{{short description|Species of plant}} {{Speciesbox | image = Platanthera_Cooperi.jpg | genus = Platanthera | species = cooperi | authority = (S.Watson) R.M.Bateman }}

'''''Platanthera cooperi''''' is an uncommon species of orchid known by the common names '''Cooper's rein orchid''' and '''chaparral rein orchid'''.

==Distribution== The orchid is endemic to chaparral, coastal sage scrub, and oak woodland habitats. It is native to southern California and the border area in Baja California.

It is found in the Santa Monica Mountains, Simi Hills, and San Gabriel Mountains of the Transverse Ranges; Santa Catalina Island and San Clemente Island of the Channel Islands, and the Santa Ana Mountains and Cuyamaca Mountains of the Peninsular Ranges.<ref>[http://www.calflora.org/cgi-bin/species_query.cgi?where-calrecnum=6530 Calflora Distribution map of ''Piperia cooperi'']</ref>

==Description== ''Platanthera cooperi'' grows erect to about {{convert|90|cm|in}} in maximum height from a bulbous caudex. The basal leaves are up to 20 centimeters long by 3&nbsp;cm wide. Leaves higher on the stem are much reduced.

The upper part of the stem is a spikelike inflorescence of many small green flowers, which are honey-scented in the evenings. Its bloom period is from March to June.

==Conservation== This orchid is a listed vulnerable species on the California Native Plant Society Inventory of Rare and Endangered Plants.<ref>[http://www.rareplants.cnps.org California Native Plant Society Inventory of Rare and Endangered Plants (online edition, v8-02)] . accessed 23 January 2016.</ref>

==References== {{Reflist}}

==External links== * [http://www.calflora.org/cgi-bin/species_query.cgi?where-calrecnum=6530 Calflora Database: ''Piperia cooperi'' (Cooper's rein orchid)] * [https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=76517 Jepson Manual eFlora (TJM2) treatment of ''Piperia cooperi''] * [https://plants.usda.gov/java/profile?symbol=PICO9 USDA Plants Profile for ''Piperia cooperi''] * [http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242101817 Flora of North America] * [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Piperia+cooperi UC Photos gallery — ''Piperia cooperi'']

{{Taxonbar|from1=Q7197344|from2=Q19848324}}

cooperi Category:Orchids of California Category:Orchids of Mexico Category:Flora of Baja California Category:Natural history of the California chaparral and woodlands Category:Natural history of the Channel Islands of California Category:Natural history of the Peninsular Ranges Category:Natural history of the Santa Monica Mountains Category:Natural history of the Transverse Ranges Category:Flora without expected TNC conservation status

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