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Black Oak, Tree

The Trunk
(1 of 8) (9560 views)

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The trunk of this California Black Oak showed the classic hitch hikers of moss and lichen. The wood is a deciduous hardwood that has not been widely cultivated for commercial use.


California Black Oak (Quercus kelloggii)   •  Tilden Park Botanic Gardens   •  Berkeley, California   •  (Photo posted Monday 12 July 2010)   •  (Photo taken 12:55:26 Tuesday 18 May 2010)   •  © 2010 Bryan Costales Creative Commons Attribution-NonCommercial License #125526_4829BCX
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Branches
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The way its trunk branches is similar to the way a shrub branches. In fact, in Shasta and Trinity Counties California Black Oak has taken a shrub form. external link


California Black Oak (Quercus kelloggii)   •  Tilden Park Botanic Gardens   •  Berkeley, California   •  (Photo posted Monday 12 July 2010)   •  (Photo taken 12:55:32 Tuesday 18 May 2010)   •  © 2010 Bryan Costales Creative Commons Attribution-NonCommercial License #125532_4830BCX
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Upper Branches
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The upper branches of the California Black Oak are long and straight. Although once made to grow into special forms for ship construction, that practice is now rare.


California Black Oak (Quercus kelloggii)   •  Tilden Park Botanic Gardens   •  Berkeley, California   •  (Photo posted Monday 12 July 2010)   •  (Photo taken 12:55:42 Tuesday 18 May 2010)   •  © 2010 Bryan Costales Creative Commons Attribution-NonCommercial License #125542_4831BCX
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New Leaves
(4 of 8) (6095 views)

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Here was a cluster of new leaves sprouting in the springtime. Its leaves turn yellow to red in the fall.


California Black Oak (Quercus kelloggii)   •  Tilden Park Botanic Gardens   •  Berkeley, California   •  (Photo posted Monday 12 July 2010)   •  (Photo taken 12:55:50 Tuesday 18 May 2010)   •  © 2010 Bryan Costales Creative Commons Attribution-NonCommercial License #125550_4823BCX
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Large Tree
(5 of 8) (5829 views)

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The California Black Oak can grow to over 100 feet (30 meters) in height and can live for up to 500 years.


California Black Oak (Quercus kelloggii)   •  Tilden Park Botanic Gardens   •  Berkeley, California   •  (Photo posted Monday 12 July 2010)   •  (Photo taken 12:56:12 Tuesday 18 May 2010)   •  © 2010 Bryan Costales Creative Commons Attribution-NonCommercial License #125612_4833BCX
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The Leaf
(6 of 8) (6111 views)

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Here is the classic lobed leaf of the oak tree.


California Black Oak (Quercus kelloggii)   •  Tilden Park Botanic Gardens   •  Berkeley, California   •  (Photo posted Monday 12 July 2010)   •  (Photo taken 12:56:26 Tuesday 18 May 2010)   •  © 2010 Bryan Costales Creative Commons Attribution-NonCommercial License #125626_4834BCX
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Leaf Colors
(7 of 8) (6069 views)

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The California Black Oak is an Evergreen (deciduous) tree whose leaves will change color in the autumn but will not fall off. Here we see autumn colors appearing in new growth.


California Black Oak (Quercus kelloggii)   •  Tilden Park Botanic Gardens   •  Berkeley, California   •  (Photo posted Monday 12 July 2010)   •  (Photo taken 12:56:26 Tuesday 18 May 2010)   •  © 2010 Bryan Costales Creative Commons Attribution-NonCommercial License #125646_4835BCX
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Moss and Lichen
(8 of 8) (6115 views)

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Identifying lichens and mosses can be difficult. The lichen here appeared to be Physcia stellaris external link. But the moss was unidentified.


California Black Oak (Quercus kelloggii)   •  Tilden Park Botanic Gardens   •  Berkeley, California   •  (Photo posted Monday 12 July 2010)   •  (Photo taken 12:56:56 Tuesday 18 May 2010)   •  © 2010 Bryan Costales Creative Commons Attribution-NonCommercial License #125656_4837BCX
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