Physocarpus
3879965
220913194
2008-06-22T05:11:39Z
JerryFriedman
35055
+ image of bark
{{Taxobox
| name = ''Physocarpus''
| image = Physocarpus opulifolius USFWS.jpg
| image_width = 240px
| image_caption = ''Physocarpus opulifolius''
| regnum = [[Plant]]ae
| divisio = [[flowering plant|Magnoliophyta]]
| classis = [[dicotyledon|Magnoliopsida]]
| ordo = [[Rosales]]
| familia = [[Rosaceae]]
| subfamilia = [[Spiraeoideae]]
| genus = '''''Physocarpus''''' [[Carl Maximowicz|Maxim.]]
| subdivision_ranks = Species
| subdivision =
See text<br/>
}}
'''''Physocarpus''''' ('''Ninebark''') is a genus of about ten species of [[flowering plant]]s in the family [[Rosaceae]], native to [[North America]] (most of the species) and northeastern [[Asia]] (one species).
They are [[deciduous]] [[shrub]]s growing to 1-3 m tall. The name comes from the appearance of the [[bark]], which is flaky, peeling away in many layers. The [[leaf|leaves]] are [[maple]]-like, palmately lobed, 3-15 cm long and broad, with an irregularly serrated margin. The [[flower]]s are white with five petals and numerous stamens, produced in [[corymb]]s. The [[fruit]] is a cluster of inflated [[follicle (fruit)|follicles]], which turn dry and brown and then split open to release the seeds.
;Selected species
*''[[Physocarpus alternans]]'' ('''Dwarf Ninebark''')
*''[[Physocarpus amurensis]]'' ('''Asian Ninebark''')
*''[[Physocarpus bracteatus]]''
*''[[Physocarpus capitatus]]'' ('''Pacific Ninebark''')
*''[[Physocarpus glabratus]]''
*''[[Physocarpus malvaceus]]'' ('''Mallow Ninebark''')
*''[[Physocarpus monogynus]]'' ('''Mountain Ninebark''')
*''[[Physocarpus opulifolius]]'' ('''Common Ninebark''')
==External links==
*[http://plants.usda.gov/java/profile?symbol=PHYSO USDA Plants Profile: ''Physocarpus'']
*[http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?Physocarpus Jepson Flora Project: ''Physocarpus'']
*[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=125317 Flora of China: ''Physocarpus'']
[[Image:Physocarpus monogynus bark1.jpg|thumb|left|Bark of ''Physocarpus monogynus'']]
[[Category:Rosaceae]]
[[da:Blærespiræa]]
[[es:Physocarpus]]
[[pl:Pęcherznica]]
[[pt:Physocarpus]]