A revision of the Inocybe grammata group in North America including four new taxa
A revision of the Inocybe grammata group in North America including four new taxa
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DOI：
10.1007/s12228-022-09720-0
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发表时间：
2022-09-07
期刊：
影响因子：
0.9
通讯作者：
Walker, Noah C.
中科院分区：
文献类型：
--
作者：
Matheny, P. Brandon;Corrales, Adriana;Walker, Noah C.
根据在北美东部和西部以及中美洲收集的材料，对与Inocybe grammata具有形态相似性的北美物种进行了系统修订。在本文提出的类群中，确定了8个类群，即I. Albodiscae sect. nov.，种的特征通常是具有明显的苍白花盘的双色菌盖，边缘被表面的丝状原纤维覆盖，完全具粉霜的柄，基部轻微或明显的边缘球状，有角到有角的瘤状担孢子，相对较少的瘤，厚壁囊状孢子。本节中的物种主要通过担子节的大小、菌盖的颜色和质地、担孢子长度和根瘤数量的变化、一定程度上的地理位置和植物群丛来区分。该部分包括广泛分布的I. grammata（= I. albodisca），与北美东部的针叶树和桦树有关; I. albodiscoides sp. nov.，以前被归入I. grammata和I. albodisca;白盘I.来自北方佛罗里达的floridana，75年来首次报道; acriolens，加拿大东南部和美国东北部的铁杉和松树的明显伴生种; I. grammatoides，一种分布于美国北方和加拿大东南部的白杨; I. velociasp. nov.，广泛分布于美国东部和哥斯达黎加的橡树和栗树的伴生种; panamica sp. nov.，分布于哥斯达黎加和巴拿马的橡树林和栎属（Oreomunnea）林; vestalis，是Albodiscae组其余部分的姐妹，但缺乏明显的双色菌盖。ITS+28 S、rpb 2和rpb 1的独立同源性被推断。提供了北美分类群的分类学描述、插图和/或注释。
A systematic revision of North American species with morphological similarities to Inocybe grammata was conducted based on materials collected in eastern and western North America and Central America. Eight taxa are confirmed in the group proposed here as I. sect. Albodiscae sect. nov., species of which are often characterized by a bicolorous pileus with a distinct pallid disc, the margin covered with superficial silky fibrils, entirely pruinose stipe with a slight or obvious marginate bulbous base, angular to angular-nodulose basidiospores with comparatively few nodules, and thick-walled cystidia. Species in the section are mainly distinguished by basidiome size, pileus color and texture, variation in basidiospore length and number of nodules, to some extent geographic location, and plant association. The section includes the widely distributed I. grammata (= I. albodisca), which associates with conifers and birch in eastern North America; I. albodiscoides sp. nov. from the Pacific Northwest, previously subsumed under I. grammata and I. albodisca; I. floridana from northern Florida, reported for the first time in more than 75 years; I. acriolens, an apparent associate of hemlock and pine in southeast Canada and the northeast U.S.; I. grammatoides, an aspen associate in northern regions of the U.S. and southeast Canada; I. velicopia sp. nov., a widely distributed associate of oak and chestnut in the eastern U.S. and Costa Rica; I. panamica sp. nov. from oak and oak-Oreomunnea (Juglandaceae) forests in Costa Rica and Panama; and I. vestalis, a European species sister to the rest of sect. Albodiscae but lacking the distinct bicolored pileus. Independent phylogenies of ITS+28S, rpb2, and rpb1 are inferred. Taxonomic descriptions, illustrations, and/or notes of the North American taxa are provided.