Roupala montana
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Roupala montana is a plant species in the silver tree family from central to northern South America to Central America and southern Mexico .
description
Roupala montana grows as a slow-growing, deciduous tree to over 15 meters high, rarely up to 25 meters, or as a shrub up to 10 meters high. The trunk diameter reaches up to 40-80 centimeters. The more or less thick bark is sometimes corky and brownish to gray, dark gray, it is from relatively smooth to rough to more or less cracked to scaly.
The alternate leaves are dimorphic , the young leaves are pinnate unpaired with roughly serrated, somewhat hairy leaflets or they are simple and lobed to divided. The rachis and the leaflet and leaf stalks are runny. The older leaves are simple, leathery and stalked, bald on top and more or less hairy on the underside. The rutty petiole is 2.2–6.3 inches long. The ovate to obovate or elliptical leaves are 5–11 inches long and 2.5–7 inches wide. The leaf margin is completely or rarely serrated or notched, at the tip the leaves are pointed to pointed, tailed or indented. Different leaf morphs can occur on one branch at the same time.
There are terminal or axillary and more or less rusty hairy, false racemose , cylindrical, up to 8-20 centimeters long, multi-flowered inflorescences. The cream-colored to yellowish, ocher-colored or green-yellow, four-fold, fragrant flowers are in pairs and have short stems with a simple flower cover , the petals are missing. The flowers are underlaid by small bracts . The linear, more or less hairy and free, scalloped 4 sepals with a broader base are up to 1 centimeter long. The almost seated stamens are attached to the sepals in the middle. The more or less hairy ovary is on top, with a long, conical-club-shaped and bald stylus with a scar not quite at the top. There are 4 small, bald and fleshy, free nectar glands.
Small, almost bare and flattened, roughly elliptical, brownish follicles with stylus remains at the tip are formed, which open into two lobes. They are 2.5–4 centimeters tall and contain two winged seeds. The flattened, triangular seeds are with the paper wing all around, elliptical and up to 2–2.5 centimeters long and up to 1 centimeter wide.
Taxonomy
The first description was in 1775 by Jean Baptiste Christophe Fusée Aublet in Hist. Pl. Guiane: 83. There are a lot of synonyms such as B. Roupala brasiliensis Klotzsch known.
There are four varieties:
- Roupala montana var. Montana
- Roupala montana var. Brasiliensis (Klotzsch) KSEdwards
- Roupala montana var. Impressiuscula (Mez) KSEdwards
- Roupala montana var. Paraensis (Sleumer) KSEdwards
use
The wood , pearl wood (Lacewood, Leopardwood, Louro Faia, Faeira, Catucaém) is decorative and quite heavy, hard and quite durable.
literature
- JA Vozzo: Tropical Tree Seed Manual. USDA Forest Service, 2002, p. 693 f, limited preview in Google Book Search.
- Climbiê Ferreira Hall: Flora of the cangas of the Serra dos Carajás, Pará, Brazil: Proteaceae. In: Rodriguesia. 67 (5), 2015, pp. 1463-1465, doi: 10.1590 / 2175-7860201667549 , online at researchgate.net.
- J. Gérard, D. Guibal, S. Paradis, J.-C. Cerre: Tropical Timber Atlas. Éditions Quæ, 2017, ISBN 978-2-7592-2798-3 , pp. 213 ff, limited preview in the Google book search.
Web links
- Roupala montana at NYBG.
- Roupala montana at Smithsonian Tropical Research Institute.
- Roupala montana at Useful Tropical Plants.
- Roupala montana near Árvores do Bioma Cerrado.
Individual evidence
- ↑ Roupala montana at KEW Science.
- ↑ Useful Tropical Plants.