Four new sequestrate species of Russulaceae found in China
Four new sequestrate species of Russulaceae found in China
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中国发现4个红菇科新隔离种
DOI：
10.11646/phytotaxa.289.2.1
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发表时间：
2016-12
期刊：
影响因子：
1.1
通讯作者：
Fan Li
中科院分区：
文献类型：
--
作者：
Sang Xiaoyu;Li Xuedong;Wang Yanwei;Fan Li
本文描述了红菇科四新种，并附有插图。我们接受了这两种拟伞菌和螯合菌实际上都来自同一起源的概念，将这些下孢菌分类群归入红菇属或乳菇属，分别为刺孢乳菇、黑刺红菇、黑刺乳菇和黑刺乳菇。brevipileocystidiata和R.巨囊藻形态学上，L. spinosporus differs L.镰状孢（R. falcatus）的特征在于其棕色的囊袋、缺乏乳汁和periodiopellis中的厚壁末端元件; absphaerocellaris与Gynomommonophylgilkeyae的区别在于担孢子小，具短刺; brevipileocystidiata与Cystangium clavatum的区别在于缺乏子实层囊和柄柱; megapaplidocystidiata与双孢囊霉的区别在于其担子具槽纹，且周壁有丰富的乳管菌丝。ITS和nrLSU序列为基础的系统发育分析表明，四个螯合物种嵌套在红菇或乳菇分支，但分别在自己的集群，也支持这些新的类群作为不同的物种。
Four new sequestrate species of Russulaceae are described and illustrated from China in this study. Accepting the concept that both the agaricoid and sequestrate species were actually derived from the same origin, we placed these hypogeous taxa in Russula or Lactarius as Lactarius spinosporus , Russula absphaerocellaris , R. brevipileocystidiata and R. megapseudocystidiata . Morphologically, L. spinosporus differs L. falcatus by its brown gleba, the lack of latex and the thick-walled terminal elements in the peridiopellis; R. absphaerocellaris differs from Gymonomyces gilkeyae by the small basidiospores ornamented with short spines; R. brevipileocystidiata is distinguished from Cystangium clavatum by the absence of hymenial cystidia and a stipe-columella; R. megapseudocystidiata is different from Cystangium bisporum by the grooved basidiomata and the abundant laticiferous hyphae in the peridial context. Both ITS and nrLSU sequence-based phylogenetic analyses revealed that the four sequestrate species were nested in the Russula or Lactarius clade, but respectively in their own clusters, also supporting these novel taxa as distinct species.