Chimonobambusa damingshanensis

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Chimonobambusa damingshanensis
Systematics
Order : Sweet grass (Poales)
Family : Sweet grasses (Poaceae)
Subfamily : Bamboo (Bambusoideae)
Tribe : Arundinarieae
Genre : Chimonobambusa
Type : Chimonobambusa damingshanensis
Scientific name
Chimonobambusa damingshanensis
Hsueh & WPZhang

Chimonobambusa damingshanensis is a bamboo species from the genus Chimonobambusa with 1.5 to 2 meter high stalks and 15 to 18 centimeter long blade blades. The range of the species is only in the Guangxi Autonomous Region in China .

description

Chimonobambusa damingshanensis is perennial and forms leptomorphic rhizomes . The woody stalks grow upright, they reach a height of 1.5 to 2 meters and a diameter of 0.6 to 0.8 centimeters. The internodes are round, green to purple-green and 10 to 13 inches long. They are initially finely haired and have a dark brown, felty ring under each knot . The nodes are thickened and hairy downy. The first two nodes near the base of the stalk form aerial roots. One, two or three horizontal side branches are formed per bud, which are about the same thickness and thinner than the stalk. The straw-sheaths are permanent, brown with gray spots and longer than the internodes. They are paper-like and densely wire-haired, and there are no auricles . The ligule is small and ciliate. The leaf blade is linear, 3 to 4 millimeters long and sloping. Four to six leaves are formed per branch. The leaf sheaths are bare, the bristles on the sheath shoulders (oral setae) overflow purple and about 1.1 centimeters long. The ligule is membranous, entire, about 6 millimeters long and not ciliate. The leaf blade is lanceolate, 15 to 18 inches long and 1.1 to 1.3 inches wide and sloping on the ligule. Transverse leaf veins are clearly developed. The leaf base has a short stalk-like connection to the sheath.

The inflorescences consist of only a few spikelets at the base of each inflorescence are several hüllspelzenähnliche bracts . The spikelets are sessile, elliptical, laterally compressed and about 12 millimeters long. They form lateral buds at the base. Four or five fertile florets are formed per spikelet , the florets at the top are reduced and sterile. When ripe, the spikelets break apart on the individual florets. Two permanent and similar glumes are formed per spikelet, which are shorter than the spikelet. The glumes are lanceolate, membranous, keeled and pointed. The lemma of fertile florets is lanceolate or ovate, about 10 millimeters long, 3 to 4 mm wide, paper-like, uncut and five to seven times veined. Both side veins and transverse veins are formed. The palea is 6 to 7 millimeters long. The sterile florets are similar to the fertile ones, but they are not fully developed. Three membranous and ciliate erectile tissue , three stamens , a small stylus with two scars are formed per flower . The fruits are caryopses with a fleshy pericarp .

Young shoots appear from August to September.

Distribution and ecology

The natural range is in China in the Guangxi Autonomous Region . There the species grows on low mountain slopes at an altitude of about 1300 meters.

Systematics and research history

Chimonobambusa damingshanensis is a species from the genus Chimonobambusa , Tribus Arundinarieae , subfamily bamboo (Bambusoideae). The species was of Xue Jiru and Zhang Wei Ping in 1988 in the Journal of Bamboo Research firstdescribed . Synonyms of the species are not known.

Individual evidence

  1. ↑ a b c Zheng-de Zhu, Chris Stapleton: Chimonobambusa damingshanensis In: Flora of China. Volume 22, p. 155.
  2. ↑ a b W. D. Clayton, M. Vorontsova, KT Harman, H. Williamson: Chimonobambusa damingshanensis. In: GrassBase - The Online World Grass Flora. Royal Botanic Gardens, accessed March 1, 2015 .
  3. ↑ Chimonobambusa damingshanensis. In: The International Plant Name Index. Retrieved March 1, 2015 .
  4. ↑ Rafaël Govaerts (ed.): Chimonobambusa damingshanensis. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved March 1, 2015.

literature

  • Wu Zheng-yi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 22: Poaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2006, ISBN 1-930723-50-4 , pp. 155 (English).

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