菌物學(xué)報(bào) 15 January 2009, 28(1): 001-013
狹義小奧德蘑屬（膨瑚菌科,蘑菇目）的一個(gè)新系統(tǒng)
楊祝良1 張麗芳1 Gregory M. MUELLER2 Gerhard W. KOST3 Karl-Heinz REXER3
1中國(guó)科學(xué)院昆明植物研究所生物多樣性與生物地理學(xué)重點(diǎn)實(shí)驗(yàn)室 昆明650204
2美國(guó)芝加哥費(fèi)爾德自然歷史博物館植物部 芝加哥 IL 60605-2496
3德國(guó)馬爾堡大學(xué)生物學(xué)系系統(tǒng)植物學(xué)與真菌學(xué)實(shí)驗(yàn)室 馬爾堡35032
摘 要：本文對(duì)狹義小奧德蘑屬Oudemansiella s. str.的概念做了修訂，在修訂后的屬中,，狹義干蘑屬Xerula s. str.的物種不納入其中。在狹義小奧德蘑屬下，提出了一個(gè)包含4個(gè)組O. sect. Oudemansiella,、Mucidula、Dactylosporina 和 Radicatae的新系統(tǒng),。小奧德蘑組sect. Oudemansiella包括熱帶至南溫帶的一些物種,，如新熱帶小奧德蘑O. platensis、澳洲小奧德蘑O. australis,、舊熱帶小奧德蘑O. canarii和寬?cǎi)扌W德蘑O. crassifolia,，這些物種的菌蓋表皮為粘柵欄型，由菌絲組成,，但其中常夾雜有鏈狀排列的膨大細(xì)胞,。粘蘑組sect. Mucidula包含北半球溫帶至亞熱帶的一些物種，如粘小奧德蘑O. mucida,、網(wǎng)褶小奧德蘑O. venosolamellata和近粘小奧德蘑O. submucida,，其菌蓋表皮為粘子實(shí)層-柵欄型，由近棒狀的頂端膨大細(xì)胞組成,。小奧德蘑組和粘蘑組的物種,，在外形和小生境上有相似之處，其擔(dān)子果皆生于地表外的腐木上,，菌柄上有或無(wú)菌環(huán),。刺孢組sect. Dactylosporina包含中南美洲那些孢子表面有指狀凸起的物種。長(zhǎng)根組sect. Radicatae由長(zhǎng)根小奧德蘑O. radicata及其近緣種為代表,，是該屬中最大的組,，包括該屬其他三組之外的所有種。北美的O. americana,、歐洲的O. caussei 和東亞的O. hongoi曾被置于小奧德蘑屬中的白毛組O. sect. Albotomentosae或干蘑屬的亮毛組X. sect. Hyalosetae,，在本系統(tǒng)中它們沒(méi)有納入小奧德蘑屬，因?yàn)樗鼈兛赡艽硪粋€(gè)單獨(dú)的屬,。本文還提出了1新等級(jí),、32個(gè)新組合和1個(gè)新名稱(chēng)。
關(guān)鍵詞：擔(dān)子菌,，新組合,，新名稱(chēng)，命名法,，系統(tǒng)學(xué),，分類(lèi)學(xué)
A new systematic arrangement of the genus Oudemansiella s. str. (Physalacriaceae, Agari-cales)
YANG Zhu-Liang1* ZHANG Li-Fang1 Gregory M. MUELLER2 Gerhard W. KOST3 Karl-Heinz REXER3
1Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China
2Department of Botany, Field Museum of Natural History, Chicago, IL 60605-2496, U.S.A.
3Systematic Botany & Mycology, FB17, Philipps-University Marburg, 35032 Marburg, Germany
Abstract: The genus Oudemansiella s. str. has been revised and circumscribed as an assemblage of taxa excluding the genus Xerula s. str. A new systematic arrangement with four sections, i.e., Oudemansiella, Mucidula, Dactylosporina and Radicatae, is proposed. Section Oudemansiella is comprised of tropical to south temperate species, e.g., O. platensis, O. australis, O. canarii and O. crassifolia, with an ixotrichoderm pileipellis composed of filamentous hyphae that, in many cases, are intermixed with inflated cells often occurring in chains, while section Mucidula encompasses north temperate and subtropical taxa such as O. mucida, O. venosolamellata and O. submucida that have an ixohymeniderm-trichoderm pileipellis composed of more or less clavate terminal cells. Sections Oudemansiella and Mucidula share similar habitats and forms of basidiomata, i.e., with or without a (rudimentary) annulus on the stipe and growing on exposed rotten wood. Section Dactylosporina accommodates species from South and Central America with basidiospores that have finger-like ornamentation. Section Radicatae, represented by O. radicata and its allies, is the largest section and includes the remaining species of the genus in its restricted sense. Oudemansiella americana, O. caussei and O. hongoi, previously treated in O. sect. Albotomentosae or Xerula sect. Hyalosetae, are excluded from Oudemansiella in this treatment because preliminary data indicate that they represent a segregate genus. Section Mucidula, 32 combinations and 1 name are newly proposed.
Key words: Basidiomycetes, new combinations, new name, nomenclature, systematics, taxonomy
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