ITIS Basic Information
Common Name: Dunn's Mariposa Lily
Scientific Name: Calochortus dunnii
Species Code:
Management Category: VG (species not specifically managed for, but may benefit from vegetation management for VF species)
Occurrence Map

Historically present
Currently present
Currently not detected
Table of Occurrences
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File name Lead Author Year Type
DRAFT EXISTING CONDITIONS REPORT for the OTAY RANCH PRESERVE 2009 report

Current Distribution Rangewide

Ranges from San Diego County to Baja California, Mexico [1,2].

Known Populations in San Diego County

Occurrences found in MU 3 (San Diego National Wildlife Refuge, Otay Ranch Preserve, BLM), MU 4 (Cleveland National Forest), MU 10 (Cleveland National Forest, Cuyamaca Rancho State Park), and MU 11 (Cleveland National State Forest).

List Status

State listed Rare [3].

Habitat Affinities

Found in closed-cone coniferous forest, chaparral, valley and foothill grassland communities. Gabbroic or metavolcanic, rocky soils. [1,2].

Taxonomy and Genetics

In the Liliaceae family [1,4].

Life History Demography

A perrenial bulbiferous herb [1,4].

Seasonal Phenology

Blooms from April to June [1,4].

Pollination Seed Dispersal

No information.

Threats

Threatened by development, nonnative plants, and vehicles [1].

Literature Sources

[1] California Native Plant Society, Rare Plant Program. 2017. Inventory of Rare and Endangered Plants of California (online edition, v8-03 0.39). Website http://www.rareplants.cnps.org [accessed 28 September 2017].

[2] NatureServe. 2017. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available http://explorer.natureserve.org. (Accessed: September 28, 2017 ).

[3] State and Federally Listes Endagered, Threatened, and Rare Plants of California. 2017. California Department of Fish and Wildlife.

[4] "Calochortus dunnii." 2017. CalFlora. http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Calochortus+dunnii