Filipino rosewood

Filipino rosewood
Systematics
	Nuclear eudicotyledons
	Asterids
Order :	Heather-like (Ericales)
Family :	Potted fruit trees (Lecythidaceae)
Genre :	Petersianthus
Type :	Filipino rosewood
Scientific name
	Petersianthus quadrialatus
	(Merr.) Merr.

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The Philippine Rosewood also Toog ( Petersianthus quadrialatus is one of two) species of the genus Petersianthus from the family of lecythidaceae . It occurs on the central and southern islands of the Philippines . The largest known specimen has a height of about 96.6 m, making it one of the five largest trees in the world.

It is a very large tree that reaches average heights of 35–45 m, but is also much taller. The trunk diameter is 1–2 m, but can also be well over 3 m. Butt roots meter high can be formed.

The pointed to pointed, also pointed or rounded leaves are leathery and eilanzettlich, obverse-eilanzettlich to elliptical with a finely notched, serrated edge. The nerve is alternately pinnate, the leaf base is sloping. The large leaves are arranged in a spiral and are about 10-25 cm long and 5-12 cm wide, but can be up to 40 cm long.

Terminal or axillary umbrella panicles or panicles up to 15 cm long are formed. The white, short-stalked flowers are four-fold. The obconical flower base is fused with the four linear-lanceolate sepals. The small petals are rounded.

There are many filamentous and curved, basal, tubular fused stamens, some are sterile. The ovary below has a very long, curved and protruding style with a heady stigma. There is a nectar discus .

The one to four-seeded, 2-3 cm long, light orange fruits have four papery wings, the brownish, flattened seeds are ovate to elliptical and 5-7 x 4-5 mm in size.

The wood, known as Filipino rosewood, is hard and difficult to cut.

literature

Ghillean T. Prance, Carel CH Jongkind: A revision of African Lecythidaceae. In: KEW Bulletin 70 (6), 2015, doi : 10.1007 / S12225-014-9547-4 , online (PDF; 15.7 MB), at EEB Greenhouse - University of Connecticut, accessed on February 21, 2018.

Web links

Petersianthus quadrialatus from Phytoimages, accessed February 21, 2018.

Individual evidence

↑ Petersianthus quadrialatus on theplantlist.org, ver. 1.1.
↑ Rafaël Govaerts (ed.): Petersianthus quadrialatus. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved September 28, 2017.
↑ Tallest trees of the world on wondermondo.com, accessed on February 21, 2018.
↑ Dayan et al .: Recommends Volume 15b - Indigenous forest tree species in Laguna. 2007, online (PDF; 2 MB).
↑ Petersianthus quadrialatus in Flora Malesiana, accessed on February 21, 2018.

[1] Petersianthus quadrialatus on theplantlist.org, ver. 1.1.

[WCSP-2] Rafaël Govaerts (ed.): Petersianthus quadrialatus. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved September 28, 2017.

[3] Tallest trees of the world on wondermondo.com, accessed on February 21, 2018.

[4] Dayan et al .: Recommends Volume 15b - Indigenous forest tree species in Laguna. 2007, online (PDF; 2 MB).

[5] Petersianthus quadrialatus in Flora Malesiana, accessed on February 21, 2018.