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- Picea_×_lutzii abstract "Picea × lutzii is a hybrid spruce tree that is a natural cross between white spruce and Sitka spruce occurring where the ranges of the two species overlap in coastal south-central Alaska and coastal British Columbia. Its common name is Lutz spruce. Its morphology is intermediate between the two parent species, the maritime Sitka spruce and the white spruce of dryer climates further inland. In addition to the parent spruces it shares its ecosystem with Tsuga heterophylla and T. mertensiana. The tree was named for Harold John Lutz, a scientist who specialized in forest soils and worked briefly for the United States Forest Service in Alaska where he collected the material used to describe the hybrid. A Lutz spruce from Alaska's Chugach National Forest was selected in 2015 for the Capitol Christmas Tree. This is the first Capitol Tree that has come from the state of Alaska.Lutz's spruce grows as tall as 30 meters in height, and it is a generally symmetrical tree with open and downward bowing branches. While its needles are sharp like the Sitka spruce, they are not as \"stiff\" and, therefore, less \"prickly.\" The seed cones closely resemble those of the Sitka spruce but are smaller and with the rounded tops of white spruce cones.Between 1987 and 2000 the largest known epidemic of spruce bark beetle (Dendroctonus rufipennis) caused the death of 90% of white, Sitka, and hybrid Lutz spruce, almost all of the mature spruce trees, in a 3.2 million acre forest in the Kenai Peninsula and Copper River. The spruce bark beetle is a part of the native ecosystem, mainly hosted by the white spruce of the dryer interior, in south-central Alaska where the tree loss occurred in apparently healthy old growth forest. One theory about the decimation of trees is that warmer spring and summer temperatures have allowed the beetles an annual reproductive cycle, shortened from every two to three years, while warmer winter temperatures have increased the number of beetles that live through winter to reproduce in spring. In addition to increased temperatures, increased aridity in the region has created dryer forests lowering the production of sap, a barrier defense against insect and fungal pests, in the spruces. Lutz spruces, like its primary host, the white spruce, are more susceptiblethan what? to bark beetle damage and suffer a higher mortality rate when infected.".
- Picea_×_lutzii binomialAuthority Elbert_Luther_Little.
- Picea_×_lutzii class Pinophyta.
- Picea_×_lutzii division Pinophyta.
- Picea_×_lutzii family Pinaceae.
- Picea_×_lutzii genus Spruce.
- Picea_×_lutzii kingdom Plant.
- Picea_×_lutzii order Pinales.
- Picea_×_lutzii thumbnail Picea_x_lutzii_Skagway.jpg?width=300.
- Picea_×_lutzii wikiPageID "48674980".
- Picea_×_lutzii wikiPageLength "4443".
- Picea_×_lutzii wikiPageOutDegree "19".
- Picea_×_lutzii wikiPageRevisionID "694526740".
- Picea_×_lutzii wikiPageWikiLink Capitol_Christmas_Tree.
- Picea_×_lutzii wikiPageWikiLink Category:Hybrid_plants.
- Picea_×_lutzii wikiPageWikiLink Category:Picea.
- Picea_×_lutzii wikiPageWikiLink Chugach_National_Forest.
- Picea_×_lutzii wikiPageWikiLink Dendroctonus_rufipennis.
- Picea_×_lutzii wikiPageWikiLink Elbert_Luther_Little.
- Picea_×_lutzii wikiPageWikiLink Harold_John_Lutz.
- Picea_×_lutzii wikiPageWikiLink Picea_glauca.
- Picea_×_lutzii wikiPageWikiLink Picea_sitchensis.
- Picea_×_lutzii wikiPageWikiLink Pinaceae.
- Picea_×_lutzii wikiPageWikiLink Pinales.
- Picea_×_lutzii wikiPageWikiLink Pinophyta.
- Picea_×_lutzii wikiPageWikiLink Plant.
- Picea_×_lutzii wikiPageWikiLink Spruce.
- Picea_×_lutzii wikiPageWikiLink Tsuga_heterophylla.
- Picea_×_lutzii wikiPageWikiLink Tsuga_mertensiana.
- Picea_×_lutzii wikiPageWikiLink United_States_Forest_Service.
- Picea_×_lutzii wikiPageWikiLinkText "Lutz Spruce".
- Picea_×_lutzii wikiPageWikiLinkText "Lutz spruce".
- Picea_×_lutzii wikiPageWikiLinkText "Picea × lutzii".
- Picea_×_lutzii binomial "Picea × lutzii".
- Picea_×_lutzii binomialAuthority Elbert_Luther_Little.
- Picea_×_lutzii classis Pinophyta.
- Picea_×_lutzii divisio Pinophyta.
- Picea_×_lutzii familia Pinaceae.
- Picea_×_lutzii genus "Picea".
- Picea_×_lutzii imageCaption "Picea × lutzii forest, near Skagway, Alaska".
- Picea_×_lutzii name "Lutz spruce".
- Picea_×_lutzii ordo Pinales.
- Picea_×_lutzii regnum "Plantae".
- Picea_×_lutzii species "P. × lutzii".
- Picea_×_lutzii wikiPageUsesTemplate Template:Italic_title.
- Picea_×_lutzii wikiPageUsesTemplate Template:Red.
- Picea_×_lutzii wikiPageUsesTemplate Template:Reflist.
- Picea_×_lutzii wikiPageUsesTemplate Template:Taxobox.
- Picea_×_lutzii subject Category:Hybrid_plants.
- Picea_×_lutzii subject Category:Picea.
- Picea_×_lutzii hypernym Cross.
- Picea_×_lutzii type Conifer.
- Picea_×_lutzii type Eukaryote.
- Picea_×_lutzii type Plant.
- Picea_×_lutzii type Species.
- Picea_×_lutzii type Thing.
- Picea_×_lutzii type Q19088.
- Picea_×_lutzii type Q756.
- Picea_×_lutzii comment "Picea × lutzii is a hybrid spruce tree that is a natural cross between white spruce and Sitka spruce occurring where the ranges of the two species overlap in coastal south-central Alaska and coastal British Columbia. Its common name is Lutz spruce. Its morphology is intermediate between the two parent species, the maritime Sitka spruce and the white spruce of dryer climates further inland. In addition to the parent spruces it shares its ecosystem with Tsuga heterophylla and T. mertensiana.".
- Picea_×_lutzii label "Picea × lutzii".
- Picea_×_lutzii sameAs Q21370376.
- Picea_×_lutzii sameAs Picea_×_lutzii.
- Picea_×_lutzii sameAs Q21370376.
- Picea_×_lutzii wasDerivedFrom Picea_×_lutzii?oldid=694526740.
- Picea_×_lutzii depiction Picea_x_lutzii_Skagway.jpg.
- Picea_×_lutzii isPrimaryTopicOf Picea_×_lutzii.
- Picea_×_lutzii name "Lutz spruce".