become smooth ...
The rowans (/ ˈ r aʊ ə n z / ROW-ənz or / ˈ r oʊ ə n z / ROH-ənz) [1] or mountain-ashes are shrubs or trees in the genus Sorbus of the rose family, Rosaceae. They are native throughout the cool temperate regions of the Northern Hemisphere , with the highest species diversity in the Himalaya , southern Tibet and parts of western China ...
It is a pest to green or red ash and white ash trees although any species of ash is vulnerable; female insects lay groups of eggs in slits in the leaflets of emerging leaves in late spring. [1] [2] [3] The larvae are greenish or yellow-white, and they grow to between 14 and 20 mm (0.6 and 0.8 in) long. [4]
Eucalyptus obliqua is a tree that typically grows to a height of 90 m (300 ft) or sometimes a mallee and forms a lignotuber. The trunk is up to 3 m (9.8 ft) in diameter and has thick, rough, stringy or fibrous bark. Branches more than 80 mm (3.1 in) in diameter have stringy bark and thinner branches have smooth greenish or greyish bark.