Taxon Report
Proboscidea althaeifolia (Benth.) Dcne.desert unicorn-plant |
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Taxon Summary
Proboscidea althaeifolia, commonly known as desert unicorn-plant, is a perennial herb in the Martyniaceae that is found in California and elsewhere. It occurs within Sonoran desert scrub, growing at elevations from 85 to 1000 meters. Proboscidea althaeifolia is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.Classification
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Scientific Name: |
Proboscidea althaeifolia (Benth.) Dcne. |
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Common Name: |
desert unicorn-plant |
| Family: | Martyniaceae |
| Element Code: | PDPED06010 |
| USDA Plants Symbol: | PRAL4 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: May-Sep(Oct) | May-Sep(Oct) |
| Elevation: | 85-1000 (280-3280) |
| General Habitats: | Sonoran desert scrub |
| Microhabitat: | Flats, Roadsides (sometimes), Sandy, Slopes, Washes |
| Microhabitat Details: | gently sloping sandy flats and washes |
Conservation Status
| CA Rare Plant Rank: | 4.3 |
| Global Rank: | G5 |
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State Rank: |
S4 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 0 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 0 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Imperial (IMP), Riverside (RIV), San Bernardino (SBD), San Diego (SDG) | |
| Quads: Name (Quad Code) | |
| Agua Caliente Springs (3211683), Arroyo Tapiado (3211682), Carrizo Mtn. (3211671), Chuckwalla Spring (3311542), Corn Spring (3311563), Cross Roads (3411422), Desert Center (3311564), East of Aztec Mines (3311551), East of Victory Pass (3311573), Ford Dry Lake (3311561), Hayfield Spring (3311565), Hopkins Well (3311458), Little Chuckwalla Mts. (3311541), McCoy Peak (3311467), McCoy Spring (3311468), McCoy Wash (3311466), Palo Verde (3311446), Rice (3411417), Ripley (3311456), Roosevelt Mine (3311457), Savahia Peak NW (3411446), Snaggletooth (3411456), Styx (3311487), Sweeney Pass (3211672), Thumb Peak (3311447), Victory Pass (3311574) | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | 0 % | |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 12 March 2025].