Ginkgo (formal name: Ginkgo Biloba L. ) , belong to deciduous leaf arbor for ginkgo division, ginkgo. Ginkgo is deciduous leaf large tree, pectoral diameter can amount to 4 meters, young tree bark is close flowing, grayish, the leather dust-colour of large tree, irregular slit, coarse; Have long branch and grow to be apart from state short branch adagio. Childhood and circle of crown of a tree of prime of life are cone-shaped, form of old wide egg; Branch close verticillate, inclined on extend (Chang Jiaoxiong individual plant develops the big branch of female individual plant) . Foliaceous each other is unripe, on long branch radiation shape comes loose unripe, have long and thin Xie Bing, sector, two sides is virescent, without wool. Come loose on long branch unripe, on short branch bunch is born. Its vein form is " nervation of bifurcate of 2 branch shape " . Go up in long branch constant 2 crack, base ministry wide wedge. The ball spends individual plant of different of male and female, unisexual, be born within the armpit of the scale shape leaf of short branch top, show bunch to lay condition. Blossommed in April, mature in October, the seed has long stem, flagging, often be circle of elliptic, chief body pouring egg, egg or close pellet form. Seed coat flesh is qualitative, by whitening, episperm flesh is qualitative, ripe when yellow or orange yellow.
The fructification common that ginkgo cultivates weighs ginkgo, because of this ginkgo renown ginkgo tree. Ginkgo tree grows slower, life is extremely long, natural condition falls to want more than 20 years to knot ginkgo fruit from grow, the ability after 40 years is many result, accordingly somebody calls it " a surname is cultivated " , have " fair plant and grandson must feed " meaning, it is the old longlived person in the tree, have view and admire, officinal and economy, equal in value value.
The Huangyu that somebody highly praises ginkgo leaf is high:
Ginkgo cultivates which days of life, call in gale, coiling infinitely leaf begins to issue " rain " . It seems that leaf does not grow from its body, however others is extortionary stick go up.
Autumn wind blast position is blown, yellow Xie Piao wave leisurely ground falls down from the tree. Hoping to flutter " yellow butterfly " , I stay to think slow-wittedly: Why do they want go at earth? "Deciduous leaf is not heartless other people, change Chun Ni more protect a flower. " perhaps they resemble falling the flower is same, also be to change rich soil, return large tree?
The autumn, it is the season with ginkgo the most beautiful tree. Leaf is green at first in the belt is yellow, became then olive, arrived deep autumn, man Shudou became golden look. The leaf of bright yellow falls in the shine upon of sunshine, gave out dazzling ray.
The autumn came, the ginkgo leaf of light green begins extensive to fizzle out, arrived especially Cold Dew Frost's descent is seasonal, ginkgo leaf gradually by green become yellow, again by yellow become golden. The ginkgo leaf of this moment must cultivate ginkgo tree deck golden, a single person is honorable, beautiful all the more.
Photography: Drive tide
