Friday, February 20, 2015

Sorbus oligodonta - Kite-Leaf Rowan

General Information
Common Name Kite-Leaf Rowan
Scientific Name Sorbus oligodonta
Sun Tolerance Full Sun
Height 5-15 m (17-49 ft)
Spread 3-5 m (10-18 ft)
Growth Rate Fast
Bloom Time Spring
Color Green,
Flower Color Pink
Type Tree
Native Asia, Europe, USA
Classification
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. – Rowan
Species S. oligodonta

Sorbus oligodonta - Kite-Leaf Rowan
Sorbus oligodonta commonly known as Kite-leaf Rowan. It is native to northern Yunnan, southeastern Tibet, and western Sichuan in China also to Myanmar. 
It is a small to medium-sized deciduous tree growing to 5–15 m (17-51 ft) in height. It’s bark is rounded crown and dark grey and slender shoots. The leaves are green to slightly glaucous-green above, paler beneath, 10–18 cm long, pinnate with 9-17 oval leaflets 3–4.5 cm long and 1–2 cm broad, broadest near the apex (hence the English name 'kite-leaf'), rounded at the end with a short acuminate apex, and very finely serrated margins; the basal leaflets are smaller than the apical leaflets. The leaves are changed to a dark orange-red in late autumn and later than most other rowan species. It blooms white flowers in late spring to early summer. The flowers are 8 mm diameter, with five yellowish-white petals and 20 yellowish-white stamens; they are produced in corymbs 6–12 cm diameter. The fruit is a pome 7–8 mm diameter, pale to deep pink with a persistent dark carpel, maturing in late autumn; the fruit stalks are distinctively red. The fruit commonly persist long into the winter after leaf fall; after being softened by frost they are readily eaten by thrushes and waxwings, which disperse the seeds. 
In USA and Europe, it is grown as an ornamental tree for its decorative pale pink. 


Sorbus oligodonta - Kite-Leaf Rowan Leaves

Sorbus oligodonta - Kite-Leaf Rowan Fruits

Sorbus oligodonta - Kite-Leaf Rowan

Sorbus oligodonta - Kite-Leaf Rowan

Sorbus oligodonta - Kite-Leaf Rowan

Sorbus oligodonta - Kite-Leaf Rowan

Friday, February 6, 2015

Sorbus glabrescens - White-Fruited Rowan

General Information
Common Name White Fruited Rowan
Scientific Name Sorbus glabrescens
Sun Tolerance Full Sun
Height 8-15 m (26-49 ft)
Spread 5-10 m (18-33 ft)
Growth Rate Fast
Bloom Time Spring
Color Green,
Flower Color Pink
Type Tree
Native Asia, Europe, USA
Classification
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. – Rowan
Species S. glabrescens

Sorbus glabrescens - White-Fruited Rowan
Sorbus glabrescens  commonly known as White Fruited Rowan. It is a species of rowan and native to China.
It is a small to medium-sized deciduous tree. It is growing to 8–15 m (26 – 49 ft) in height and with a rounded crown and dark grey bark and stout shoots. The leaves are glaucous blue-green above, paler beneath, 10–26 cm long, pinnate with 11-17 oval leaflets 3–5.5 cm long and 1–2 cm broad. These are broadest near the middle, rounded at the end with a short acuminate apex, and very finely serrated margins. The leaves are become orange or red in late autumn and much later than most other rowan species. It blooms in late spring to early summer. The flowers are 8 mm diameter, with five white petals and 20 yellowish-white stamens; they are produced in corymbs 9–15 cm diameter. The fruit is a pome 7–8 mm diameter, white with a small persistent pinkish carpel. Fruits matured in late autumn and stalks are distinctively red. The fruit commonly persist long into the winter after leaf fall; after being softened by frost they are readily eaten by thrushes and waxwings, which disperse the seeds.
S. glabrescens is widely grown as an ornamental tree for its decorative white fruit in western Europe and the Pacific Northwest of North America


Sorbus glabrescens - White-Fruited Rowan 

Sorbus glabrescens - White-Fruited Rowan Fruits

Sorbus glabrescens - White-Fruited Rowan

Sorbus glabrescens - White-Fruited Rowan

Sorbus glabrescens - White-Fruited Rowan

Sorbus glabrescens - White-Fruited Rowan in Autumn

Fruits of White-Fruited Rowan

Sorbus glabrescens - White-Fruited Rowan Leaves