Friday, November 28, 2014

Sorbus aucuparia - Rowan - (Mountain Ash)

General Information
Common Name Rowan (Mountain Ash)
Scientific Name Sorbus aucuparia
Sun Tolerance Full Sun
Height 5-15 m (18-50 ft)
Spread 3 -8 m (10 - 30 ft)
Growth Rate Fast
Bloom Time Spring
Color Green,
Flower Color White
Type Tree
Native Europe, USA
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
SuperdivisionSpermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Rosidae
Order Rosales
Family Rosaceae – Rose family
Genus Sorbus L. – Mountain Ash
Species S. aucuparia

Sorbus aucuparia - Rowan - Mountain Ash
Sorbus aucuparia common name is Rowan also known as Mountain Ash. It is one of European most attractive small trees, usually seen as a solitary specimen throughout woodlands or scattered in rocky, mountainous regions. It is best known for its graceful slender outline, attractive feathery leaves and gay bunches of white flowers in May, followed by a brilliant show of bright scarlet berries in September.
The shoots are downy at first but become smooth and greyish-brown. The spur shoots are stout and numerous, carrying dark brown buds, set alternately and covered with whitish down. The leaves are arranged alternately, compound-pinnate, with five to seven pairs of oval leaflets and a terminal leaflet, each with a toothed margin. Their upper surface is deep green; the lower is grey-green, they turn bright shades of red and carmine in autumn.
The flat-topped inflorescence, a compound cyme, is comprised of numerous small creamy-white bi-sexual flowers, which open in late May. These are followed in July by green berries which during August and September turn orange and then bright scarlet. They are usually round (occasionally somewhat more barrel-shaped), and contain one or two small brown seeds. The berries have high vitamin C content; though sour, they can be made into a tasty jelly.
The bark is smooth and grey, encircled by rings of lenticels. The tree is usually erect, but some older trees develop spreading crowns. The sapwood is yellow and heartwood purplish-brown, hard and smooth, but is rarely sufficiently large to be utilized. 

Sorbus aucuparia - Rowan - Mountain Ash Full Bloom

Sorbus aucuparia - Rowan - Mountain Ash

Sorbus aucuparia - Rowan - Mountain Ash

Sorbus aucuparia Young Plant

Mountain Ash

Sorbus aucuparia Log

Bark of Sorbus aucuparia

 Leaves of  Mountain Ash

Mountain Ash Leaves

Flowers of Mountain Ash

Sorbus aucuparia - Rowan - Mountain Ash Flowers

Sorbus aucuparia Flowers 

Sorbus aucuparia - Rowan - Mountain Ash Flowers

 Flowers of  Mountain Ash

Sorbus aucuparia - Rowan - Mountain Ash Fruits

Fruits of Mountain Ash

Sorbus aucuparia Fruits

Sorbus aucuparia - Rowan - Mountain Ash

Sorbus aucuparia - Rowan - Mountain Ash

Mountain Ash

Mountain Ash


bazza said...

And it's important to know that this tree is no relation to the Ash. I think that the similar compound pinnate shape of the leaves has led to this commonly mistaken belief!
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