Orchidaceae

The
1
branch of the single leaf plant outline lily, is the
3
th major department of the bedding plant after the chrysanthemum and the legume, is a very evolutionary branch of the single leaf plant, most of which are insect-borne plants.flowers are often beautiful or scented, generally symmetrical on both sides, flowers are sliced
6
, all petal-shaped, outer wheel
3
pieces called slivers, with medium slivers and side slivers, central Petals are often perverted into lip petals, lip petals due to the sagging order of the flower or the twist of the flower terrier and often in the position of the far axis below, the base often has a sac or distance; The top of the column usually has
1
males, with
1
column head dents in front of it; There is a tongue-shaped organ between the head and the male, called the crucible, which is usually perverted by a fissure on the head of a column and secretes mucus; pollen is mostly glued into clumps, sometimes part of which becomes a handle, called a pollen handle; and the mucus on the crucible is often turned into a solid stick, called Sticky plates, sometimes with various handles or flaky extension appendages, called pickaxes, pollen clumps and pollen block handles are male sources, while sticky plates and pickaxes are the source of the column head, both of which are born together called pollen blocks, but pollen blocks are not all By this
4
parts, especially the shank, only in a very evolved group, pollen mass texture has a grain of powder and wax, the number is generally
2
to
8
. With this specially constructed flower, orchids are cleverly adapted to insect pollination. But some of it is self-pollination. Chromosomal base
x 6

29
. Pollen is mostly a four-body, and only a few of the original groups are single grains. No germination holes, with a thin wall area,
1
groove or
2
small grooves, or
3
to
4
slightly rounded sprouting holes. There is no record of orchid pollen in the history of the land, but the large fossils were found in the 3st Century (northern Italy), known as
Protor
-
chis
, close to today's Red Gate Orchid genus.。 A total
700
more
than 20,
, distributed throughout the world, mainly in the tropics. China's
166
about
,
species, with Yunnan, Taiwan, Hainan, Guangdong, Guangxi and other provinces and regions the largest variety. The main genus is the genus of stone bean orchids, magnolias, stone genus, sheep ear garlic genus, shrimp ridge orchid genus, tongue-lip orchid genus, maolan genus, horn pan orchid genus and orchid genus. China's unique genus and unique species are relatively rich, some of the unique genus is very primitive, such as into the genus, no orchids and so on. Almost half of the orchids are native orchids, i.e. attached to rock walls or trees. This type of orchid is mainly found in tropical areas, especially in tropical rainforests, such as the genus gin butterfly orchid, the genus Catalin and so on. Their stems are often perverted into fat fake bulbs. Leaves also often have a thick, layer, sometimes into flesh, but also into a cylindrical shape. Gas roots are usually more developed, the outside with thick roots, there are small holes connected, in the rain can quickly absorb water. A few kinds of gas take root or even turn green for photoneedle. In addition to the appendixed orchids, there are the land orchids and the rotten orchids. They are born on the ground and are mostly found in places rich in humus, shaded and well-drained. "Rotten orchids" do not have currotin, such as hemp, relying on honeycyclic bacteria to obtain nutrients. Orchid plants because the seeds are very small (eachfruit can contain
0.3
to
400,
million seeds), endosperm extreme degradation, embryo is not differentiated, most need to rely on
fauna
symbiosis to promote its germination, especially "rotten orchids" and orchids.。 Chinese-made orchids, permutates, stone orchids, butterfly orchids, orchids , etc. are important flowers; In addition, there are a few species in the genus Champs-Elys
can extract
flavor, which has high economic value.the classical classification system usually put Lanco and water jade together to form microseeding. But
J
. Hutchinson, for his part, advocated the division of the fake Lanco from Lanco as an independent fake Lanco, which was placed in the blood-given grass with Kimmeco Jr. It is true that the genus Xian Mao in Little Kimmeko is not only close to the fake orchids, but also similar in pollen form. But some scholars have studied single-leaf plant skin pores and found that, like other Lanco members, the pores do not have side-guard cells, while Kimmenko has
2
sub-guard cells. Others, such as columns, fruits, seeds, etc., are also different from the small Kimmeko, so some scholars still advocate the remaining of the fake Lan people in Lankone. Lanco includes
5
of
4
4.。 Fake Orayaco flower radiation symmetry or near radiation symmetry; male
2
to
3
, celery; column head,
3
cracked, no radon; pollen single grain, no flower powder block; sub-room
3
room, center shaft tire seat; seed thick, no transparent skin, very few exceptions. Including the false orchids
1
, including the three orchids and the false orchids.。The flowers are symmetrical on both sides, lip flap sacs,
2
side slivers are usually co-
2
, and the column head is born, bent downwards, not obviously
3
cracked.No moths; pollen single grain, no pollen block; sub-room
1
or
3
room, center shaft tire seat or side membrane tire seat; seeds with thick shells or transparent winged outer skin. There are 1 ethnic groups
the
, including the Lan and Dolan genus, etc.。 Bird's Nest Orchidflowers are symmetrical on both sides, with very few exceptions; males are usually
1
, withering; column heads are born, often recessed, rarely toped, usually with crickets; pollen is generally a quatelia, forming pollen blocks; sub-rooms
1
room, side membrane tire seat; seeds are generally transparent winged outer skin. Divided into two ethnic groups: (1) the Bird's Nest Orchids, including some very primitive genus, such as the Genus Jinlan, the Genus Bili orchids, and the Genus No Orchids. (2) The tree orchids, including the Wan belt orchids and the stone herrings, are native to the tropics.。 Lanyako flower on both sides of symmetry; male
1
, the flower medicine base and the column fully co-exist, celibulus; the column head side birth, depression or protruding, with a slug; pollen for the four-way, forming pollen blocks, pollen particles, composed of many small pieces; sub-room
1
room, side fetal seat; seeds with transparent outer skin. Including the Lan
1
, including the Red Gate Orchid genus and the Jade Phoenix Genus.。