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{{Short description|Species of flowering plant}}
{{Speciesbox
|image = Pink star-tulip imported from iNaturalist photo 265605853 on 2 May 2024.jpg
|genus = Calochortus
|species = uniflorus
|authority = [[William Jackson Hooker|Hook.]] & [[George Arnott Walker-Arnott|Arn.]] 1840 not Hook. f. 1869
|synonyms_ref = <ref>[http://apps.kew.org/wcsp/synonomy.do?name_id=301788 Kew World Checklist of Selected Plant Families]</ref>
|synonyms = *''Cyclobothra uniflora'' (Hook. & Arn.) Kunth
* ''Calochortus lilacinus'' Kellogg
* ''Calochortus uniflorus'' Hook.f.
}}

'''''Calochortus uniflorus''''' is a species of flowering plant in the [[Liliaceae|lily family]] known by the common names '''Monterey mariposa lily''' and '''large-flowered star-tulip'''.<ref>[https://www.biodiversitylibrary.org/page/404463#page/495/mode/1up Hooker, William Jackson & Arnott, George Arnott Walker 1840. Botany of Captain Beechey's Voyage 398] description in Latin, commentary in English</ref><ref>[https://www.biodiversitylibrary.org/page/404463#page/496/mode/1up Hooker, William Jackson & Arnott, George Arnott Walker 1840. Botany of Captain Beechey's Voyage 398] line drawing of ''Calochortus uniflorus''</ref><ref>[http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?8349,8461,8509 Jepson Manual Treatment of ''Calochortus uniflorus'']</ref> It is native to western [[Oregon]] and to [[California]] as far south as [[San Luis Obispo County]]. It grows in moist areas, such as meadows, in coastal hills and lower-elevation mountains. Most of the populations are found in the [[Coast Ranges]], but some occur in the [[Cascade Range|Cascades]] and in the foothills of the [[Sierra Nevada (U.S.)|Sierra Nevada]].<ref>[http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Calochortus+uniflorus Calflora taxon report, ''Calochortus uniflorus'' Hook. & Arn. large flowered star tulip ]</ref><ref>[http://bonap.net/MapGallery/County/Calochortus%20uniflorus.png Biota of North America Program 2014 county distribution map]</ref>

''Calochortus uniflorus'' is a [[Perennial plant|perennial]] [[Herbaceous plant|herb]] producing a short, unbranching stem typically less than 5 centimeters tall. The basal leaf is up to 40 centimeters long and does not wither by flowering; there may be one or more shorter leaves higher up the stem. The [[inflorescence]] is a loose cluster of 1 to 5 upright, bell-shaped flowers. Each flower has three [[petal]]s up to about 3 centimeters long and three shorter [[sepal]]s beneath. The petals are white to pink and may have purple spotting near the bases. The fruit is a [[Capsule (fruit)|capsule]] up to 2.5 centimeters long.<ref>[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242101502 Flora of North America, ''Calochortus uniflorus'']</ref>

==References==
{{Reflist}}

==External links==
*[https://plants.usda.gov/java/profile?symbol=CAUN United States Department of Agriculture Plants Profile for ''Calochortus uniflorus'']
*[http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Calochortus+uniflorus Calphotos Photos gallery, University of California: ''Calochortus uniflorus'']
{{Commons category|Calochortus uniflorus|position=left}}

{{Taxonbar|from=Q5023126}}

[[Category:Calochortus|uniflorus]]
[[Category:Flora of California]]
[[Category:Flora of Oregon]]
[[Category:Natural history of the California Coast Ranges]]
[[Category:Plants described in 1840]]
[[Category:Flora without expected TNC conservation status]]

{{Liliales-stub}}

Calochortus uniflorus - Revision history

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