Orixa japonica
Orixa japonica
Orixa japonica is a species of the rue family ( Rutaceae ). She is the only member of the monotypic genus Orixa. Apart from the Germanized word " Orixie " has this kind no German name.
- 5.1 Notes and references
Description
Growth form and leaves
Orixa japonica is a deciduous shrub, the plant height can reach up to 3 meters. The bark is grayish. The alternate, elliptic to inversely egg-shaped, entire, 5-12 cm long and 3-7 cm wide leaves are colored dark green on top and under side lighter. The petiole is 0.5 to 1 cm long. The leaves smell when crushed aromatic. Orixa japonica shows a peculiar phyllotaxis, which is referred to as " Orixa type". The leaf order is as follows: small leaf on left side, large leaf on the left side, small leaf on the right side, large leaf on the right side, etc., with the larger leaves arise rather on top of the horizontally growing shoots and the small leaves rather at the bottom exit ( Bell 1994). In autumn the leaves turn yellow.
Inflorescences and flowers
Orixa japonica is dioecious getrenntgeschlechtig ( dioecious ). In April to May, develop the unisexual flowers that are individually female and the male in small racemose inflorescences. All flowers are greenish in color and cruciform. The four egg-shaped sepals are fused at the base. The four elliptical and dachig arranged petals are only 3 mm long. In the male flowers only an circle with four stamens is present. In the female flowers of the four carpels are free. The short style are partially fused and end with four scars branches.
Flowers formula: or
Fruit and seeds
The unripe greenish colored and later brownish expectant fruit disintegrates at maturity in three or four 8 to 10 mm large part fruits ( gap capsules ) - in the Flora of China to describe the fruit as a deformed only at the base to four follicles. These contain only a black, spherical, about 4 mm large seeds which are distributed similarly to the Burning Bush by hygroscopic stresses auto choir.
Chromosome number
There are 20 chromosomes in a diploid set called, probably from the original 2n = 18 within the Rutaceae by Dysploidie increased ( Stace et al., 1993).
Dissemination
This plant is in Japan, southern Korea and the Chinese provinces: Anhui, Fujian, Guizhou, southern Henan, Hubei, northwestern Hunan, Jiangsu, northern Jiangxi, southeastern Shaanxi, Sichuan, northwestern Yunnan, Zhejiang home and get there in the woods, thickets and sunny slopes at altitudes 500-1300 m before.
System
The genus is monotypic Orixa. Synonyms for Orixa japonica Thunb. are othera orixa ( Thunb. ) Lam., Evodia ramiflora A.Gray, Celastrus orixa ( Thunb. ) sieve. & Zucc. , C. japonicus ( Thunb. ) Thunb dilatatus K.Koch and C. ..
Ingredients
As in Ruta and Dictamnus come in Orixa also the furanocoumarins psoralen, bergapten and xanthotoxin before, the concentration of the second highest Ruta is in the study by Zobel & Brown ( 1990) graveolens before Heracleum mantegazzianum.