Calochortus monanthus - Ownbey
Single-flowered Mariposa Lily
Taxonomic Status: Accepted
Related ITIS Name(s): Calochortus monanthus Ownbey (TSN 42859)
Unique Identifier: ELEMENT_GLOBAL.2.129512
Element Code: PMLIL0D0W0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Lily Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Monocotyledoneae Liliales Liliaceae Calochortus
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Concept Reference
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Concept Reference: Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Calochortus monanthus
Conservation Status
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NatureServe Status

Global Status: GH
Global Status Last Reviewed: 07Aug2003
Global Status Last Changed: 14Jun1990
Rounded Global Status: GH - Possibly Extinct
Reasons: Collected only once, in 1876 in Siskiyou County in northern California. Most of the area is now agricultural. A rediscovery attempt in 1990 was unsuccessful.
Nation: United States
National Status: NH

U.S. & Canada State/Province Status
United States California (SH)

Other Statuses

NatureServe Global Conservation Status Factors

Number of Occurrences: 1 - 5
Number of Occurrences Comments: Only known from the type location in 1876 along the Shasta River in Sisiyou Co., however, the occurrence is no longer extant. Rediscovery attempts have been made, but have been unsuccessful (CNPS 2001).

Overall Threat Impact Comments: Habitat has been converted to agriculture. The only known occurrence is historic (CNPS 2001).

Other NatureServe Conservation Status Information

Distribution
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U.S. States and Canadian Provinces
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States CA

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
CA Siskiyou (06093)*
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
18 Shasta (18010207)+*
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A perennial herb from an underground bulb. Bears a single flower at the top of an erect stem. The flower petals (each about 4.5 cm long) are pinkish with a chevron-shaped dark red spot above each nectar-secreting gland. Known to have bloomed in June.
Habitat Comments: A vernal meadow along a river at about 800 m elevation.
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 06Jun1997
NatureServe Conservation Status Factors Author: Maybury, K. (1997), rev. L. Oliver (2003)

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
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  • California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.

  • Flora of North America Editorial Committee. 2002a. Flora of North America North of Mexico. Vol. 26. Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York. xxvi + 723 pp.

  • Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.

  • Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

  • Munz, P.A., with D.D. Keck. 1959. A California flora. Univ. California Press, Berkeley. 1681 pp.

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