爵床科孩儿草属一新组

描述了爵床科孩儿草属的一个新组-密花孩儿草组Rungia sect．Stoloniferoe C．M．Gao＆Y．F．Deng。本新组花序不偏向一侧,苞片均能育,同形。     

中国爵床科一新记录种——翅柄裸柱草

报道中国爵床科一新记录种——翅柄裸柱草[Gymnostachyum sigantum (Benoist) J. B. Imlay],并提供了该种的描述。为名称Gymnostachyum sigantum指定了后选模式。     

爵床科一新组合—菲律宾爵床

查阅模式标本后发现Hypoestes pulgarense Elmer的花单生或少数花聚生于叶腋内,并且花药两室,下方一室具矩.这些特征与枪刀药属(Hypoestes)聚伞花序及单室花药的特征不符,而与爵床属(Justicia)一致.因此提出一新组合--菲律宾爵床(Justicia pulgarensis(Elmer)C.M.Gao & Y.F.Deng).     

中国爵床科老鼠簕属一新组合

提出爵床科-新组合-厦门老鼠簕Acanthus illicifolius Linn.var.xiamenensis（R.T.Zhang）Y.F.Deng,N.H.Xia ＆ H.B.Chen.     

爵床科蛇根叶属一新组合——越南蛇根叶

Staurogyne diandra E. Hossain具能育雄蕊2枚,与叉柱花属（Staurogyne Wall.）能育雄蕊4枚的特征不符,而应属于蛇根叶属（Ophiorrhiziphyllon Kurz）。因此提出新组合——越南蛇根叶（Ophiorrhiziphyllon diandra (E. Hossain) H. J. Xin, D. V. Hai & Y. F. Deng）。     

中国爵床科一新组合——尾叶爵床(英文)

尾叶纤穗爵床(Leptostachya caudatiflora H. S.Lo D.Fang)的花药下方一室基部具距,应为爵床属植物,提出1个新组合——尾叶爵床(Justicia caudatifolia (H.S.Lo D.Fang) Z.P.Hao,Y.F.Deng T.Daniel),而纤穗爵床属仍为单种属。     

中国喜花草属(爵床科)一新组合

将毛冠喜花草Eranthemum pubipetalum S. Z. Huang ex H. P. Tsui 处理为华南喜花草E. austrosinense H. S. Lo的变种,即E. austrosinense H. S. Lo var. pubipetalum （S. Z. Huang ex H. P. Tsui） T. L. Li ＆ Y. F. Deng。该变种与华南喜花草的区别在于花冠被毛和子房无毛。     

爵床科赤水纤穗爵床的订正

经证实最近发表的赤水纤穗爵床实为钟花草之同物异名,在此予以订正.     

广西马蓝属(爵床科)一新种——阳朔马蓝

描述了广西马蓝属Strobilanthes一新种,即阳朔马蓝S.pseudocollina K.J.He＆D.H.Qin,并描绘了形态图。该新种与S.collinaNees近似,但以叶革质,花序无毛,花少且排列稀疏而不同。     

中国爵床科一新记录种-紧贴马蓝

报道中国爵床科马蓝属植物一新记录种―紧贴马蓝StrobilanthesadpressaJ.R.I.Wood。     

中国爵床科—新记录种——毛萼爵床

报道中国爵床-(Acanthaceae)爵床属—新记录种——毛萼爵床(Justicia poilanei Benoist).该种分布于云南南部石灰岩地区,在标本馆长期被鉴定为野靛棵(Justicia patentiflora Hemsl.),但与后者的区别在于它的花冠长约2 cm,花萼裂片三角状卵形和花药基部不具芒状附...     

Antifungal diterpenes from Hypoestes serpens (Acanthaceae)

Two new diterpenes, fusicoserpenol A and dolabeserpenoic acid A, with antifungal activity, were isolated from leaves of Hypoestes serpens (Acanthaceae). Their structures were elucidated by means of spectrometric methods including 1D and 2D NMR experiments and MS analysis. X-ray crystallographic analysis confirmed the structure of fusicoserpenol A and established the relative configuration.     

Genetic analysis of southern African gemsbok (Oryx gazella) reveals high variability, distinct lineages and strong divergence from the East African Oryx beisa

We carried out a population genetic analysis of five southern African gemsbok (Oryx gazella) populations based on 530 bp of the mitochondrial control region and ten microsatellites in 75 individuals. Both markers show the high variability often observed in African bovids. Three of the populations which can be traced back to very small founding or current sizes do not show any signs of reduced variability compared to the remaining populations. The mitochondrial haplotypes form three distinct lineages which most likely originated in the Pleistocene when climate fluctuations led to periodical reduction and spreading of gemsbok habitat and which, today, are found throughout the distribution range. Bayesian microsatellite analyses yielded two groups, suggesting a more recent geographical differentiation following the admixture of the mtDNA lineages. Combining our sequences with available published data of the remaining oryx species allowed for a direct molecular comparison of O. gazella and O. beisa which have sometimes been considered a single species. The average genetic divergence between haplotypes from the two taxa was very high (39.9%), supporting their classification into two different species.     

Botryosphaeriaceae species overlap on four unrelated,native South African hosts

Botryosphaeriaceae represents an important and diverse family of latent fungal pathogens of woody plants. We address the question of host range of these fungi by sampling leaves and branches of four native South African trees, including Acacia karroo (Fabaceae), Celtis africana (Cannabaceae), Searsia lancea (Anacardiaceae), and Gymnosporia buxifolia (Celastraceae). Two new species of the Botryosphaeriaceae, namely Tiarosporella africana sp. nov. and Aplosporella javeedii sp. nov. were identified, together with five known species, including Neofusicoccum parvum, Neofusicoccum kwambonambiense, Spencermartinsia viticola, Diplodia pseudoseriata, and Botryosphaeria dothidea. Most Botryosphaeriaceae occurred on more than one host. With the exception of S. lancea, which was infected by A. javeedii all the hosts were infected by more than one Botryosphaeriaceae species. Collectively, the results suggest that some intrinsic host factors, possibly combined with local environmental conditions, affect the distribution and co-infectivity of various hosts by the Botryosphaeriaceae. This would counteract the general ability of a species in the Botryosphaeriaceae to infect a broad range of plants. The combination of host and environmental factors might also explain why some Botryosphaeriaceae with apparently broad host ranges, are found on different suites of hosts in different areas of the world.     

New species of Justicia (Acanthaceae) from the Guianas

Four new species,Justicia oldemanii, J. mcdowellii, J. wilhelminensis, andJ. prevostiae are described, illustrated, and compared with their closest relatives. A key to species ofJusticia from the Guianas is also provided.