日本では未知であったラクヨウクサスギゴケ(Timmia norvegica var.norvegica)を長野県北部の鑓ヶ岳で見出した.これにより,日本産クサスギゴケ属(Timmia)は,ミヤマクサスギゴケ(T. megapolitana Hedw.)と合わせて2種となった.本種は北半球の北緯40°以北に広く分布することが知られており,今回の日本の産地は本種の分布の南限となる.また,北半球の高緯度地域の石灰岩地に分布する種が,日本の高海抜域の石灰岩地に生育することが知られており,本種もその一例と考えられる.ラクヨウクサスギゴケは,(1)葉身細胞に高い円筒形のマミラをもつ,(2)葉の基部に透明で壊れやすい細胞をもつ,(3)葉が落ちやすい,(4)異型の葉をもつことで,ミヤマクサスギゴケから区別される.また,ラクヨウクサスギゴケは亜寒帯に,ミヤマクサスギゴケは冷温帯に生育する.

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1996年に国立科学博物館の樋口正信博士はバヌアツ諸島で蘚苔類の調査を行われたが,その調査標本からRadula(ケビラゴケ)を借用して検鏡する機会を得た.その結果5種のRadulaを見出したが,その内の4種はバヌアツ諸島から初記録であったので同諸島の苔類フロラへ追加した.

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Species composition of bryophyte epiphytes on temperate forest phorophytes was studied on Mt. Tsukuba, Ibaraki Prefecture, focusing on differences in the number of woody species. There was no clear correlation between the total number of woody species and the number of epiphytic bryophyte species in the stands. The number of epiphytic bryophyte species was associated with ratio of woody plant with epiphytic bryophyte in total woody plant species. A factor influencing the number of epiphytic bryophyte species was the number of woody species bearing epiphytic bryophytes. Two groups of epiphytic bryophytes were recognized, one growing on trees, sub-trees and shrubs and another only on shrubs.

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The author introduced observations of mosses into biology in the upper secondary school. He utilized Bryum capillare Hedw. for students to observe gametangia (archegonia and antheridia), because this moss is a dioecious species which produces gamentangia abundantly and is common in the urban area. Through these observations, students not only gained a better understanding of moss reproduction, but also could study in depth sexual reproduction in the plant world.

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