| 21. | Among the evergreens, the white fir and most of the pines _ except white pines _ hold up well.
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| 22. | In the huge power crisis that faces the state, lighting 4, 000 bulbs on a white fir looks like carelessness.
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| 23. | In the Sierra, white fir, Douglas fir and incense cedar will revive this summer after years of minimal water supplies.
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| 24. | Species that depend on fire to reproduce such as ponderosa pine declined in population, while Douglas-fir and white fir spread.
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| 25. | A mixed conifer forest, consisting mostly of douglas fir, white fir, and ponderosa pine, is found between elevations of and.
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| 26. | This mistletoe is a parasitic plant on its single known host tree, the white fir ( " Abies concolor " ).
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| 27. | Forests of ponderosa pine blanket the mountainous landscape; white fir, Shasta red fir, Douglas-fir, and incense cedar grow at higher elevations.
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| 28. | The half-mile path climbs rapidly ( about 250 feet in a fifth-mile ) past white firs before arriving at the goal.
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| 29. | The first white fir tree used for the event was harvested from the Mount Shasta region in Northern California in 2010.
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| 30. | Its Christmasy aroma is unbeatable, but you can get close with concolor fir ( also called white fir ) or Fraser fir.
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