Analysis of information sources in references of the Wikipedia article "Pinus" in Indonesian language version.
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The ratio between two pine needles is 0.618 [...] the angle between the two neighbors is about 135° and the angle between the main stem and each branch is close to 34.4° which is the golden section of 90°
{{cite book}}: Pemeliharaan CS1: Lain-lain (link)The ratio between two pine needles is 0.618 [...] the angle between the two neighbors is about 135° and the angle between the main stem and each branch is close to 34.4° which is the golden section of 90°
{{cite web}}: {{cite book}}: Pemeliharaan CS1: Lain-lain (link)