Scleronema micranthum
| Scleronema micranthum | ||||||||||||
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| Scleronema micranthum | ||||||||||||
| ( Duck ) duck |
Scleronema micranthum is a tree in the mallow family from northern Brazil , Venezuela , Colombia, and Peru .
description
Scleronema micranthum grows as a tree up to 35 meters high. The trunk diameter reaches up to 60 centimeters.
The simple, leathery leaves have short stems. The brownish hairy petiole is 2–4 inches long. They are entire, ovate to obovate or elliptical and about 6-14 centimeters long and rounded to pointed, acuminate. The leaves are glabrous and shiny on top and hairy on the underside, especially on the veins. The nerve is (almost) threefold. There are stipules present.
The flowers appear singly or in small clusters in the leaf axils. The small, stalked flowers have a double flower envelope . The small, cup-shaped calyx is three-sided and brownish on the outside and whitish hairy on the inside. The spreading, about 1 centimeter long, elongated, slightly ciliated 5 petals are white-yellowish. The 20–25 white-yellowish stamens are fused together in the lower part. The multi-chambered, hairy ovary is on top with a long stylus with two very short branches.
Roundish and five-part, non-opening, initially brownish hairy, about 5–8 centimeters in size, slightly ribbed and bumpy, as well as short-pointed, thick-skinned, porous-stiff leather capsule fruits are formed. They often contain only one and more rarely up to three seeds.
Taxonomy
The first description of Basionyms Catostemma micranthum was made in 1930 by Adolpho Ducke in Arch. Jard. Bot. Rio de Janeiro 5: 164. The division into the genus Scleronema took place in 1937 also by Adolpho Ducke in Trop. Woods 50:37.
use
The medium-weight wood is not durable, it is known as cardeiro .
literature
- Gerleni Lopes Esteves: Flora da Reserva Ducke, Amazonas, Brasil: Bombacaceae. In: Rodriguésia. Vol. 56, No. 86, Flora da Reserva Ducke, Amazonas, Brasil (2005), pp. 115-124, JSTOR 23497641 .
- J. Gérard, D. Guibal, S. Paradis, J.-C. Cerre: Tropical Timber Atlas. Éditions Quæ, 2017, ISBN 978-2-7592-2798-3 , 204 ff, limited preview in Google Book Search.