SAIN Invasive Plant Pests Resource Collection for: Hairy jointgrass
Species (scientific name): Arthraxon hispidus
| Title: Mound springs in the Dawson River Valley, Queensland: Vegetation environment relations and consequences of a proposed impoundment on botanical values. |
| Author: Fensham R.J. |
| Source: Queensland Herbarium, Brisbane Botanic Gardens, Mt Cootha Rd., Toowong, Queensland 4066, Australia Pacific Conservation Biology 4 (1) 4254. |
| Source Type: Journal |
| Publication Date: 1998 |
| Abstract: Boggomosses are perennial mound springs in the Dawson River Valley, Queensland, an area subject to seasonal and often more prolonged drought. The results of a vegetation survey of the boggomosses are presented and assessed in relation to an impoundment proposed for the area. A classification of site species data defined four boggomoss communities having distinct associations with soil texture and fertility, landscape position and possibly the age of springs. A measure of biogeographic significance was assigned to the plant species on the basis of rarity, isolation, affinity with the coastal flora and latitudinal limits. An impoundment at the maximum proposed height of 185 m would: a) inundate about 58% of the total number of springs; b) inundate 62% of significant community 1 springs that have high conservation significance; c) inundate all boggomoss populations of 26% of native plant species; d) inundate 30% of the boggomoss populations of the species that currently have two or more boggomoss populations to a level of one or less boggomoss populations; a) inundate all boggomoss populations of two out of 25 biogeographically significant species; f) inundate six out of 12 boggomoss populations of the vulnerable species Arthraxon hispidus; g) not inundate the single population of the vulnerable species Thelypteris confluens although the population would be within 1 m altitude of the maximum water height; h) not inundate the two populations of the endangered species Eriocaulon carsonii and Myriophyllum sp. (Aramac B. Wilson 110). Substantal lessening of impact on community 1 sites are achieved at dam water levels down to 177 m altitude and this trend is reflected in a progressive increase in the security of individual species. For example at the latter level, 88% of species would remain intact in more than one population and all known populations of Arthraxon would remain intact. |
| Title: Additions to the flora of Nepal IV. |
| Author: Siwakoti M., Varma S.K. |
| Source: Dep. Bot., Post Grad. Campus, Tribhuvan Univ., Biratnagar, Nepal Journal of Economic and Taxonomic Botany; 21 (1) 117121. |
| Source Type: Journal |
| Publication Date: 1997 |
| Abstract: The new taxa added in the present paper are Arthraxon hispidus (Thunb.) Makino, Brachiaria distachya (L.) Stapf, B. mutica Stapf, Dichanthium caricosum (L.) A. Camus, Digitaria bicornis (Lamk.) Roem. & Schult., Echinochloa cruspavonis (H.B. & K.) Schult.. E. stagnina (Retz.) P. Beauv., Eragrostis diarrhena (Schult.) Steud., Leptochloa panicea (Retz.) Ohwi, Pennisetum pedicellatum Trin. and P. purpureum Schum. of Poacese Barnhart from the plains of eastern Nepal. 11 species have not been previously reported from Nepal. |
| Title: Occurrence of distinctive cells in leaves of C4 species in Arthraxon and Microstegium (Andropogoneae Poaceae) and the structural and immunocytochemical characterization of these cells. |
| Author: UenoOsamu. |
| Source: International Journal of Plant Sciences.156 (3) 270289. |
| Source Type: Journal |
| Publication Date: 1995 |
| Abstract: Some C4 species in certain genera (e.g., Arundinella and Garnotia) within several tribes of the subfamily Panicoideae have bundle sheathlike cells that are not associated with vascular tissue. These cells are known as distinctive cells (DCs) in the leaves. This article demonstrates that DCs also occur in the leaves of C4 species in the genera Arthraxon and Microstegium within the tribe Andropogoneae. DCs have not previously been recorded in this tribe. In leaves of Arthraxon hispidus, the DCs occur as single or multiple files in the mesophyll but their occurrence is rare. In leaves of Microstegium vimineum also, the DCs occur as single or multiple files, but an unusual feature, namely, bundle sheath cells (BSCs) that surround a single tracheary element, is often observed. The file of DCs in the two species did not extend continuously from the base to the tip of a leaf blade. A file of DCs ends, and then a vascular bundle with BSCs begins continuously, forming a longitudinal series. In the two species mentioned, the respective features of chloroplasts and mitochondria of the BSCs and DCs are essentially similar, and these features correspond to the biochemical classification of the plants as the NADPmalic enzyme type. The DCs possess suberized lamellae in their cell walls, as do the BSCs. An immunogold cytochemical study of the photosynthetic enzymes in leaves of M. vimineum revealed that phosphoenolpyruvate carboxylase was restricted to the cytosol of the mesophyll cells (MCs), and ribulose 1,5bisphosphate carboxylase/oxygenase was found in the chloroplasts of both the BSCs and the DCs. However, pyruvate, Pi dikinase was found in the chloroplasts of the BSCs and the DCs, as well as in those of the MCs, with a high density of immunolabeling in the latter. Such patterns of localization of the various proteins indicates that |
| Title: Arthraxon hispidus (Poaceae), new to Texas. |
| Author: Brown, L.E.Schultz,J. |
| Source: Phytologia. v 71 n 5 379 Nov 01 1991. |
| Source Type: Journal |
| Publication Date: 1991 |
| Abstract: NA |
< Back
Next >
Back To Invasives Common Name Index
|
