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首页> 外文期刊>Australian Systematic Botany >A taxonomic revision of the Stylidium despectum group (Stylidiaceae) from southern Australia
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A taxonomic revision of the Stylidium despectum group (Stylidiaceae) from southern Australia

机译：来自澳大利亚南部的Stylidium despectum组（Stylidiaceae）的分类学修订

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摘要

A morphological review of the diminutive annual species from the Stylidium despectum R.Br. group (Stylidiaceae) is presented. Twelve species are recognised, of which 10 are endemic in the south-west of Western Australia and two are widespread across southern temperate Australia. Following examination of type material, herbarium collections and field observations, a change of circumscription is presented for S. despectum and S. inundatum R.Br. The former name is applied to a widespread species that occurs in Western Australia, South Australia, Victoria, New South Wales and Tasmania, and is characterised by scattered or rosetted leaves, pink and/or white corolla lobes in a fan-shaped arrangement, and an immobile floral column. S. brachyphyllum Sond. is newly placed into synonymy under S. despectum and a lectotype selected. S. inundatum is redefined as a south-western Australian endemic with scattered leaves, vertically-paired or evenly spreading corolla lobes, and a mobile floral column. A lectotype is designated for S. inundatum, and S. sidjamesii Lowrie & Kenneally is treated as conspecific. S. beaugleholei J.H. Willis is confirmed for Western Australia, South Australia, Victoria and Tasmania. S. asymmetricum Wege, a new and apparently rare species from the Northern Jarrah Forest in south-western Australia, is formally described and revised descriptions are provided for S. longitubum Benth., S. pygmaeum R.Br., S. rhipidium F.L. Erickson & J.H. Willis, S. roseoalatum F.L. Erickson & J.H. Willis, S. roseonanum Carlquist, S. tinkeri Lowrie & Kenneally, S. utricularioides Benth. and S. xanthopis F.L. Erickson & J.H. Willis. Alectotype is designated for S. longitubum Benth. and S. utricularioides var. rosulatum Mildbr. is newly placed into synonymy under S. roseoalatum. Akey to species is provided, along with photographs to aid identification. Further field-based studies are required to refine the taxonomy of this group and to better understand the distribution, rarity and conservation status of some of the taxa. In Western Australia, seven species are listed as being of conservation concern, of which S. asymmetricum, S. tinkeri and S. xanthopis require immediate further survey to ascertain whether they should be given Threatened Flora status.
机译：猪脚谱R.Br.的一年生小型种的形态学评论。小组（Stylidiaceae）。公认有十二种，其中有十种在西澳大利亚州西南部特有，有两种分布在澳大利亚南部的温带地区。在检查了类型的材料，植物标本室收集物和现场观察之后，提出了链球菌（S. despectum）和重竹（S. inundatum R.Br.）的限制条件。前一个名称适用于西澳大利亚州，南澳大利亚州，维多利亚州，新南威尔士州和塔斯马尼亚州的一种广泛分布的物种，其特征是散落或呈玫瑰花状的叶子，呈扇形排列的粉红色和/或白色花冠裂片，以及固定的花柱。 S. brachyphyllum Sond。在S. despectum下被重新命名为同义词，并选择了一个选型。沙棘被重新定义为澳大利亚西南部特有种，叶片散落，花冠裂片垂直配对或均匀分布，花柱移动。一个定型表被指定为und.undundatum，而S. sidjamesii Lowrie＆Kenneally被视为同种的。 S.beaugleholei J.H.威利斯（Willis）已确认在西澳大利亚，南澳大利亚，维多利亚和塔斯马尼亚州使用。正式描述了来自澳大利亚西南部北部贾拉森林的一种新的稀有物种S. asymmetricum Wege，并对S. longitubum Benth。，S. pygmaeum R.Br.，S. rhipidium F.L.进行了描述。埃里克森＆J.H.威利斯（Willis，S. roseoalatum F.L.）埃里克森＆J.H.威利斯（Willis），迷迭香（S. roseonanum）卡尔奎斯特（Carlquist），小丁香（S. tinkeri）Lowrie和肯尼利（Kenneally），特异种S.和S. xanthopis F.L.埃里克森＆J.H.威利斯。选型指定为S. longitubum Benth。和U. utricularioides变种。蔷薇。是新加入的玫瑰蔷薇的代名词。提供了物种的钥匙以及照片以帮助识别。需要进行进一步的野外研究，以完善该类别的分类，并更好地了解某些分类群的分布，稀有性和保护状况。在西澳大利亚州，有七个物种被列为需要保护的物种，其中不对称链球菌，丁香链球菌和黄单胞菌需要立即进行进一步调查，以确定是否应赋予它们威胁植物区系。

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