Lohansson Genus (Podocarpus)

1 genus of the naked plant Monroe

. Evergreen trees or shrubs. Leaf-shaped, pin-shaped, oval or scaly, spiral-shaped arrangement, near or contison, and sometimes the base twists in two columns. Male and female strains, male and female flowers or branches, singular or clustered leaves, rare tops, with most males, each male with
2
flowering pills, pollen often with two large and thin air bags, rare
3
to
4
airbags, the outer wall has a fine particle texture; Shoals, rare tops, terriers or no infarctions, there are several spiral-shaped raw or interactive slivers, the upper part of the sliver has
1
sets of raw
1
reborn embryo beads, sets are co-born with beads, the flower sleeve is thickened into a meaty fake skin, the slivers develop into fat or thick meat seed, or the flakes do not thicken. Seeds matured that year, with or without terriers, nuclear fruit, all wrapped in meaty fake skin, born on the meaty seed support or terrier end. Chromosome base of Rohanson plants
x=10
,
11
,
12
,
13
,
17
,
18
,
19
,
20
.about 100 species
Rohansong
are found in tropical, subtropical and southern temper zones and are mostly produced in the southern hemisphere. About
13,
species are found in the provinces and regions south of the Yangtze River and Taiwan, with humid or warm climates scattered in evergreen broad-leaved forests, with a wider distribution of 100-day green and bamboo cypress.rohansenko's fossils appeared in the Jurassic. The existing Rohansong plants are
7
of about
130
species, distributed in tropical, subtropical and southern temperage regions, the largest distribution in the southern hemisphere. Among them, The Rohansong genus has the largest variety, the second is the Ludong genus,
20
species. China's land-producing land
1
species, namely, land-made pine (hainan island). Rohansson genus is often divided into
3
groups: (1) chicken hair pine group (
Dacrycarpus
), seed top, no terrier, flakes slightly thickened into a meaty seed, leaf spiral arrangement, scale, Drilling form drill-shaped shawl, often born on the same tree, above and below have pore
lines, resin channel
1

; or thick into a meaty species, leaf-to-life or near-pair, egg-shaped, egg-shaped shawl-shaped or oval-shaped shawl-shaped needle-shaped, no middle veins, most side-by-side fine veins, resin road majority; (3) Rohansong group (
Podocarpu s
), seed raw, with terriers, slivers thick into a meaty seed support, leaf spiral arrangement, thin near-life, line-shaped needle-shaped or wire-shaped oval shape, only below the pore line, resin channel
1
.Rohansong plant wood material meticulous and uniform, straight texture, glossy, moderate hardness, dry after not cracking, easy to process, strong corrosion resistance, for musical instruments, stationery, carving, agricultural tools, furniture, buildings, bridges, ships and other uses. The branches containlutein, amantosin, jaundica, shannalutin, dye serotonin and rohansong
C
, bamboo cypress
A
bamboo cypress
B
and bamboo cypress

C

;。