Epigeous and Hypogeous Pezizales of Western North America

9400545在北美西部的韦伯)大约有120个属，可能多达450种，其中包括羊肚菌和相关的杯状真菌(上位分类群)和块菌(下位分类群)。该目包括重要的菌根真菌和腐生真菌；几种是具有相当经济价值的肉质植物；少数偶尔是严重的植物病原体。美国西部包含了巨大的地质、地形、气候和植物区系多样性，这反映在那里的佩齐萨莱斯山脉的明显多样性上。该项目是第一次尝试调查和盘点该地区Pezizalean真菌的多样性。由于美国西部(或北美的任何其他地区)没有该目的现代分类学处理方法，因此有助于识别分类群(二分和概要检索表)，并将准备对已知和新发现的分类群的描述。野外工作的目标包括勘探更多的多样性、新记录和澄清已知类群的分布模式。目前正在从保存在美国区域和国家草药库中的主要Pezizalean收藏品汇编成一个以加入为基础的数据库；正在从已发表的参考文献中挑选更多的记录。现有的收集资料为确定分布、评估多样性和帮助确定需要进一步实地工作的地区提供了原材料。由于与欧洲、亚洲和北美其他地区的植物区系联系，对北美洲西部分类群的处理在北半球的大部分地区都是有用的。

9400545 Weber In western North America the Pezizales Fungi, Ascomycotina) are represented by approximately 120 genera an perhaps as many as 450 species which include the morels and related cup-fungi (epigeous taxa) and truffles (hypogeous taxa). The order includes important mycorrhizal and saprophytic fungi; several are esculents of considerable economic value; a few are occasional serious plant pathogens. The western United States encompasses great geologic, topographic, climatic, and floristic diversity which is reflected in the apparent diversity of the Pezizales Therein occurring. This project is the first to attempt to survey and inventory the diversity of Pezizalean fungi for the region. Because no modern taxonomic treatment of this order is available for the Western united States (or any other region of North America) aids to identifying taxa (dichotomous and synoptic keys) and descriptions of known and newly discovered taxa will be prepared. Goals for field work include prospecting for additional diversity, new records, and clarifying distribution patterns of known taxa. An accession-based database is being compiled from the major sets of Pezizalean collections deposited in regional and national herbaria in the United States; additional records are being culled from published references. The existing collections provide the raw material for determining distributions, assessing diversity, and helping to identify areas were further field work is needed. Because of floristic ties with Europe, Asia, and other parts of North America, a treatment of western North America taxa will be useful throughout much of the Northern Hemisphere.