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
Table of Occurrences
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