Chimonobambusa communis

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

Chimonobambusa communis is a type of bamboo from the genus Chimonobambusa with 3 to 7 meter high stalks and mostly 8 to 12 centimeter long blade blades. The range of the species is in China .

description

Chimonobambusa communis is persistent and forms leptomorphic rhizomes . The woody stalks reach a height of 3 to 7 meters and a diameter of 1 to 3 centimeters. The internodes are hollow, from 8, usually 15 to 18, rarely up to 25 centimeters long, petiolate or square in cross-section, smooth and hairless. The wall thickness is between 3 and 5 millimeters. The nodes are not thickened, only in some nodes without side branches the vaginal scar below the node is increased. The nodes are hairless and have no aerial roots . For each bud, three horizontal side branches are formed, which are about the same thickness and thinner than the stalk. The sheaths are initially green, later yellowish brown, hairless and paper-like. Auricles are missing. The ligule is about a millimeter long and entire. The stalk leaf blade is triangular or sub-sub and 5 to 11 millimeters long. It is hairless and soon falls off. Usually two to three leaves are formed per branch. The leaf sheaths are 2 to 4 centimeters long, glabrous and leathery, and there are no ears. Several 3 to 7 millimeter long bristles (oral setae) are formed at the end of the vagina. The ligule is one millimeter long, truncated and not ciliate. The leaf blade is lanceolate, from 5, usually 8 to 12 centimeters, long and from 0.8, usually 1.3 to 2 centimeters, wide. The leaf base is wedge-shaped and has a short stem-like connection to the sheath. Eight to ten pairs of lateral nerves are formed per leaf. Transverse leaf veins are clearly developed. Both sides of the spider are hairy.

The inflorescences grow on leafless branches. They form clusters of two to four individual spikelets ( spikelets with lateral buds that can form further spikelets), which are arranged in loose bundles with several 15 to 25 millimeter long bracts at the base . The spikelets are linear and laterally compressed. They are 2 to 3 inches long and 4 to 5 millimeters wide. They have a 3 to 10 millimeter long stem and seldom carry only three, usually five to seven fertile florets and another, reduced floret on top. The spikelet axis consists of 3 to 5 millimeters long, slightly white powdery internodes. Usually one or two, rarely three, 7 to 13 millimeter long glumes are formed. The lemma is oblong, 8 to 13 millimeters long, keeled, pointed and seven to nine-veined. The palea is 7 to 11 millimeters long, blunt or it has a two-part tip. Three membranous and ciliate cavernous bodies are formed per flower . The three stamens are 5 to 6.5 millimeters long and yellow. The ovary is ovoid, the single pen bears two scars . The fruits are nutty caryopses with a fleshy pericarp .

New shoots appear in May, the species blooms in March, and the fruits ripen in May.

Distribution and ecology

The natural range is in China in the provinces of Guizhou , Hubei and Sichuan . There the species grows on hills at altitudes of 1600 to 2000 meters.

Systematics and research history

Chimonobambusa communis is a species from the genus Chimonobambusa , Tribus Arundinarieae , subfamily bamboo (Bambusoideae). The species was of Xue Jiru and Yi Tongpei However, invalid and in 1988 again in 1980 as Qiongzhuea communis ( Basionym ) in the Acta Botanica Yunnanica first described . Lan Kai Min placed the species in 1988 in the genus Chimonobambusa . Another synonym of the species is Oreocalamus communis Keng f.

Individual evidence

  1. ↑ a b c d e Zheng-de Zhu, Chris Stapleton: Chimonobambusa communis In: Flora of China. Volume 22, p. 161.
  2. ↑ a b W. D. Clayton, M. Vorontsova, KT Harman, H. Williamson: Chimonobambusa communis. In: GrassBase - The Online World Grass Flora. Royal Botanic Gardens, accessed February 28, 2015 .
  3. ↑ Chimonobambusa communis in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
  4. ↑ Qiongzhuea communis. In: The International Plant Name Index. Retrieved February 28, 2015 .
  5. ↑ Chimonobambusa communis. In: The International Plant Name Index. Retrieved February 28, 2015 .
  6. ↑ Rafaël Govaerts (ed.): Chimonobambusa communis. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 28, 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. 161 (English).

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