Datisca

Feathery leaves of Datisca cannabina.

Sham hemp ( Datisca ) is the only plant genus of the family of the apparent hemp plants ( Datiscaceae ) within the order of pumpkin -like ( Cucurbitales ). There are only two ways.

• 4.1 External links

Description

Appearance and leaves

Datisca species are high-growing, perennial herbaceous plant, reaching heights of growth of up to 2 meters. You see hemp ( cannabis ) are very similar, hence the German name. The green parts are bare. The alternate, stalked leaves possess unpaired pinnate leaf blades. The leaf edges of the leaflets are serrated. The stomata are anomocytisch. Stipules absent.

Inflorescences and flowers

On long, leafy branches are located terminally, bündlige inflorescences. Datisca cannabina is dioecious getrenntgeschlechtig ( dioecious ), Datisca glomerata androdiözisch. Petals absent. In male flowers three to nine sepals and eight to 25 free, fertile stamens are present. The hermaphrodite flowers three to eight sepals and three to five free, fertile stamens and the ovary as in the female flowers are present. The stamens are short. In the female flowers are three to eight sepals and three to five carpels have become an inferior ovary fused with an equal number of free pencils as carpels. The ovary chamber 30 to 100 ( "many" ) anatrope containing bitegmische, tenuinucellate ovules. Pollination is by wind ( anemophily ).

Fruit and seeds

They are included stalked, oblong, leathery, or three - vierrippige (rarely fünfrippige ) capsule fruits that begin at the upper end between the then still existing stylus to open and many (30 to 100) small seeds. The seeds contain more or less no endosperm. The straight embryo is well developed, but small and has two oil-bearing seed leaves ( cotyledons ).

Chromosome numbers and ingredients

The basic chromosome number is x = 11 to flavonoids kaempferol and quercetin were detected.

Dissemination

The family has a disjoint area: One type of this family has their home in southeastern Europe and western Asia; the other in western North America. In each case, arid areas.

System

In the genus Datisca and therefore the family appearance of the hemp plant ( Datiscaceae ) there are only two types:

• Datisca cannabina L. (including Datisca nepalensis D.Don ): The pinnate leaves are 15-30 cm long stalked with five to eleven, 2.5 to 4 cm long, toothed leaflets. The home extends from the eastern Mediterranean (Crete, Turkey, Lebanon, northern Iran) to the Himalayas: from Kazakhstan to Nepal, including Afghanistan, the western Pakistan and western China. Especially the female plants look decorative and are therefore planted as a rare ornamental plants.
• Datisca glomerata ( C.Presl ) Baillon: The home is western North America: California and Nevada.

To the family of sham hemp plants ( Datiscaceae ) formerly included the taxa of Tetramelaceae. Both families are most closely related to the Begoniaceae.

Swell

• The Datiscaceaee in APWebsite family. (Section Description and systematics)
• The Datiscaceae at DELTA family. ( Description section )
• Mohammad Siddiqi Aamin: The Datiscaceae in the Flora of Pakistan family. ( Description section )
• Willis Linn Jepson: A Flora of California: Volume II Capparidaceae to Cornacea. 1936, page 537 ( section description)