Pittosporum resiniferum

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Pittosporum resiniferum
Fruits of Pittosporum resiniferum

Fruits of Pittosporum resiniferum

Systematics
Asterids
Euasterids II
Order : Umbelliferae (Apiales)
Family : Sticky seed family (Pittosporaceae)
Genre : Sticky seeds
Type : Pittosporum resiniferum
Scientific name
Pittosporum resiniferum
Hemsl.

Pittosporum Resiniferum is a plant from the genus of pittosporum ( Pittosporum ) within the family of pittosporaceae (Pittosporaceae). It isnativeto the Philippines ; especially in the immediate vicinity of the Mayon volcano, but also occurs in Sabah on Mount Kinabalu . Pittosporum resiniferum grows at altitudes of 600 to 2400 meters, usually in elven or Pinus kesiya forests.

description

Vegetative characteristics

Pittosporum resiniferum grows as a tree and reaches heights of up to 30 meters. In the forests, its habitat, it is likely to remain smaller and possibly also grow epiphytically .

The bark of the branches is bare. The alternate and spirally arranged leaves on the branches are divided into a petiole and a leaf blade. The petiole is 2 to 4 inches long. The leathery, simple, entire leaf blade is 8 to 15 centimeters long and 3.5 to 5.5 centimeters wide in the middle, widest, narrow, obovate or obovate-lanceolate and has a short tip. There is pinnate veins . At first the leaves are very hairy and later bare.

Generative characteristics

The flowers are arranged in clusters on the stem. The fragrant, hermaphrodite flowers are radial symmetry with a double flower envelope . and The sepals are fused at the lower half to form a flat calyx, the free calyx lobes are rounded at the upper end. The white petals are narrow-elongated with a length of 9 to 12 millimeters and a width of 1.5 to 2 millimeters.

Pittosporum resiniferum only bears fruit from a height of 6 to 12 meters. The fruits are an average of 25 (12 to 43) millimeters in diameter and contain an average of 31 (5 to 72) seeds. The seeds, on average 3 millimeters in size, are angular, black to blackish gold and often surrounded by a rubbery or resinous endocarp .

use

It owes its name petroleum nut to its petroleum- like smell. If you light the fruits of Pittosporum resiniferum , including green ones , they burn with a bright flame and can be used as a light source. The contained dihydroterpenes are used for perfumes and medicines. They are equally well suited for producing biofuel . Very pure n-heptane can be obtained from the oil of Pittosporum resiniferum by distillation .

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Individual evidence

  1. ↑ Pittosporum in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved April 27, 2018.
  2. ↑ a b c d e f James A. Duke: Handbook of Nuts: Herbal Reference Library. 2000, Taylor & Francis Inc., ISBN 978-0849336379 , p. 245.
  3. ↑ a b c C. Orwa, A. Mutua, R. Kindt, R. Jamnadass, A. Simons, 2009: Pittosporum resiniferum. In: Agroforestree Database: a tree reference and selection guide , Version 4.0 ( PDF ).
  4. ↑ a b c d e K. Bakker, CGGJ van Steenis: Pittosporaceae. In: Flora Malesiana , Series 1, 5, 1957, pp. 345-362. ( Online )
  5. ↑ Michael Bengwayan : Petroleum Nut: Sustainable, Wonder Biofuel . In: Pine Tree Cordillera Ecological Center . Ideas Connection. First published 2010-Nov 15. Retrieved November 17, 2010.

Web links

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