首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
2.
Yukari Mizuta 《Mycoscience》2006,47(6):380-384
Two new species and one new variety of Oudemansiella (Agaricales) from Japan are described and illustrated: (1) Oudemansiella latilamellata sp. nov. (subgenus Xerula, section Radicatae) has relatively broad lamellae and broadly ellipsoid spores with a subacute apex; (2) Oudemansiella rhodophylla sp. nov. (subgenus Xerula, section Radicatae), growing in deciduous forests of Fagus crenata, Quercus crispula, etc., is characteristic in having lamellae tinted reddish; and (3) Oudemansiella amygdaliformis var. bispora var. nov. (subgenus Xerula, section Albotomentosae) is distinguished from the type variety by having two-spored basidia and grows in evergreen oak forests (Castanopsis sieboldii, Quercus glauca, etc.) or bamboo groves.  相似文献   

3.
The taxonomically important characteristics of Xerula melanotricha Dörfelt are constant in fruit bodies, also in such which have been formed in culture. Studies on the development of the fruit bodies in culture showed that the macrosetae are formed already in the primordium. At first they are hyaline and colourless. A dark fluid (guttation) is secreted by the macrosetae. This is a specific characteristic of Xerula melanotricha. The fluid has an influence on the colours of the fruit bodies. The American specimens of “Collybia longipes” are revised by Mitchel & Smith (1978). These autors consider all the American collections to be a special variety, “Oudemansiella longipes (St. Amans) Moser var. americana Mitchel et Smith”. Investigations of the holotypus and of other collections suggested that this variety is a well characterized, seperate species. This taxon is an endemit of the Southern Rocky Mountains. In this paper it is described as Xerula americana Dörfelt sp. nov.  相似文献   

4.
对狭义干蘑属( Xerula s . str .) 的范围进行了重新界定, 该属仅包括模式种干蘑( X. pudens) 及其周围的几个种。属的特征是担子果金钱菌状, 有假根; 菌盖及菌柄表面干燥, 被有黄色至褐色直立、披针形的刚毛; 菌褶边缘无不育带; 子实层有近梭形的小担子。这些特征可以将干蘑属的物种从干蘑属- 小奥德蘑属复合群中分开。现知干蘑属包含六种, 本文提供了这些种的检索表, 并对各种进行了描述、图示或讨论。其中, 硬毛干蘑( X. strigosa) 是一新种, 它与干蘑( X. pudens) 和中华干蘑( X. sinopudens) 相似, 但与干蘑不同在于其担孢子较长, 锁状联合稀少, 侧生囊状体顶端壁薄; 与中华干蘑的区别在于其侧生囊状体壁厚, 顶端有头状至近头状膨大并覆盖有结晶, 担孢子宽椭圆形至椭圆形。中华干蘑和小刺干蘑( X. setulosa) 分别为我国和哥斯达黎加的新记录种。干蘑属虽然广布北半球, 但未见东亚- 美洲或欧亚广布的物种分布类型。  相似文献   

5.
狭义干蘑属(蘑菇目)概要及新的系统学处理   总被引:1,自引:0,他引:1  
对狭义干蘑属(Xerulas.str.)的范围进行了重新界定,该属仅包括模式种干蘑(X.pudens)及其周围的几个种。属的特征是担子果金钱菌状,有假根;菌盖及菌柄表面干燥,被有黄色至褐色直立、披针形的刚毛;菌褶边缘无不育带;子实层有近梭形的小担子。这些特征可以将干蘑属的物种从干蘑属-小奥德蘑属复合群中分开。现知干蘑属包含六种,本文提供了这些种的检索表,并对各种进行了描述、图示或讨论。其中,硬毛干蘑(X.strigosa)是一新种,它与干蘑(X.pudens)和中华干蘑(X.sinopudens)相似,但与干蘑不同在于其担孢子较长,锁状联合稀少,侧生囊状体顶端壁薄;与中华干蘑的区别在于其侧生囊状体壁厚,顶端有头状至近头状膨大并覆盖有结晶,担孢子宽椭圆形至椭圆形。中华干蘑和小刺干蘑(X.setulosa)分别为我国和哥斯达黎加的新记录种。干蘑属虽然广布北半球,但未见东亚-美洲或欧亚广布的物种分布类型。  相似文献   

6.
Thirty stationary and submerged cultures of species of the genusOudemansiella Speg.,viz. two narrow-region species (O. brunneomarginata, O. canarii) and two primarily wideregion species (O.mucida, O. radicata) were compared. Stationary cultures have identical macroscopic and microscopic features (they produce crust, teleomorph, large thick-walled basidiospores with an apiculum and an uneven surface, dikaryotic hyphae have clamp connections). “Coils” were detected in the mycelium of two species by SEM. Submerged cultures produce antibacterial and particularly antifungal antibiotics, although with various intensity.O. brunneomarginata was first studied in pure culture and its microstructures were first studied by SEM. It could be demonstrated that this species is related with other representatives of the genusOudemansiella. In the present taxonomy of basidiomycetes it is advisable to extend and deepen data concerning a single genusOudemansiella with a series of interspecies taxons, without impairing “borders” of the genus.  相似文献   

7.
本文对狭义小奥德蘑属Oudemansiella s. str.的概念做了修订,在修订后的属中,狭义干蘑属Xerula s. str.的物种不纳入其中。在狭义小奥德蘑属下,提出了一个包含4个组O. sect. Oudemansiella、Mucidula、Dactylosporina 和 Radicatae的新系统。小奥德蘑组sect. Oudemansiella包括热带至南温带的一些物种,如新热带小奥德蘑O. platensis、澳洲小奥德蘑O. australis、旧热带小奥德蘑O. canarii和宽褶小奥德蘑O. crassifolia,这些物种的菌盖表皮为粘栅栏型,由菌丝组成,但其中常夹杂有链状排列的膨大细胞。粘蘑组sect. Mucidula包含北半球温带至亚热带的一些物种,如粘小奥德蘑O. mucida、网褶小奥德蘑O. venosolamellata和近粘小奥德蘑O. submucida,其菌盖表皮为粘子实层-栅栏型,由近棒状的顶端膨大细胞组成。小奥德蘑组和粘蘑组的物种,在外形和小生境上有相似之处,其担子果皆生于地表外的腐木上,菌柄上有或无菌环。刺孢组sect. Dactylosporina包含中南美洲那些孢子表面有指状凸起的物种。长根组sect. Radicatae由长根小奥德蘑O. radicata及其近缘种为代表,是该属中最大的组,包括该属其他三组之外的所有种。北美的O. americana、欧洲的O. caussei 和东亚的O. hongoi曾被置于小奥德蘑属中的白毛组O. sect. Albotomentosae或干蘑属的亮毛组X. sect. Hyalosetae,在本系统中它们没有纳入小奥德蘑属,因为它们可能代表一个单独的属。本文还提出了1新等级、32个新组合和1个新名称。  相似文献   

8.
Six Inocybes are described and illustrated as new taxa or new records from Japan. A new species, Inocybe magnicarpa, is a member of section Marginatae. Two new varieties, I. malenconii var. cylindrata, a member of section Dulcamarae, and I. brunneorufa var. angusta, a representative of section Marginatae. Inocybe reisneri (section Rimosae) and I. fuscidula (section Tardae), are recorded as new to Japan. Inocybe pseudodestricta (section Tardae) is redescribed from a new locality (Chiba Prefecture). They are compared with similar taxa.  相似文献   

9.
A new species, namely Pyrus cordifolia (P. sect. Pashia) is described as new to science, and two new records including P. tamamschianiae (P. sect. Pyrus) and P. theodorovii var. latifolia (P. sect. Argyromalon) are reported for the flora of Iran. These taxa are compared with their closest relatives. Photographs and a distribution map of these taxa as well as an illustration of the new species are presented. An identification key to members of P. sect. Pashia in Iran is provided.  相似文献   

10.
The classification of the family Micropezidae is re-examined and a key is given to the five subfamilies now recognised, of which Calycopteryginae is described as new and Eurybatinae is raised from tribal rank. Metopochetini is a new tribe of Eurybatinae. A key is given to the nine genera now included in the Eurybatinae, of which Papeza is described as new. P.szentivanyi is a new species from Papua. Notes on the taxonomy and distribution of genera are included. The position of Anaeropsis Bigot in the Micropezidae is confirmed. New synonymies are established as follows: Crepidochetus Enderlein (= Gongylocephala Czerny syn. n.); Metopochetus bivittatus (Macquart) (= Calobata tenuipes Walker syn. n.). New generic combinations are as follows: Metopochetus terminalis (Walker) and M.compressus (Walker) from Calobata; Crepidochetus nigrifemur (Czerny), C.pallidus (Steyskal), and Cater (Steyskal) from Gongylocephala; Crosa fragilis (Walker) from Micropeza; Crosa nigriventris (Enderlein) and C.uneifera (de Meijere) from Eurybata.  相似文献   

11.
New records of Cynipid gall wasps and inquilines for the Italian peninsula and Sicily and their new host plants for the Palaearctic Region are listed and commented on. Among them we find: Cerroneuroterus cerrifloralis (Müllner 1901) as new for Italy and new for the Palaearctic region as host on Quercus suber; Andricus multiplicatus Giraud 1859 on Q. suber, as new host for the Palaearctic region; Aylax papaveris (Perris 1839), reported in Italy over a century ago, but later overlooked; Cerroneuroterus minutulus (Giraud 1859), also reported more than a century ago from Sicily, but later overlooked. Among the inquilines are here listed: Synergus variabilis Mayr 1872, emerged from Janetia cerris (Kollar 1850) galls (Diptera Cecidomyiidae), and found for the first time in the Palaearctic Region as host on Q. suber; Saphonecrus haimi (Mayr 1872) and Saphonecrus barbotini Pujade-Villar & Nieves-Aldrey 1986, are new records for Italy.  相似文献   

12.
This paper presents new species, combinations, national reports and host records for the South African rust fungi (Uredinales/Pucciniales). Endophyllum mpenjatiense on cf. Hibiscus sp. (Malvaceae), Phakopsora combretorum (anamorph Uredo combreticola) on the new host Combretum apiculatum (Combretaceae) and Uredo sekhukhunensis on Ziziphus mucronata (Rhamnaceae) are described as new species. Dietelia cardiospermi and E. metalasiae are proposed as new combinations to replace Aecidium cardiospermi on Cardiospermum halicacabum (Sapindaceae) and A. metalasiae on Metalasia spp. (Asteraceae), respectively. Four species are new records for South Africa: Crossopsora antidesmae-dioicae on Antidesma venosum (Euphorbiaceae), Phakopsora ziziphi-vulgaris on Z. mucronata, and Uromyces cypericola and Puccinia subcoronata, both on a new host, Cyperus albostriatus (Cyperaceae). The record of P. subcoronata is the first one from outside the New World. Puccinia scirpi is reported as a possible addition to the South African rust fungi. New host records and observations are presented for Pucciniastrum agrimoniae that is recorded on two new host genera and species, Cliffortia odorata and Leucosidea sericea (Rosaceae), Uromyces cypericola whose urediniospores are described for the first time, Phakopsora stratosa in that spermogonia and Uredo-like aecia were discovered, and for Sphaerophragmium dalbergiae in that characters of the urediniospores are re-evaluated. A lectotype is selected for Aecidium garckeanum and spermogonia are reported for this rust for the first time. The rust fungi of Ehrharta (Poaceae) are discussed and critically evaluated in the light of spore morphology and host species.  相似文献   

13.
We have characterised a new family of repetitive sequences that we have named Mrs (maize repetitive sequences). Mrs elements are associated with different maize genes and seem to be specific for the genome of Zea species. Mrs elements are short, AT-rich and contain terminal inverted repeats (TIRs). The sequence of their TIRs, as well as the fact that they are flanked by short repetitions that tend to be TAA, allows us to propose Mrs as a new subfamily of Tourist transposable elements.  相似文献   

14.
Abstract. The phylogenetic analysis of ninety‐two adult morphological characters supports the treatment of Nirvaninae as a junior synonym of Evacanthinae and the redefinition of Evacanthinae to include the tribes Nirvanini, Balbillini, Evacanthini and Pagaroniini. The analysis indicates that Nirvaninae, as previously defined, is polyphyletic. A key to tribes and Neotropical genera is provided and diagnostic features for these taxa are reviewed. Jassoqualus Kramer, Neonirvana Oman, Synogonia Melichar (=Jassopronus Nielson & Godoy, syn.n.) and Tahura Melichar are retained within Nirvanini and two new Neotropical genera of this tribe are described and illustrated: Antillonirvana, gen.n., based on two new species from the Dominican Republic and one from Cuba; and Chibchanirvana, gen.n., based on two new species from Colombia. Pentoffia Kramer and Evanirvana Hill are treated as incertae sedis within Evacanthinae. Six new species of Pentoffia, a new species of Synogonia, a new species of Jassoqualus, two new species of Neonirvana and eleven new species of Tahura, all from South America, are also described and illustrated. The following taxa included previously in Nirvaninae are excluded from Evacanthinae, sensu lato: Tungurahuala Kramer to Cicadellinae; Columbonirvana Linnavuori to Typhlocybinae; Macroceratogoniini to Coelidiinae; Occinirvanini Evans to Deltocephalinae. Omaranus Distant, placed previously in Occinirvanini, is transferred to Doraturini (Deltocephalinae).  相似文献   

15.
Abstract

Three new genera—Austroclima, Mauiulus, and Cryophlebia—are established for species of Leptophlebiidae from New Zealand. The following new combinations are included: Austroclima sepia (Phillips) and Cryophlebia aucklandensis (Peters). Atalophlebioides sepia is redescribed as Austroclima sepia and a neotype is designated. Two new species, Austroclima jollyae and Mauiulus luma, are described. All life stages are described, and the relationships of each genus are discussed. Keys are given to male and female imagos, subimagos, and nymphs of each species, and to all New Zealand genera with species previously placed in Atalophlebioides.  相似文献   

16.
The taxonomy and systematics of European house spiders, currently constituting the ill‐defined Tegenaria?Malthonica complex (including Aterigena) in the family Agelenidae, are revised. In Europe four monophyletic genera and 81 species are defined. One genus, Eratigena gen. nov. , and seven species are described as new; at species level 17 new synonyms and 20 new combinations are proposed, and the original combination of 14 species is reinstated. Five species could not be placed (incertae sedis) because of insufficient material and one taxon is regarded as ‘nomen dubium’. On the basis of a detailed morphological assessment, 88 characters were chosen for a cladistic analysis. Phylogenetically informative characters include mostly spination patterns as well as spinneret and genital structures. In addition to morphology, three gene sections [cytochrome c oxidase subunit 1 (CO1), nicotinamide adenine dinucleotide dehydrogenase subunit 1 (NADH1) 28S] were analysed. Morphological and molecular analyses were performed individually and in combination applying maximum parsimony and Bayesian tree search methods. In all resulting trees Malthonica and Tegenaria in their present composition are either polyphyletic or paraphyletic. Consequently, we redefined the two genera and erected a new genus, Eratigena gen. nov. Identification keys are provided for the European agelenid genera as well as for the European species of Tegenaria and Eratigena gen. nov. The genera and most of the constituent species are described and illustrated. The new classification has also been applied to some extra European members of the Tegenaria‐Malthonica complex resulting in additional three new synonyms, seven reversals to the original combination, and four new combinations. © 2013 The Linnean Society of London  相似文献   

17.
18.
This revision deals with the Zygothrica samoaensis species group, which includes 15 species, five of which are described as new to science. Two synonymies are proposed: Z. vietnamensis Grimaldi, 1990, as a junior synonym of Z. flavofinira Takada, 1976, and Z. britannia Grimaldi, 1990, as a junior synonym of Z. malaysiana Grimaldi, 1990. The samoaensis group is divided into three species subgroups: (i) the samoaensis subgroup, consisting of nine species, including a new species, Z. australiaensis sp. nov.; (ii) the fijiana subgroup of Z. fijiana Takada, 1976, and two new species, Z. triscutellaris sp. nov. and Z. bicornigera sp. nov.; and (iii) the leptorostra subgroup of Z. leptorostra Grimaldi, 1990, and two new species, Z. pimacula sp. nov. and Z. quintamaculata sp. nov. Supplementary information on geographic distribution is provided for some species, as well as a key to all species of the samoaensis group. Zygothrica kokodana Grimaldi, 1990, and Z. paleovitta Grimaldi, 1990, have closer affinity with the hirticornis and the quadrivittata species groups, respectively, and so are moved to the corresponding genus Hirtodrosophila.  相似文献   

19.
20.
Morphological studies at the light microscopy and scanning electron microscopy levels of selected fragilarioid diatoms occurring in North American streams and lakes are presented herein. The majority of the samples studied were collected by the US Geological Survey's National Water Quality Assessment Program, which concentrates on stream water quality monitoring throughout the continental USA and Hawaii. Two new species (Staurosirella confusa Morales and Punctastriata mimetica Morales) and a new forma (Pseudostaurosiropsis geocollegarum f. triradiatum Morales) are described and two new combinations (Pseudostaurosira subsalina (Hustedt) Morales and Staurosirella olden‐burgiana (Hustedt) Morales) are provided. Morphological details of an additional taxon, Staurosira construens var. binodis (Ehrenberg) Hamilton in Hamilton et al. are also presented. The taxonomic affinities of all these taxa, as well as some evolutionary aspects and ecologic characteristics, are discussed in the light of published material.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号