© 2004 Dean Wm. Taylor |
© 2004 Dean Wm. Taylor |
© 2015 Adrienne Simmons |
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Scientific Name: Montia howellii Wats. |
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Common Name: Howell's montia |
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| Family: | Montiaceae | |
| Element Code: | PDPOR05070 | |
| USDA Plants Symbol: | MOHO | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 2B.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G3G4 |
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State Rank: |
S2 |
| Other Status: | |
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CRPR Changes: changed from 2B.2 to 2B.2 on 2020-11-19 changed from 2.2 to 2B.2 on 2006-04-17 |
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| Add Date: | 1994-01-01 |
| Date Edited: | 2022-04-05 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: (Feb)Mar-May
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Elevation:
0 - 835 meters 0 - 2740 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: Rediscovered in CA in 1999 by Clare Golec. Did plant occur in DNT Co.? Candidate for state listing in OR. |
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Threats: Threatened by logging, road construction, road maintenance, vehicles, and competition. Possibly threatened by non-native plants. |
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Taxonomy: Sometimes mistaken for M. fontana or M. dichotoma. |
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| Threat List Total: | 14 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 109 | 89 % |
| THREAT LIST: | ||
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| Road/trail construction/maint. | 87 | 70% |
| Logging | 79 | 64% |
| Other | 30 | 24% |
| Grazing | 15 | 12% |
| Foot traffic/trampling | 14 | 11% |
| Non-native plant impacts | 12 | 9% |
| ORV activity | 11 | 8% |
| Altered flood/tidal/hydrologic regime | 6 | 4% |
| Surface water diversion | 5 | 4% |
| Wood cutting or brush clearing | 3 | 2% |
| Vandalism/dumping/litter | 2 | 1% |
| Biocides | 2 | 1% |
| Erosion/runoff | 2 | 1% |
| Recreational use (non-ORV) | 2 | 1% |
| Total Occurrences: | 123 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 11 | 55 | 32 | 12 | 6 | 7 |
| Occurrence Status: | |||||
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| Historical >20 Years | 22 | ||||
| Recent <=20 Years | 101 | ||||
| Presence: | |||||
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| Presumed Extant | 117 | ||||
| Possibly Extirpated | 5 | ||||
| Presumed Extirpated | 1 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA), Oregon (OR), Washington (WA) |
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California Counties and Islands: Name (Code) Del Norte (DNT), Humboldt (HUM), Trinity (TRI) |
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Quads: Name (Quad Code) Arcata North (4012481), Arcata South (4012471), Bald Hills (4112328), Blocksburg (4012336), Briceland (4012318)*, Bridgeville (4012347), Broken Rib Mtn. (4112386), Buckeye Mtn. (4012432), Bull Creek (4012431), Capetown (4012443), Eureka (4012472), Ferndale (4012453), Fields Landing (4012462), Fort Seward (4012326), Fortuna (4012452), French Camp Ridge (4112327), Harris (4012316), Hennessy Peak (4012375), High Divide (4112481), Hupa Mountain (4112317), Hydesville (4012451), Iaqua Buttes (4012368), Ironside Mtn. (4012374), Korbel (4012378), Larabee Valley (4012346), Lord-ellis Summit (4012387), Mad River Buttes (4012367), Maple Creek (4012377), McWhinney Creek (4012461), Miranda (4012327)*, Myers Flat (4012337), Orick (4112431), Owl Creek (4012358), Panther Creek (4112318), Redcrest (4012348), Salyer (4012385)*, Scotia (4012441), Taylor Peak (4012442), Weitchpec (4112326), Willow Creek (4012386), Yager Junction (4012357) |
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Notes:
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Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel
| CNPS Status Review: | Proposed Change from California Rare Plant Rank 2 to 4.2 |
| CNPS Status Review: | Proposed Change from California Rare Plant Rank 2B.2, G3G4 / S2 to 4.3, G4 / S3 |
| Original Description: |
Proceedings of the American Academy of Arts and Sciences 18:191 (1883) |
| Species Account: |
Montia howellii profile for potential Species of Conservation Concern evaluation (2022) |
| Other: | USFS Potential Species of Conservation Concern Profile |