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Sign: The Hebrew University of Jerusalem - Discovery Tree Walk - Black Locust


Address:
Derech Balfour, Jerusalem, Israel
Category:
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On the sign:
21
רובייניה בת-השיטה
Robinia pseudoacacia


תפוצה טבעית: דרום-מזרח ארה"ב

צברי פרחים לבנים וריחניים תלויים על הענפים באפריל ובמאי. צורת הפרחים דמויי פרחי אפונים ותרמילי הזרעים המופיעים בסתיו, מרמזים על השתייכות העץ למשפחת הקטניות שבה גם שעועית, אפונה ועצים מס. 9 (חרוב) Click for sign's details ו- 12 (צ"ל 22) (כליל החורש) Click for sign's details

[הפאה השנייה של הקוביה]
[The second face of the cube]
21
Black Locust
(False Acacia)
Robinia pseudoacacia


Natural range: S.E. USA

Dense clusters of white, fragrant, pea-like flowers hang from these branches in April and May. The shapes of these flowers and of the autumn seed pods show that these trees belong to the legume family, together with peas, beans, and trees 9 (carob) Click for sign's details and 22 (redbud) Click for sign's details.

[הפאה השלישית של הקוביה]
[The third face of the cube]
[שאלה]
קבוצה זו של עצים נוטה מאד לצד אחד. האם גם לעצים אחרים יש נטיה לכוון מסוים? אם כן, האם לאותו כיוון? מה הסיבה?

[a question]
These black locusts lean heavily to one side. Do any other campus trees lean? In the same direction? What might cause this?

[הפאה הרביעית של הקוביה]
[The fourth face of the cube]
[התשובה לשאלה]
מהדשא או הרחבה הקרובה תוכל לראות מספר עצים נטויים לכיוון מזרח (כמו עץ זה). רוחות קיץ מערביות הסיטו את העצים. רוחות גם עוזרות לעצים בפיזור האבקה ו/או הזרעים.

[The Answer to the question]
From the adjacent lawn or nearby pavement, yau can see several trees that lean, all towards the east, like this tree. Summer afternoon winds from the west have bent these trees from their upright positions. But winds also help many types of trees, dispersing their pollen and/or their seeds.
Photography:
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Comments:
Tree No. 21 in the Mac and Tibby Podel Discovery Tree Walk, located on the Edmond J. Safra Campus of the Hebrew University of Givat Ram.

Each tree is accompanied by a cube with details on the tree. On the top of which is the text:
Mac and Tibby Podel Discovery Tree Walk Click for a larger image

In the next picture taken from one of the trees on the route, you can see the way the sign is placed (a cube standing on a metal pillar) and the tree to which it points Click for a larger image

The tree to which the cube points was photographed that day Click for a larger image

The rest of the cube faces:
The second face Click for a larger image
The third face Click for a larger image
The fourth face Click for a larger image


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