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|genus=Glaucidium
|genus=Glaucidium
|species=palmatum
|species=palmatum
|common_name=Japanese Wood Poppy
|habit=shrub
|habit=shrub
|habit_ref=Flora - A Gardener's Encyclopedia ISBN 0881925381
|habit_ref=Flora - A Gardener's Encyclopedia ISBN 0881925381
|usda_ref=Flora - A Gardener's Encyclopedia ISBN 0881925381
|usda_ref=Flora - A Gardener's Encyclopedia ISBN 0881925381
|max_zone=9
|max_zone=9
|image=Upload.png
|image=Shirane-aoi.jpg
|image_width=240
|image_width=240
}}
}}
'''''Glaucidium''''' is a [[genus]] of plants in [[family (biology)|family]] [[Ranunculaceae]], comprising a single species '''''Glaucidium palmatum''''' ('''Japanese Wood Poppy'''; ''Shirane-aoi''). It is [[endemism|endemic]] to northern and eastern [[Japan]] on [[Hokkaidō]] and northeastern [[Honshū]] on mountains close to the [[Sea of Japan]].<ref name=>Shiro Tsuyuzaki, Hokkaido University:
[http://hosho.ees.hokudai.ac.jp/~tsuyu/plants/gla_pal.html Japanese Wood Poppy]</ref><ref name=grin>Germplasm Resources Information Network: [http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?4974 ''Glaucidium'']</ref>
It is a [[rhizome|rhizomatous]] [[herbaceous]] [[perennial plant]] growing to 40 cm tall with a rigid stem with two large (20 cm diameter) palmately lobed [[leaf|leaves]] at the top and small membraneous leaves lower on the stem. The [[flower]] is produced singly at the top of the stem, 8 cm diameter, with four pink to pale purple (rarely white) petaloid sepals, numerous stamens and two carpels. The [[fruit]] is a cluster of [[follicle (fruit)|follicles]].<ref name=rhs>Huxley, A., ed. (1992). ''New RHS Dictionary of Gardening''. Macmillan ISBN 0-333-47494-5.</ref>
It is sometimes placed in its own family Glaucidiaceae, or in the family [[Paeoniaceae]].<ref name=grin/>
==Cultivation==
==Cultivation==