共查询到20条相似文献,搜索用时 78 毫秒
1.
2.
青海湖早熟禾Poa stenostachya S.L.Lu et X.F.Lu,sp.nov. Fig.1 .Typus:Qinghai(青海 ) ,Tianjun Xian(天峻县 ) ,the south of Sanjiaocheng(三角城 )near Qinghai Lake(青海湖 ) ,between Hudong and Ganzihe(湖东种羊场至甘孜河之间 ) ,on marshy meadow,elevations about3 2 50 m,1 999.7.2 5,Chen Gui-chen etal.(陈桂琛等 ) 2 2 64 A( HWNP) .Species a Poa tibetica R.Brown similis,sed planta robusta,vaginis fere ad basimclausis usque ad1 8mm longis,ligulis3~ 3 .5mm longis,panicula plus minusve laxa,a… 相似文献
3.
盘县草沙蚕 新种 图1 Tripogon panxianensis H. Peng, sp. nov. Affinis T. filiformi Nees ex Steud. Sed laminis supra inter nervos praesertim basi appressis pilis usque ad 10 mm longis; spicis brevioribus, 3.5—10 cm longis; spiculis sine bracteolis sub glumis; glumis apice integris acuminatis; lemmatibus brevioribus, tantum 2.5 mm longis, aristis mediis pluries valde reflexis, eallo pilis ad 0.8 mm longis; paleis lemmatibus leviter breviorbus; stamine 1, anthera ad 1.2 mm longa differt. Perennis, culmi graciles erecti, dense caespitosi, 7—20 cm alti, laeves glabrique. Vaginae foliorum laeves glabrique, sed in oribus laxe villosae; ligula valde brevis vel fere absens; laminae erectae, pluries in aeiculas invotutae, 3.5—10 cm longae, 1—1.5 mm latae, infra laeves, supra ad nervos seabridae, inter nervos praesertim basi appressis pills usque ad 10 mm longis. Spica erecta 3.5—10 em longa, 4 mm lata; rhaehis laevis, internodiis 3—9 mm longis; spiculae 4—8-florae, summis 相似文献
4.
广东省3种野生香茅属植物精油的化学成分及含量分析 总被引:1,自引:0,他引:1
利用GC-MS技术分析了广东省3种野生香茅属(Cymbopogon Spreng.)植物叶片精油的化学成分及其相对含昔.结果表明,3种植物精油中的化学成分丰富.从橘草[C. goeringii(Steud.)A.Camus]精油中鉴定出25种化学成分,主要成分为香叶醇、香茅醛、Z-柠檬醛和E-柠檬醛,相对含量分别为26.56%、23.49%、19.65%和12.78%;从扭鞘香茅[C. hamatulus(Nees ex Hook.et Arn.)A.Camus]精油中鉴定出16种化学成分,主要成分为甲基丁香酚、甲基异丁香酚、3,5,3',5'-四甲基联苯和3,4-二乙基-1,1'-联苯,相对含量分别为19.46%、12.90%、16.88%和8.63%;从青香茅[C. caesius(Nees ex Hook.et Arn.)Stapf]精油中鉴定出28种化学成分,主要成分为甲基丁香酚、甲基异丁香酚和藜芦醛,相对含量分别为29.39%、22.25%和6.58%.香茅属植物的精油成分因种类和产地不同而有一定的差异,在实际生产中应根据需要对香茅属植物资源进行合理的开发和利用. 相似文献
5.
6.
7.
9.
峨眉南星 新种 图1 Arisaema omeiense P. C. Kao, sp. nov. (sect. Auriculata Engl.) Species A. auriculato S. Buchet, sed Spadice minore, inflorescentia mascula cylindrica, 6—7 mm longa, 2—3 mm diam., densiflora, inflorescentia feminea conica, c. 5.5 mm longa, c. 2.7 mm diam., appendice filiformi 5.5—7.5 cm longa, ex laminis spatharum longe exserta, arcuatim pendula differt. 相似文献
10.
11.
芸香草和西昌香茅挥发油的化学成分张荣,苏中武,李承祜(第二军医大学药学院,上海200433)关键词芸香草,西昌香茅,挥发油ChemicalconstituentsofessentialoilsfromCymbopogondistons(NeesexS... 相似文献
12.
13.
14.
中国石斛属一新种 总被引:5,自引:0,他引:5
Dendrobium fanjingshanense Z. H. Tsi ex X. H. Jin et Y. W. Zhang, sp. nov. Fig. 1
Habitu D. wilsonii Rolfe simile, a quo tepalis revolutis fulvis, lobo labelli intermedii infra medium macula una flabellata purpurea ornato.
Epiphyticum; caulis teres, 20~40 cm altus, 2~3 mm crassus, caespitosus, superne 5~6-foliatus, internodiis 1~1.5 cm longis. Folia oblongo-lanceolata, subcoriacea, 2~5 cm longa, 5~15 mm lata, apice obtusa et plus minusve hamata, basi vaginis tubulatis membranaceis obtecta. Inflorescentiae e lateribus partium superarum caulium annotinorum defoliatorum nascentes, versus apicem caulis laterales, 1~2-florae; pedunculi 2~3 mm longi, ca. 1 mm crassi, basi vaginis 3~4 membranaceis 3~4 mm longis instructi; bracteae ovato-triangulatae, 3~5 mm longae, apice acutae, macula atro-fusca ornatae. Flores patentes; pedicelli cum ovario ca. 2~3 cm longi; tepala revoluta, fulva, apice obtusa; sepalum intermedium oblongum 2 cm longum, medio 6~7 mm latum, apice fere obtusum; sepala lateralia paulo oblique ovato-lanceolata, sepalo intermedio aequilonga sed medio paulo angustiora, apice obtusa, basi cum pede columnae mentum obconoideum ca. 8 mm longum 6 mm latum apice obtusum formantia; petala subelliptica, ca. 2 cm longa, medio 6 mm lata, apice subobtusa; labellum fulvum, basi purpureum et dense velutinum, obscure trilobatum, lobis lateralibus semiorbiculatis erectis, basi (inter lobos laterales) callo uno purpureo praeditis, lobo intermedio ovato, ca. 1 cm longo, 7 mm lato, apice subacuto et recurvo, supra medio carinato, glabro; columna alba, ca. 3 mm longa, basi in pedem ca. 9 mm longum producta, pede medio purpurato, glabro; operculum antherae album, ambitu rhombicum, glabrum; pollinia 4. 相似文献
15.
16.
17.
XIAO Hong-Xing 《植物分类学报:英文版》2000,38(4):398-400
18.