Cyanea st.-johnii

{{Short description|Species of flowering plant}}

{{Speciesbox

|image =

|status = CR

|status_system = IUCN3.1

|status_ref =

|genus = Cyanea

|species = st.-johnii

|authority = (Hosaka) Lammers, Givnish & Sytsma

|synonyms = Rollandia st.-johnii

}}

Cyanea st.-johnii (formerly Rollandia st.-johnii) is a rare species of flowering plant in the bellflower family known by the common name St. John's rollandia. It is endemic to Oahu, where it is known only from the Koʻolau Mountains.USFWS. [http://ecos.fws.gov/docs/five_year_review/doc1130.pdf Cyanea st.-johnii Five-year Review.] August 2007. It is a federally listed endangered species of the United States. Like other Cyanea it is known as haha in Hawaiian.[http://ecos.fws.gov/tess_public/pub/listedPlants.jsp USFWS Species Profile: Listed Plants]

A 2007 report estimates 70 remaining individuals divided among seven occurrences in the upper elevations of the Koʻolau Mountains. The plant grows on top of ridges, in open, windy habitat within the cloud zone.[http://www.natureserve.org/explorer/servlet/NatureServe?searchName=Cyanea+st.-johnii Cyanea st.-johnii.] The Nature Conservancy. The occurrences have been separated and isolated by habitat fragmentation.Bruegmann, M. M. & V. Caraway. (2003). [http://www.iucnredlist.org/apps/redlist/details/44052/0 Cyanea st.-johnii]. IUCN Red List of Threatened Species. IUCN 2010. [http://www.iucnredlist.org www.iucnredlist.org] {{webarchive |url=https://web.archive.org/web/20140627094911/http://www.iucnredlist.org/ |date=June 27, 2014 }}. Retrieved on 28 February 2011.

This Hawaiian lobelioid is a shrub growing 30 to 60 centimeters tall and producing white flowers.