Difference between revisions of "Tsuga diversifolia"

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|common_name=North Japanese hemlock
 
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'''''Tsuga diversifolia''''', commonly known as the '''Northern Japanese Hemlock''', is a species of [[conifer]] native to the [[Japan]]ese islands of [[Honshū]], [[Kyūshū]], and [[Shikoku]]. In [[Europe]] and [[North America]], the species is sometimes employed as tree for the garden and has been in cultivation since 1861.
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''T. diversifolia'' is an evergreen tree that attains heights of 25 m (80 feet). The crown is narrow, dense and conical. Young shoots are short, palely pubescent and bright orange to red-brown in colour. The densely arranged needles are linear-oblong and 5 to 15&nbsp;mm long and up to 2.4&nbsp;mm wide. They are a dark green in colour, glossy and furrowed above with two chalk white [[stomata]]l bands below.<ref name="ORSU">{{cite web
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  | last =Breen
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   | first =Patrick
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   | title = Tsuga diversifolia
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| lifespan =     <!--- perennial, annual, etc -->
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  | work =Landscape Plants: Images, Identification, and Information
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| exposure = ?   <!--- full sun, part-sun, semi-shade, shade, indoors, bright filtered (you may list more than 1) -->
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  | publisher = Oregon State University
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   | date =1999-2007
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  | url =http://oregonstate.edu/dept/ldplants/tsdi.htm
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  | accessdate = 2007-05-12 }}</ref>
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The [[bark]] is an orange-brown in colour, shallowly fissured and vertically peeling. The [[bud]]s are a deep purple red. The dull purple, ovoid pistillate flowers are terminal on either long or short shoots. They measure about 5&nbsp;mm and as they mature become pale green with the centre and margin of each scale being purple. The [[conifer cone|cone]]s are 1.8 to 2.8&nbsp;cm long, cylindric-ovoid, and nearly sessile. They are dark brown, pendulous and the scales are slightly convex and ridged. <ref name="Mitchell">{{cite book
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   | authorlink =Alan Mitchell
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  | title =Trees of Britain & Northern Europe
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  | publisher =Harper Collins Publishers
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  | date =1974
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  | location =London
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  | pages = 146
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| cultivar =     <!--- If this is a page for a Variety/Cultivar, usually comes after "var." or is in 'single quotes' -->
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  | id =ISBN 0-00-219213-6  }}</ref>  
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Tsuga diversifolia, Mast. (Abies diversifolia, Maxim. T. Sieboldii nana, Carr.). Tree, very similar to the preceding, but smaller and chiefly distinguished by the reddish brown pubescent branches: lvs. linear, emarginate or obtuse, shorter and narrower, broadest at the middle or toward the base: cone smaller, 1/2 – 3/4 in. long: peduncle not exceeding the bud-scales; bracts truncate, crenulate, not or slightly bifid. Japan.
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Tsuga diversifolia, Mast. (Abies diversifolia, Maxim. T. Sieboldii nana, Carr.). Fig. 3859. Tree, very similar to the preceding, but smaller and chiefly distinguished by the reddish brown pubescent branches: lvs. linear, emarginate or obtuse, shorter and narrower, broadest at the middle or toward the base: cone smaller, 1/2 – 3/4 in. long: peduncle not exceeding the bud-scales; bracts truncate, crenulate, not or slightly bifid. Japan. G.F. 6:495; 10:493 (adapted in Fig. 3859). S.I.F. 2:4.
 
 
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Latest revision as of 15:47, 4 May 2010


Tsuga-diversifolia.JPG


Plant Characteristics
Habit   tree

Height: ⇕ 50 ft"ft" can not be assigned to a declared number type with value 50.
Width: ⇔ 25 ft"ft" can not be assigned to a declared number type with value 25.
Cultivation
Exposure: ☼ sun
USDA Zones: 5 to 8
Scientific Names

Pinaceae >

Tsuga >

diversifolia >


Tsuga diversifolia, commonly known as the Northern Japanese Hemlock, is a species of conifer native to the Japanese islands of Honshū, Kyūshū, and Shikoku. In Europe and North America, the species is sometimes employed as tree for the garden and has been in cultivation since 1861.

T. diversifolia is an evergreen tree that attains heights of 25 m (80 feet). The crown is narrow, dense and conical. Young shoots are short, palely pubescent and bright orange to red-brown in colour. The densely arranged needles are linear-oblong and 5 to 15 mm long and up to 2.4 mm wide. They are a dark green in colour, glossy and furrowed above with two chalk white stomatal bands below.[1]

The bark is an orange-brown in colour, shallowly fissured and vertically peeling. The buds are a deep purple red. The dull purple, ovoid pistillate flowers are terminal on either long or short shoots. They measure about 5 mm and as they mature become pale green with the centre and margin of each scale being purple. The cones are 1.8 to 2.8 cm long, cylindric-ovoid, and nearly sessile. They are dark brown, pendulous and the scales are slightly convex and ridged. [2]


Read about Tsuga diversifolia in the Standard Cyclopedia of Horticulture 

Tsuga diversifolia, Mast. (Abies diversifolia, Maxim. T. Sieboldii nana, Carr.). Tree, very similar to the preceding, but smaller and chiefly distinguished by the reddish brown pubescent branches: lvs. linear, emarginate or obtuse, shorter and narrower, broadest at the middle or toward the base: cone smaller, 1/2 – 3/4 in. long: peduncle not exceeding the bud-scales; bracts truncate, crenulate, not or slightly bifid. Japan. CH


The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.


Cultivation

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Species

Gallery

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References

External links


  1. ↑ Breen, Patrick (1999-2007). "Tsuga diversifolia". Landscape Plants: Images, Identification, and Information. Oregon State University. Retrieved on 2007-05-12.
  2. ↑ Mitchell, Alan (1974). Trees of Britain & Northern Europe. London: Harper Collins Publishers. pp. 146. ISBN 0-00-219213-6. 
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