Licania rigida
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Licania rigida |
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Licania rigida or the oiticica tree is a tree in the golden plum family from eastern Brazil .
description
Licania rigida grows as an evergreen , often multi-stemmed tree, with a spreading, dense crown about 8-15 meters high. The trunk diameter reaches 60–90 centimeters. The bark , flaking off in scales, is grayish to brown.
The simple, short-stalked and alternate leaves are leathery and stiff as well as glabrous and shiny on the top. The short petiole is 5–8 millimeters long and has two glands. The leaves have entire margins, usually rounded at the tip, rarely pointed or indented, edged and obovate to elliptical, elongated, less often ovoid, and about 6-15 inches long and 3-6.5 inches wide. The leaves are hairy and pale green on the underside, the veins are pinnate and lighter. The small stipules are sloping.
Finely hairy and axillary or terminal panicle inflorescences are formed at the branch ends. The flowers are arranged on the stiff, spreading side axes, racemose , in small, very short-stalked, zymous groups. There are bracts and bracts hairy on the outside . The almost sessile to short stalked, hermaphrodite and yellowish, very small flowers are five-fold with a double flower envelope . The small calyx tips and petals are fine-haired. There are about 10-14, slightly hairy and short, slightly protruding stamens that are fused in the lower part, as well as some minimal staminodes (teeth). The hairy, unilocular ovary is medium constantly cup-shaped and finely haired, yellow flower cups , with a hairy pen .
The smooth, narrow-egg-shaped to ellipsoidal, spindle-shaped, rarely round, green drupes are about 3–7 centimeters long. The elongated, ellipsoidal, initially greenish stone core has a thin, fibrous and brittle shell. It contains large, wrinkled cotyledons and a long, linear embryo that lacks endosperm .
Taxonomy
It was first described in 1840 by George Bentham in Journal of Botany (Hooker) 2: 220.
use
Oiticica oil is obtained from the seeds . The fruits are harvested unripe because then the oil content of the seeds is slightly higher.
The stiff blades can be used for polishing.
The rather heavy wood is not particularly valuable and is only used for various, coarser applications.
literature
- Harri Lorenzi: Árvores Brasileiras. Vol. 3, Instituto Plantarum, 2009, 2011, ISBN 85-86714-33-7 , p. 83, online at StuDocu.
- James A. Duke: Handbook of Nuts. CRC Press, 1989, 2001, ISBN 0-8493-3637-6 , p. 204 ff.
Web links
- Oiticia near Projeto Verde - Conheça e plante árvores (pictures).
- Oiticica at Natureza Bela (with pictures).
- Licania at World Flora Online.
Individual evidence
- ↑ Fábio Oliveira Diniz et al .: Biometria e morfologia da semente e plântula de oiticica. In: Revista Verde (Pombal - PB - Brasil). Vol. 10, No. 2, 2015, pp. 183-187, doi: 10.18378 / rvads.v10i2.2965 .
- ↑ archive.org .
- ^ AKV Guimarães, AA Jesus, HNM Oliveira et al .: Biodiesel from Oiticica Oil (Licania rigida, Benth): Production, Thermogravimetric and Oxidative Stability Studies. In: Brazilian Journal of Petroleum and Gas. 12, 2018, pp. 107–122, doi: 10.5419 / bjpg2018-0011 .