Taxon Report
Calochortus persistens OwnbeySiskiyou mariposa-lily |
 ©2014 Scot Loring |
Classification
|
Scientific Name: |
Calochortus persistens Ownbey |
|
Common Name: |
Siskiyou mariposa-lily |
| Family: | Liliaceae |
| Element Code: | PMLIL0D140 |
| USDA Plants Symbol: | CAPE |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial bulbiferous herb |
| Blooming Period: Jun-Jul | Jun-Jul |
| Elevation: | 1000-1860 (3280-6105) |
| General Habitats: | Lower montane coniferous forest, North Coast coniferous forest |
| Microhabitat: | Acidic, Rocky |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
|
State Rank: |
S2 |
| State List: | CR |
| Fed List: | None |
| Other Status: | BLM_S; SB_BerrySB; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 8 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 4 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 3 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Siskiyou (SIS) | |
| Quads: Name (Quad Code) | |
| Badger Mtn. (4112276), Cottonwood Peak (4112286), Gazelle Mtn. (4112246), Hornbrook (4112285), Indian Creek Baldy (4112267), McKinley Mtn. (4112277), Yreka (4112266) | |
Threat List Data from the CNDDB
| Threat List Total: | 10 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 4 | 50 % | |
| Logging | 3 | 37% |
| Non-native plant impacts | 3 | 37% |
| Non-native animal impacts | 2 | 25% |
| ORV activity | 1 | 12% |
| Other | 1 | 12% |
| Over-collecting/poaching | 1 | 12% |
| Road/trail construction/maint. | 1 | 12% |
| Mining | 1 | 12% |
| Foot traffic/trampling | 1 | 12% |
| Improper burning regime | 1 | 12% |
Notes
| Threatened by non-native plants, habitat disturbance, road construction, horticultural collecting, grazing, and alteration of fire regimes. As of 2002, no successful reproduction observed in past five years. Klamath NF has adopted species management guidelines. Previously a candidate for federal listing. See Annals of the Missouri Botanical Garden 27:448 (1940) for original description. |
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Threats: |
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Taxonomy: |
Selected References
| Calochortus persistens account for potential Species of Conservation Concern evaluation (2022) |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 2 January 2025].