The Hypnaceae is a big family of pleurocarps,including about 60 genera, distributing worldwide in many kinds of substrates.
灰藓科是侧蒴藓类中较大的科,约60属,分布世界各地,习见于多种基质上。
参考来源 - 内蒙古灰藓科（Hypnaceae）系统分类及区系研究
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Hypnaceae
abstract:Hypnaceae is a large family of moss with broad worldwide occurrenceITIS Report. 1999 in the class Bryopsida, subclass Bryidae and order Hypnales.