{{Short description|Species of flowering plant native to Hawaii}} {{Speciesbox | image = Cyanea horrida.jpg | status = CR | status_system = IUCN3.1 | status_ref = <ref name=iucn>{{cite iucn |author=Bruegmann, M.M. |author2=Caraway, V. |year=2003 |title=''Cyanea horrida'' |article-number=e.T33582A9788344 |doi=10.2305/IUCN.UK.2003.RLTS.T33582A9788344.en |language=en}}</ref> | status2 = G2 | status2_system = TNC | status2_ref = <ref name=TNC>{{cite NatureServe |title=''Cyanea horrida'' Prickly Cyanea |id=2.135636 |date=1 May 2026 |access-date=16 May 2026}}</ref> | genus = Cyanea | species = horrida | authority = (Rock) O.Deg. & Hosaka<ref name=GBIF>{{GBIF |title=''Cyanea horrida'' (Rock) O.Deg. & Hosaka |id=5412130 |access-date=16 May 2026}}</ref> | synonyms = {{species list |Cyanea ferox var. horrida |Rock |Cyanea lobata var. hamakuae |Rock |Delissea horrida |(Rock) H.St.John |Delissea kipahuluensis |H.St.John |Delissea lobata var. hamakuae |(Rock) H.St.John }} | synonyms_ref = <ref name=GBIF/> }} '''''Cyanea horrida''''', the '''prickly cyanea''' or '''hāhā nui''', is a small, prickly tree from the Campanulaceae family which grows roughly {{cvt|1-3|m|ft}} which is endemic to east Maui.<ref name=":1">{{Cite web |title=Prickly Cyanea (Cyanea horrida) {{!}} U.S. Fish & Wildlife Service |url=https://www.fws.gov/species/prickly-cyanea-cyanea-horrida |access-date=2026-05-17 |publisher=USFWS |language=en}}</ref> It is critically endangered with an unknown amount of specimens currently in existence.<ref name=iucn/> ''C. horrida'' is pollinated by honeycreeper birds.<ref name=UFWS/>
== Habitat == ''Cyanea horrida'' is found in high-altitude rainforests and cliffs, above {{cvt|1500|m}} in elevation, in an approximately {{cvt|13,934|ha}} area along the slopes of Haleakalā, mostly in the east-to-northeast regions.<ref name=UFWS>{{cite report |url=https://ecos.fws.gov/docs/recovery_plan/Cyanea_horrida_Species_Report_Final.pdf |title=Species Report ''Cyanea horrida'' (holokea) |publisher=USFWS |date=February 2023}}</ref>
== Description == ''Cyanea horrida'' is small, only {{cvt|1-3|m|ft}} in height, with "palm-like" fronds for leaves which are pinnately parted or divided, approximately 20-37 centimeters long and {{cvt|10-19|cm}} wide. The flowers come in inflorescences of 5-8, with purple flowers, yielding yellow berries. Most parts of the plant, including leaves and trunk, are covered in small protrusions.<ref name=":1" />
== References == {{reflist}}
== External links ==
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{{Taxonbar|from=Q15553272}}
horrida Category:Plants described in 1917
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