|
|
Davidia involucrata - Dove tree
The Dove tree (Davidia involucrata) is a medium-sized deciduous tree. It is also known as the Handkerchief tree. The tree is native to central China, from Hubei to southern Gansu, south to Guizhou, Sichuan and Yunnan.
The Dove tree is the only member of its genus, but there are two varieties differing slightly in their leaves, Davidia involucrata var. involucrata, which has the leaves thinly pubescent (short-haired) on the underside, and Davidia involucrata var. vilmoriniana, with glabrous (hairless) leaves. Some botanists treat them as distinct species, with good reason as the two taxa have differing chromosome numbers so are unable to produce fertile hybrid offspring.
It is a moderately fast-growing tree, growing to about 20-25 m in height, with alternate cordate leaves resembling those of a linden in appearance, except that they are symmetrical, and lacking the lop-sided base typical of linden leaves; the leaves are mostly 10-20 cm long and 7-15 cm wide and are ovate to heart-shaped.
The Dove tree is best known for its flowers. These form a tight cluster about 1-2 cm across, reddish in colour, each flower head with a pair of large (12-25 cm), pure white bracts at the base performing the function of petals. These hang in long rows beneath the level branches. The flowers are at their best in late May. On a breezy day, the bracts flutter in the wind like white doves, hence the English name for this tree.
The fruit is a very hard nut about 3 cm long surrounded by a green husk about 4 cm long by 3 cm wide, pendulous on a 10 cm stalk. The nut contains 3-6 seeds.
The species was introduced from China to Europe and North America in 1904, and is a popular ornamental tree in larger gardens. Most trees in cultivation are var. vilmoriniana, which has proved much better able to adapt to the climatic conditions in Europe and North America.
The Dove tree is also known as the Pocket Handkerchief Tree because the white bracts appear as a folded handkerchief around flower heads.
More Types of Flowers
Gazania is a genus of flowering plants in the family Asteraceae, native to Southern Africa. It is often planted as drought-tolerant ground cover.
Species
Gazania linearis is a species of flowering plant in... more >>>
Impatiens is a genus of about 900-1000 species of flowering plants in the family Balsaminaceae. The genus has a wide distribution throughout the northern hemisphere and tropics.
Some species are annual plants and produce flowers... more >>>
Arisaema triphyllum (Jack-in-the-Pulpit, Bog onion, Brown dragon, Indian turnip, Wake robin or Wild turnip) is a herbaceous perennial plant growing from a corm. It is a highly variable species typically growing from 30 to 65 cm in height with... more >>>
Isatis is a genus of about 30 species of flowering plants in the family Brassicaceae, native to the Mediterranean region east to central Asia.
Selected Species
Isatis tinctoria - Woad (or glastum) is the... more >>>
Zamia is a genus of cycad of the family Zamiaceae, containing around 50 species, native to North, Central and South America. Species occur as far north as Georgia in the United States to as far south as Bolivia.
The genus... more >>>
Types of Flowers: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
|