Abies yuanbaoshanensis

Abies yuanbaoshanensis is a species of the genus of fir (Abies ) in the pine family ( Pinaceae ). It comes in the Chinese province of Guangxi endemic. The natural abundance of the species described in 1980 comprises only about 100 copies.

Description

Abes yuanbaoshanensis grows as evergreen tree that can reach the stature heights of up to 25 meters and diameter at breast height of up to 60 centimeters. The dark red-brown bark is torn uneven. The hairless bark of the branches is initially colored yellow or light brown, and after two to three years, the coloring turns into a brownish black.

The very resinous, conical winter buds are colored reddish brown. The easily arranged radially on the branches, straight needles are 1 to 2.7 inches long and 1.8 to 2.5 millimeters wide. At the needle bottom you will find two white Stomatabänder.

The flowering period is in May. Those with a length of 8 to 9 cm and a diameter of 4.5 to 5 centimeters short cylindrical cones are initially green and ripen in October, colored light brown yellow. Those with a length of about 1 centimeter reversed - triangular to elliptical, blistered and resinous seeds are dark reddish brown. The seed wing is approximately twice as long as the seed.

Occurrence

The natural range of Abies yuanbaoshanensis located in the north of China's Guangxi Province; where it occurs on the Yuanbao Shan in the Autonomous District Rongshui. It grows at altitudes 700-2100 m.

System

Abies yuanbaoshanensis is allocated within the genus of fir (Abies ) of section Pseudopicea and the subsection Delavayianae. The first description by YJ Lu and Li Kuo Fu took place in 1980 in The genus Abies Discovered for the first time in Guangxi and Hunan, in Acta Phytotaxonomica Sinica, 18 (2 ), pp. 206-207, Table 1 The type material was YJ Lu collected. A synonym for Abies yuanbaoshanensis YJLu & LKFu Abies fabri is subsp. yuanbaoshanensis ( Y.J.Lu & L.K.Fu ) Silba.

Threats and conservation

Abies yuanbaoshanensis is listed in the IUCN Red List as " critically endangered ". In the natural habitat grow only around 100 trees, of which most are over 100 years old. The main hazard reasons the slow taper and the Samenfrass by squirrels apply. Another risk factor represents the pressure of competition with various types Sinarundinaria

Swell

• Liguo Fu, Nan Li, Thomas S. Elias & Robert R. Mill: Pinaceae in the Flora of China, Volume 4, 1999: Abies yuanbaoshanensis, pp. 49 - Online.