Piptocephalis chienii sp. nov., a new species found in Taiwan and a key to the known Piptocephalis species

臺灣產一新種簡氏頭珠黴Piptocephalis chienii及頭珠黴屬檢索表

Yu-Han Hou(侯宇翰)；Shu-Cheng Chuang(莊淑錚)；Hsiao-Man Ho(何小曼)

mycoparasite ； Zoopagomycota ； 真菌寄生物 ； 接合菌門

Fungal Science

38卷（2023 / 12 / 01）

31 - 36

英文;繁體中文

Piptocephalis (Piptocephalidaceae, Zoopagales, Zoopagomycetes, Zoopagomycotina, Zoopagomycota) is a genus of mycoparasitic, haustorium-forming fungi and can usually be isolated from soil, dung and leaf litters ubiquitously. Piptocephalis chienii, a new mycoparasite of Cunninghamella bertholletiae, has been isolated from forest soil in Taiwan. It is characterized by an erect main sporophore, which produces a fertile system comprising five successive dichotomously branching sporophores. The sporophores are smooth and perforated with a projecting pore. The head cells are obconical and deciduous, bearing six merosporangia with 3-4 spores each. The spores are cylindrical, smooth-walled, and the spore head is dry at maturity. The zygospore wall has a rugulose reticulate ornamentation. This new species is compared with other related taxa, and an identification key to the known species of Piptocephalis is provided.

本文描述與圖示一新種Piptocephalis chienii（簡氏頭珠黴），係由土壤分離得到。此菌的特徵為具直立主要孢子囊柄，向上產生五次雙叉分支，孢子囊柄平滑，有具孔洞之隔板，孔洞有管狀突起。分支末端有頭細胞，著生6個柱狀孢子囊，成熟時維持乾燥。頭細胞倒錐形，成熟時掉落。柱狀孢子囊內有3-4柱狀孢子。接合孢子外壁粗糙，有裂紋，內壁平滑。文中比較此種與相近種類之異同點，並提供一頭珠黴屬之檢索表。