Zhang Wei-Ping, Bai Wei-Ning, Zhang Da-Yong
State Key Laboratory of Earth Surface Processes and Resource Ecology and Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing 100875, China Beijing Normal University Beijing China.
PhytoKeys. 2022 Jan 12;188:73-82. doi: 10.3897/phytokeys.188.77242. eCollection 2022.
Despite having been first published in 1941, (A.Chev.) J.-F.Leroy is only known from three collections in Vietnam, Laos and Thailand. It has not been recollected since then and was long suspected to have become extinct through repeated deforestation events. Here, we report the rediscovery, and meanwhile the first new record in China, of this extremely rare gigantic hickory species at Yunnan province 63 years after its last collection in 1958. Three small patchy subpopulations were found with a total of about 50 adult trees having diameter at breast height (DBH) larger than 60 cm, together with some seedlings and saplings, but the fruit set was low. Based on new and fresh material, we present a revised morphological description of , and an updated distribution map for the species. In addition, we also provide a key for the hickories in China. Lastly, we suggest should be listed as a Critically Endangered (CR) species according to the latest IUCN Red List Categories and Criteria.
尽管（A.Chev.）J.-F.勒罗伊首次发表于1941年，但仅在越南、老挝和泰国的三个标本集中被发现。自那时起就再也没有被重新采集到，长期以来人们一直怀疑它因反复的森林砍伐事件而灭绝。在此，我们报告了这种极其稀有的巨型山核桃物种在1958年最后一次采集63年后于云南省被重新发现，同时这也是在中国的首次新记录。发现了三个小块状的亚种群，共有约50株胸径大于60厘米的成年树，还有一些幼苗和幼树，但结实率较低。基于新的新鲜材料，我们给出了（该物种）修订后的形态描述以及该物种的更新分布图。此外，我们还提供了中国山核桃属植物的检索表。最后，我们建议根据最新的《世界自然保护联盟濒危物种红色名录》类别和标准，（该物种）应被列为极危（CR）物种。
