Campbell C K, Smith M D
Mycopathologia. 1982 Jun 18;78(3):145-50. doi: 10.1007/BF00466068.
Slide cultures of the type strain of P. boydii Shear, showed percurrent production of conidia by light microscopy over a period of several hours. Scanning and transmission electron microscopy were used to examine the conidiogenesis. The conidiogenous cells developed annular ridges rather than typical annellophoric scars. Evidence that these ridges represented sequential spore production was shown by T.E.M. in the form of a discontinuity of the outer conidiophore wall at the widest point of each ridge.
波伊德氏普罗威登斯菌（Providence stuartii）Shear模式菌株的玻片培养物，通过光学显微镜观察显示在数小时内产孢为向顶式。利用扫描电子显微镜和透射电子显微镜检查分生孢子形成过程。产孢细胞形成环状脊而非典型的瓶梗痕。透射电子显微镜显示，在每个脊的最宽点处，分生孢子梗外壁出现间断，证明这些脊代表连续的孢子产生。
