Qualea rosea
| Qualea rosea | ||||||||||||
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| Qualea rosea | ||||||||||||
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Qualea rosea is a tree in the Vochysiaceae family from northern Brazil , Suriname, and French Guiana .
description
Qualea rosea grows as a tree to about 45 meters high. The relatively smooth, grayish to brownish bark is slightly cracked to finely scaly.
The simple, leathery and bare leaves are opposite and have short stalks. They are entire, egg-shaped to elliptical and pointed or pointed to pointed. The base is rounded to blunt. The leaves are about 7-11 centimeters long and the short petiole 7-15 millimeters. The veins are very finely pinnate and the central vein is minimally winged underneath. Small stipules are present, sometimes transformed into glands, or they are developed and accompanied by extra-floral nectaries .
Little-flowered, terminal or axillary and paniculate inflorescences are formed. The stalked flowers with a double perimeter are fragrant. The briefly overgrown calyx is unevenly five-lobed, the largest lobe is spurred and silky hairy on the outside and bald and pink on the inside. The smaller four lobes are fluffy. It is a large, white-yellow (or according to another source; white, with a red, yellow base) and inverted-heart-shaped petal and only one stamen is present. There are still 2 staminodes and 2 small, greatly reduced petals. The draft tube, hairy ovary is upper constant, the stylus is hairy at the base.
There are many-seeded, loculicidal and glabrous, dark brown, ellipsoidal capsule fruits with a woody, thick exo- and thinner, woody and smooth endocarp . They are up to 9 centimeters tall and the seeds are winged on one side. The seeds are hairy and the wing is formed from the seed hairs.
Taxonomy
The first description was in 1775 by Jean Baptiste Christophe Fusée Aublet in Hist. Pl. Guiane 1: 5. Synonyms are Qualea melinonii P.Beckm. and Qualea violacea Mart. & Zucc. ex Schult.
use
The medium-heavy, moderately resistant and hard wood is used for some applications. It is known as Mandioqueira or (Mountain) Gronfo (e) loe , Gonfolo (Rose) .
literature
- FA Stafleu : A Monograph of the Vochysiaceae III. Qualea. In: Acta Botanica Neerlandica. 2 (2), 1953, doi: 10.1111 / j.1438-8677.1953.tb00271.x , online (PDF; 8.8 MB), at Natuurtijdschriften.nl.
- K. Kubitzki : The Families and Genera of Vascular Plants. Vol. IX: Flowering Plants Eudicots , Springer, 2007, ISBN 3-540-32214-0 , pp. 481-485.
- Franklin R. Longwood: Commercial Timbers of the Caribbean. Agriculture Handbook 207, USDA, 1962, p. 60 f, limited preview in the Google book search.
- J. Gérard, D. Guibal, S. Paradis, J.-C. Cerre: Tropical Timber Atlas. Éditions Quæ, 2017, ISBN 978-2-7592-2798-3 , pp. 555 ff, limited preview in Google Book Search.
Web links
- Gonfolo (PDF), Essences forestières de Guyane valorisables en bois de charpente, Fiche n ° 5, at ONF - Office national des forêts.