Aphanocalyx heitzii
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| ( Pellegr. ) Wieringa |
Aphanocalyx heitzii is a large tree in the legume family in the carob subfamily. It occurs in Cameroon , Gabon and Equatorial Guinea in Central Africa .
description
Aphanocalyx heitzii grows as a mostly evergreen tree with a rounded crown up to 45 meters high. The trunk diameter reaches 180-200 centimeters. Thick and meter high buttress roots are formed. The relatively smooth bark is gray to red-brown with lenticels in rows and it is rough and scaly with age.
The alternate and helically arranged, short-stalked leaves are pinnate in pairs, with 40–64 leaflets . The short petiole is 0.5–1 inches long. The rachis is up to about 15-28 inches long and, like the petiole, somewhat hairy. The seated, slightly leathery to papery and elongated, slightly rhombic or eilanzettlichen leaflets are almost glabrous and about 1.5–5 centimeters long and 3–9 millimeters wide. The largest leaflets are roughly in the middle of the leaves. They have entire margins, are trimmed at the uneven base and one-sided at the tip, rounded at an angle to the front and round-pointed. The nerve is "palmate" and diagonally backwards, with the front half of the leaflet almost completely missing and a vein forming the leaf margin. There are often glands on the leaflets. The stipules are fused and fall off early. The first two leaves on young plants are opposite.
Axillary and compound, racemose , briefly brownish, velvety hairy, multi-flowered, brownish-green inflorescences are formed. There are sloping bracts . The fragrant, stalked, five-fold flowers with a double perimeter are hermaphroditic or male. The flower stalk is long-velvety, yellow-silvery hairy and up to about 1–1.5 centimeters long. There are two thick, long-velvety, yellow-silvery hairy, flabby and thick, egg-shaped, reddish to reddish brown bracts . The 5 reddish, ciliate sepals are hairy silky-shaggy inside, 2 are fused. The yellowish petals are unequal, one is large, about 1–1.5 centimeters long and inside, with silky shaggy hair in the lower part, and rolled up, nailed , with an edged to rounded plate , the other 4 are shaggy, elongated and small. There are 9 fused stamens in the lower part . The pedunculated, unilocular and whitish, villous hairy ovary is constantly above the top and side of the flower cups , with a basal long-haired, a terminal to some pendent stylus , with smaller, capitate, and heart-shaped scar . The male flowers have a somewhat reduced pistillode.
Flat, pointed and woody, brownish legumes with a conspicuous, lateral longitudinal vein are formed. They are about 10-19 inches long, 3.5-5.5 inches wide and contain up to 6 seeds . The lenticular, dark brown and shiny seeds with a thin seed coat are 1.5-2.5 centimeters in size.
Taxonomy
The first description of the Basionyms Monopetalanthus heitzii took place in 1937 (Publ. 1938) in Bull. Soc. Bot. France 84: 642. The division into the genus Aphanocalyx took place in 1999 by Jan Johannes Wieringa in Wageningen Agric. Univ. Pap. 99 (4): 179.
use
The medium-weight wood is used for various applications. It is known as Andoung (Rouge, de Heitz), Andjung , Ekop, or N'Douma .
literature
- Quentin Meunier, Carl Moumbogou, Jean-Louis Doucet: Les arbres utiles du Gabon. Presses Agronomiques de Gembloux, 2015, ISBN 978-2-87016-134-0 , p. 138 f, limited preview in the Google book search.
- JJ Wieringa: Monopetalanthus exit .: a systematic study of Aphanocalyx, Bikinia, Icuria, Michelsonia and Tetraberlinia (Leguminosae, Casalpinioideae. Dissertation, Wageningen Univ., Wageningen Agriculture Papers 99 (4), 1999, ISBN 90-5808-121-4 , Pp. 1–50, 114 f, 175, 179–183, online (PDF; 30 MB).
- J. Gérard, D. Guibal, S. Paradis, J.-C. Cerre: Tropical Timber Atlas. Éditions Quæ, 2017, ISBN 978-2-7592-2798-3 , p. 99 ff, limited preview in the Google book search.
Web links
- Aphanocalyx heitzii at PROTA.
Individual evidence
- ↑ online at tandfonline.com, doi: 10.1080 / 00378941.1937.10837435 .