Podostemales

1 small eye of the
of
-leaf plant. Aquatic herbs, extremely diverse in form, shape and
tissue
similar to algae, moss, herds, etc., simple structure, most kinds of root, stem, leaf variation is almost impossible to distinguish, the tube bundle degradation, only traces. Flowers are free of flowers or single flowers, with or without Buddha flame-shaped joint slivers wrapped. Flowers
0

3
to majority; males
1
to
2
to majority; pollen single cells or
2
cells; sub-room upper,
1
to
3
rooms; fruitfruit,
2
petals cracked or
3
cracked; diaphragm
2
pieces, divided into two sides of the base of the flower wire, or short. Chromosomal base
x x 20
. There are
46
species

species in the world, mainly in the tropics, namely South America, Africa and southern Asia. China is known to
2
,
2
genus,
3
species. It was found in Fujian, Guangdong, Yunnan and Hainan provinces south of Nanling. It grows in rivers and waterfalls with rapid water flow, clarified water quality, high oxygen content and abundant sunlight, and is attached to rocks, rocks and other sediments at the bottom of the water. General spring and summer rainy, underwater growth, the formation of buds, autumn and winter shallow water, when exposed to the water, rapid flowering results, scattered seeds, complete the history of life. Usually a year of life, occasionally year-round water depth does not retreat, long-term can not be exposed to the water, can also become two years of life or perennation.the beginning
20th century, plant taxonomists attached great importance to the origin, evolution and propagation of the purpose.
F
．
A
．
F
．
C
． Venter had argued that such plants originated in South America and spread to Africa and ended in Asia, and that there would be no such plants east of Java because of the Pacific Ocean spacing. However,

1927, Ichiro Shimura and Junichiro Miyamura discovered the
Cladopus japonicus
in Kyusju, Japan, and there are now
2
species
6
species in Japan.
in 1944 and
,
2
branch
2
species were also found in Changding County, Fujian Province, China,
3
species, namely, the three rifts of shiman, Sichuan grass of Fujian and Sichuan grass of China, thus negating the heavy ocean separation of such plant distribution.G
． Bentham and
W
.
J
． Hooker divided the plants into
1

4
groups, Engler
-
Gilg (
Engler-Gilg
) into
3
sections: (1) Kawashi (1) Kawashiko (
) Po-dostemaceae
),
(2) Tristaceae
), (3)
Hydrostachyaceae
), under
Rosales
). Later,
F
.
L
．
E
． Dills changed to Kawashi (
Podostemales
) and
3
division. The 1st classification system has been adopted recently. It is generally believed to be closest to tiger-eared grass. Some species are available for consumption.