Taxon Details
Calycadenia villosa
dwarf calycadenia
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© 2015 David Wolfson |
© 2015 David Wolfson |
© 2011 Chris Winchell |
Taxon Summary:
Calycadenia villosa, commonly known as dwarf calycadenia, is a annual herb in the Asteraceae that is found only in California. It occurs within Chaparral, Cismontane woodland, Meadows and seeps, and Valley and foothill grassland, growing at elevations from 240 to 1350 meters. Calycadenia villosa is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Calycadenia villosa DC. |
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Common Name: dwarf calycadenia |
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| Family: | Asteraceae | |
| Element Code: | PDAST1P0B0 | |
| USDA Plants Symbol: | CAVI | |
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Synonyms/Other Names: |
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| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G3 |
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State Rank: |
S3 |
| Other Status: | BLM_S; SB_SBBG; USFS_S |
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CRPR Changes: |
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| Add Date: | 1994-01-01 |
| Date Edited: | 2024-11-05 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: May-Oct
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Elevation:
240 - 1350 meters 785 - 4430 feet |
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General Habitats:
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| Microhabitat Details: fine soils | ||||||||||||||
Microhabitat:
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Notes: Probably consists of northern and southern unrecognized subspecies. Habitat lost to construction of San Antonio Reservoir; also threatened by urbanization, vehicles, grazing, feral pigs, alteration of fire regimes, road construction, road maintenance, and non-native plants. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 16 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 49 | 83 % |
| THREAT LIST: | ||
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| ORV activity | 29 | 49% |
| Grazing | 22 | 37% |
| Road/trail construction/maint. | 12 | 20% |
| Other | 9 | 15% |
| Feral pigs | 9 | 15% |
| Military operations | 8 | 13% |
| Non-native plant impacts | 8 | 13% |
| Improper burning regime | 7 | 11% |
| Foot traffic/trampling | 2 | 3% |
| Development | 2 | 3% |
| Erosion/runoff | 1 | 1% |
| Agriculture | 1 | 1% |
| Dam/Inundation | 1 | 1% |
| Vandalism/dumping/litter | 1 | 1% |
| Mining | 1 | 1% |
| Recreational use (non-ORV) | 1 | 1% |
| Total Occurrences: | 59 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 2 | 38 | 3 | 0 | 1 | 15 |
| Occurrence Status: | |||||
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| Historical >20 Years | 55 | ||||
| Recent <=20 Years | 4 | ||||
| Presence: | |||||
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| Presumed Extant | 58 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 1 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Monterey (MNT), San Luis Obispo (SLO) |
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Quads: Name (Quad Code) Adelaida (3512067)*, Alder Peak (3512183), Bear Canyon (3612113), Bradley (3512077), Bryson (3512171), Burnett Peak (3512172), Burro Mountain (3512173), Camatta Ranch (3512043), Cosio Knob (3612112), Creston (3512055), Hames Valley (3512088), Jolon (3512182), La Panza (3512032), La Panza Ranch (3512042)*, Lime Mountain (3512068), Pebblestone Shut-in (3512161), Tierra Redonda Mountain (3512078)*, Williams Hill (3512181) |
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Notes:
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Presumed Extant
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