Chervin, RE/ Baker, GE/ Hohl, HR 1968: The ultrastructure of phycobiont and mycobiont in two species of Usnea. - Canad. Jour. Bot.46: 241-245. [RLL List # 69 / Rec.# 3126] Keywords: ULTRASTRUCTURE/ TEM/ MYCOBIONT/ PHYCOBIONT/ USNEA/ HAUSTORIA/ HYPHAE
Abstract: 7 fig. ["The mycobionts displayed structural differences in their walls which apparently are unrecorded for fungus hyphae, resulting in a striking polymorphism of the hyphae. Close contact between mycobiont and phycobiont was seen, and intramembranous haustorial penetration of the algal wall was demonstrated in Usnea rockii."]
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