Altingia poilanei
| Altingia poilanei | ||||||||||||
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| Altingia poilanei | ||||||||||||
| Tardieu |
Altingia poilanei is a small evergreen deciduous tree species from the family of Altingiaceae within the order of saxifrage-like (Saxifragales). It is endemic to the north of Vietnam .
description
Vegetative characteristics
The tree reaches a height of 10 to 11 m and has a pyramidal crown. The young twigs are lightly downy, have dark gray bark and are covered with protruding lenticels . The helically arranged foliage leaves have a short, thick, 0.2–1 cm long, guttural, bare petiole with two large lenticels at the base. The simple and undivided, pinnate leaf blade is ovate, broadly elliptical to rounded and has a length of 6 to 8 cm and a width of 4 to 5 cm. It has a rounded base and is briefly pointed at the front. The blade is leathery and bare. The 7–9 pairs of lateral nerves form an angle of approximately 45 degrees with the midrib. The leaf veins are sunk on the upper side of the leaf, protrude on the underside and are branched out towards the edge. The spreading margin is finely serrated along its entire length, with crooked teeth bearing a blackish gland.
Generative characteristics
Nothing is known about the structure of the inflorescences and flowers .
The terminally standing, about 20–31.5 mm long stalked, approximately spherical to elongated, woody fruit stands are 21.9–31 mm long and 21.5–27 mm wide. They contain 21–32 individual fruits . These are double, lignified capsule fruits with whitish hairs at the tip , which are surrounded by the enlarged and hardened disc lobes and open with two two-part flaps. The pen are no longer present in the fruit. The seeds are flattened and wingless and have a short beak at the tip. They are 7-10.5 mm long and 3.2-4.5 mm wide.
distribution
Altingia poilanei is only known from the north of Vietnam from the province of Lào Cai .
Taxonomy and systematics
The species was only described in 1965 by the French botanist Marie-Laure Tardieu-Blot on the basis of a collection by the plant collector Eugène Poilane . The type locality is "Ta Phing" near Sa Pa ("Chapa").
A molecular biological study on the basis of five sections of the chloroplast - DNA has Altingia poilanei as part of a not resolvable clade shown ( "Indochina clade"). This clade also contained plants of Altingia yunnanensis and those that could only be assigned to Altingia chinensis with uncertainty , all collected in the vicinity of the type locality of Altingia poilanei . According to R. Govaerts, it is therefore best to classify the species as Liquidambar poilanei (Tardieu) Ickert-Bond & J.Wen as Liquidambar .
etymology
The species was named in honor of the French plant collector Eugène Poilane, from whom the type collection comes. The genus Altingia is named in honor of Willem Arnold Alting (1724-1800), the governor-general of the Dutch East Indies at the time when the first descriptor Francisco Noroña visited Java .
swell
- Tardieu blot M.-L. 1965: Hamamelidaceae. In: Flore du Cambodge, du Laos et du Vietnam. Fasc. 4. Muséum National d'Histoire Naturelle, Paris, pp. 75-116.
Individual evidence
- ↑ a b Ickert-Bond SM, Pigg KB, Wen J. 2007: Comparative infructescence morphology in Altingia (Altingiaceae) and discordance between morphological and molecular phylogenies. American Journal of Botany 94: 1094-1115. - doi : 10.3732 / ajb.94.7.1094
- ↑ Tardieu blot M.-L. 1965 , p. 95.
- ^ Holotype from Altingia poilanei. In: Bases de données de collections SONNERAT. Muséum National d'Histoire Naturelle, Paris, accessed October 19, 2012 .
- ↑ Ickert-Bond SM, Wen J. 2006: Phylogeny and biogeography of Altingiaceae: Evidence from combined analysis of five non-coding chloroplast regions. Molecular Phylogenetics and Evolution 39: 512-528. - doi : 10.1016 / j.ympev.2005.12.003
- ↑ Rafaël Govaerts (Ed.): Liquidambar - World Checklist of Selected Plant Families of the Royal Botanic Gardens, Kew. Last accessed on September 15, 2018.
- ↑ Hayne FG 1830: Faithful representation and description of the plants used in medicine. Vol. 11. Berlin. - Preview in Google Book Search
