Aristida adscensionis is an annual to perennial grass with culms 10 100cm long that can be erect, geniculately ascending, or decumbent305. Growth responce of aristida adscensionis and melanocenchris jacquemontii. Many of these strongly affect neighboring plant and microbial communities grime, 1977. The plants database includes the following 38 species of aristida. Plant samples were collected from 6 different altitudinal ranges, viz. It is native to the americas but it is distributed nearly worldwide. The aafs were characterized and compared with other natural fibers by the use of physicochemical analysis and various characterization techniques such as ftir, xrd, nmr, tga, sem and afm. Different components of plants of aristida adscensionis and melanocenchris jacquemontii contained very little dry matter table 6.
Bacterial culture experiments conducted have revealed that extracts of root, shoot and litter bring about a significant inhibition on the development of bacterial colonies of azotobacter. Extracts and leachates of the grass aristida adscensionis inhibited the. Pdf the genera aristida and stipagrostis poaceae in iran. A taxonomic genus within the family poaceae grasses with three awns, known as speargrasses, needlegrasses, wiregrasses, or threeawns. Culms 380 cm, often highly branched above the base. Read on wikipedia edit history talk page print download pdf. New lignocellulosic aristida adscensionis fibers as novel. The record derives from wcsp which reports it as an accepted name record 394312 with original publication details. Aristida stricta carolina wiregrass, pineland threeawn. Plants profile for aristida adscensionis sixweeks threeawn. When soil samples have been treated with these extracts, the soil nitrogen level. Annual threeawn, sixweeks threeawn, annual bristle grass. Exploration of adaptive components in this grass in relation to altitudinal gradient is the first attempt.
This annual grass is quite variable in appearance, its size and shape determined largely by environmental. Aristida is a very nearly cosmopolitan genus of plants in the grass family. Aristida adscensionis name synonyms aristida abyssinica trin. Aristida adscensionis, a monocot, is an annual grass that is native to california, and is also found elsewhere in north america and beyond.
It was introduced to the united states skerman et al. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in. You can change the display of the base map and layers by clicking on the layer control box in the upper righthand corner. Aristida adscensionis is mainly found in dry areas with annual rainfall ranging from 300. Aristida adscensionis is a warmseason grass native of many tropical, subtropical and warm temperate regions quattrocchi, 2006. Data source and references for aristida adscensionis sixweeks threeawn from the usda plants database. Species plantarum, exhibentes plantas rite cognitas, ad genera relatas, cum differentiis specificis, nominibus. It is the characteristic feature of ruderal annual species.
Cooperative extension, which staffs local offices in all 100 counties. Jannov aristida adscensionis pdf plants short to longlived annuals. Allelopathic effects of aristida adscensionis springerlink. Poaceae in thailand wanwipha chaisongkram and pranom chantaranothai applied taxonomic research center, department of biology, faculty of science, khon kaen university, khon kaen 40002, thailand abstract. In this research, the aristida adscensionis fibers aafs were taken out from the plants and its fundamental properties anlayzed for the first time.
Root system was poorly developed and rootshoot ratio was remarkably low. Aristida adscensionis is a species of grass known by the common name sixweeks threeawn. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Request pdf new lignocellulosic aristida adscensionis fibers as novel reinforcement for composite materials. Habit annual, forming erect or sprawling tufts 10100 cm.
This genus is among those colloquially called threeawns wiregrasses, speargrasses and needlegrasses. However, it is not a legal authority for statutory or regulatory purposes. Aristida is distinguished by having three awns bristles on each lemma of each floret. Common needle grass aristida adscensionis feedipedia.
Data source and references for aristida adscensionis. The genus includes about 300 species found worldwide, often in arid warm regions. Pdf taxonomic enumeration of the tribe aristideae aristidoideae. The australasian virtual herbarium avh is an online resource that provides immediate access to the wealth of plant specimen information held by australian herbaria. Download fulltext pdf download fulltext pdf the genera aristida and stipagrostis poaceae in iran article pdf available in willdenowia 381. It grows easily in disturbed and waste areas and has potential to become a weed. Aristida adscensionis sixweeks threeawn aristida arizonica arizona threeawn aristida basiramea forked threeawn aristida beyrichiana. Key to aristida list of species aristida adscensionis aristida californica aristida dichotoma aristida divaricata aristida oligantha aristida purpurea aristida purpurea var. Verified by not on sheet, aristida leptochaeta hack. Structural and functional modifications in a typical arid. Click below on a thumbnail map or name for species profiles.
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