Evergreen tree. Production in southwest China's Guangxi, detailed solid wood, for building ships, machinery, etc. ﹑ use. To one of our precious timber species.
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No. 2
蚬木
Clams wood (excetrodendron hsiemvu (chun et how) ht chang et miau), also known as fire wood, linden branch tiliaceae, evergreen trees, endangered species. Distributed in Guangxi and Yunnan section elevation 700-900 m limestone mountain tropical monsoon forest. This species distribution center in southern Guangxi, Yunnan, southeast Limestone westward to areas north across the Tropic of Cancer is becoming rare species disappear. Yuanjiang is in the northern margin of the distribution of the species, and occasionally. Saplings shade, over age 10 need full sunlight. March flowering, fruit ripening in June, well spaced 2-3 years. It is one of the limestone constructive species of tropical seasonal rainforest of northern native and endemic plants are tropical limestone, there are more important research value. It's heavy timber firm, there is a very good mechanical properties, mechanical, specialty construction and shipbuilding, furniture of precious timber, but also a good material for cutting boards. National-level rare species, protected plants. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Latin name: excetrodendron hsiemvu (chun et how) ht chang et miau Chinese name: clams wood Latin Family Name: tiliaceae Chinese Family: Tiliaceae Protection level: 2 Distribution: Guangxi, Yunnan (Xichou) Status: endangered species. Clams wood is prized limestone mountain of northern tropical species. Due to over-harvesting, shrinking forest area, forest deterioration of the environment, updating difficulties. Altitude limit (meters): General upper bounds up to 900 700 Characteristics: evergreen tree, up to 30 meters, diameter of one meter or more, up to three meters between; bark gray, smooth, gray brown when old, flaking. Leaves thick leathery, elliptic-ovate or broadly ovate, 9 a 18 cm long, 10 cm wide and 8 a, from the base three veins; petiole usually 4 a 5 cm long. Dioecious, dilute with strains cymes, 2, or 3 manifold; usually unisexual flowers, sepals inner surface of the gland; petals usually 5, white; male flowers have stamens 25 a 60,5 beam filaments basally connate, ovary degeneration significant; female flowers staminodes majority, 5 beam filaments basally connate, anthers atrophy no pollen, pistil length 6 mm, 5-lobed stigma, ovary 5 rooms, each room has two ovules. Capsule oval, when the film was divided into five ripe fruit flap, flap has one seed per fruit. Features: The annual average temperature distribution area of 19 - 22 ℃, extreme minimum temperature in winter is generally above 0 ℃, under the influence of strong individual year of strong radiation cooling stratosphere, where there may be a short flat to minus cold; annual precipitation 1200 - about 1500 mm, the distribution is uneven, concentrated in May - 9 months; monthly average relative humidity of not less than 75%. Weak cold clams wood, saplings around -1 ℃ will wither, as well as the dead weight of less chilling -4 ℃ appear. Rock Hill is low and shallow soil cover, for all types of limestone soil, ph value of 6.0 - 7.5. Wood has a deep, wide exhibition of clam hovering in the crevice of the rock surface roots, rock crevices to adapt fertilizer scattered habitat. Saplings 5 - 6 years old before the shade. Over age 10 in the full light to normal growth and development. Moderate growth rate, height, DBH peak growth year after the arrival of late, age 15, 30, respectively, in order, the annual growth of up to 1 m, respectively, at this time, more than 1 cm; in the middle of the site conditions, forest age 45 height of about 25 meters, diameter of 30 cm is not. Adult trees coming later, usually after the age of 25, and the cultivation of isolated trees that bloom for 15 years. Size of firm, the intervals of 2 - 3 years. Usually bloom in March, ripe fruit in early June. One constructive species of clams wood native to northern tropical seasonal rainforest limestone build species varies with site conditions, mainly beef tree cephalomappa sinensis (chun et how) kosterm., Stockwork stone wood drypetes perreticulata gagnep ., Yan Zhang cinnamomum saxatile hwli, Watkins Lee garcinia paucinervis chun et how, yellow pear boniodendron minus (hemsl.) t. chen, glauca cyclobalanopsis glauca (thunb.) oerst. etc.. Protection Value: clams wood tropical limestone endemic plants have scientific value. Kennedy heavy timber, with extremely superior mechanical properties, mechanical, travel, furniture, precious specialty building materials. Protection measures: protected areas have been established in Guangxi Long states, Yasuaki, Longan County, and _set_ the clams wood forest dragon states engaged bucking. Clams lumber around the rest should be properly protected and strictly control the number of logging and promote updates. Cultivation: breeding seed. After cracking scattered fruit ripening seeds, timely harvest. Seeds short life, more than 10 days of germination rate of 95%, ie total loss of more than two months storage germination force should be broadcast with four days later unearthed, should take the shade, keep the soil moist. Year seedlings grow slowly, until next spring, about 10 cm; seedlings a year and a half on average up to 70 cm, can Chupu. Afforestation should be _select_ed in the downhill at the limestone Rock Hill, discretionary leave or scattered shrubs for shade trees.
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Flowers encyclopedia
Wood introduced clams Clams wood (Burretiodendron hisenmu Chun et How) Genus: Tiliaceae Alias: Characteristics: Evergreen tree, up to 30 meters, diameter of one meter or more, up to three meters between; bark gray, smooth, gray brown when old, flaking. Leaves thick leathery, elliptic-ovate or broadly ovate, 9-18 cm wide and 8-10 cm from the base three veins; leaves now usually 4-5 cm long. Dioecious, dilute with strains cymes, 2, or 3 manifold; usually unisexual flowers, sepals inner surface of the gland; petals usually 5, white; male flowers have stamens 25-60,5 beam filaments basally connate, anthers atrophy without pollen and pistil of about 6 mm, 5-lobed stigma, ovary 5 rooms, each room has two ovules. Capsule oval, when the film was divided into five ripe fruit flap, flap has one seed per fruit. Distribution and habits: Southwestern Guangxi low stone mountain peak cluster is its modern distribution center, extending south to southeast Yunnan limestone areas; northward across the Tropic of Cancer by-line to become rare species disappear. Distributed in China region accounts for about latitude 22 ° 05'-24 ° 15 ', longitude 104 ° -108 ° 06'. Multi-born altitude of 700 meters below the pinnacle in the lower part, the upper bound of up to an altitude of 900 Main. Northwest Vietnam also have distribution. Distribution of the annual average temperature 19-22 ℃, extreme minimum temperature in winter is generally above 0 ℃, under the influence of strong individual year of strong radiation cooling stratosphere, where there may be a short flat to minus toward cold; annual precipitation 1200-1500 about mm, uneven distribution, concentrated in the May-September; monthly average relative humidity of not less than 75%. Weak cold clams wood, saplings will be around -1 ℃ dieback, dead weight and even less chilling -4 ℃ appear. Rock Hill is low and shallow soil cover, for all types of limestone soil, pH, 6.0-7.5. Wood has a deep, wide exhibition of clam hovering in the crevice of the rock surface roots, rock crevices to adapt fertilizer scattered habitat. 5-6 years old saplings before shade, age over 10 in full light to normal growth and development. Moderate growth rate, height, diameter growth peak coming in successive years later, aged 15 and 30, respectively, in order, at this time of the year, although growth in the one meter, one centimeter above; in the middle of the site conditions. 45 Age of trees about 25 primary, diameter of 30 cm. Adult trees coming later, usually after the age of 25, and the cultivation of isolated wood that is open for 15 years. Size of firm, the interval of 2-3 years. Usually bloom in March, ripe fruit in early June. One constructive species of clams wood native to northern tropical seasonal rainforest limestone build species varies with the origin of the condition, mainly beef tree Cephalomappasinensis (ChunetHow) Kostem. Stockwork stone wood perreticulataGagnep., Yan Zhang CinnamomumsaxatileH. W.Li, Watkins Lee GarciniapaucinervisChunetHow, yellow pear Boniodendronmiunus (Hemsl.) T.Chen, glauca Cyclobalanopsisglauca (Thunb.) Oert. etc.. Propagation and cultivation: Propagation by seed. After cracking scattered fruit ripening seeds, timely harvest. Seeds short life, more than 10 days of germination rate of 95%, ie total loss of more than two months storage germination force should be broadcast with four days later unearthed, should take the shade, so keep the soil moist. Year seedlings grow slowly, until next spring, about 10 cm; seedlings a year and a half on average up to 70 cm, can Chupu. Afforestation should be made in the limestone mountain downhill, discretionary leave or scattered shrubs for shade trees. Application: Endangered species. Clams wood is of limestone mountain rare species of tropical north, there is scientific value. Kennedy heavy timber, with extremely superior mechanical properties, mechanical, travel, furniture, special building valuable timber. Photo:
