Species Details
Chorizanthe robusta var. robusta
robust spineflower
Download Report Calflora eFlora CCH CalPhotos
|
|
Scientific Name: Chorizanthe robusta Parry var. robusta |
||
|
Common Name: robust spineflower |
||
| Family: | Polygonaceae | |
| Element Code: | PDPGN040Q2 | |
| USDA Plants Symbol: | CHROR | |
|
Synonyms/Other Names: |
||
| CA Rare Plant Rank: | 1B.1 |
| Fed List: | FE (1994-02-04) |
| State List: | None |
| Global Rank: | G2T1 |
|
State Rank: |
S1 |
| Other Status: | |
|
CRPR Changes: |
|
| Add Date: | 1980-01-01 |
| Date Edited: | 2021-11-05 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: Apr-Sep
|
||||||||||||||
|
Elevation:
3 - 300 meters 10 - 985 feet |
||||||||||||||
General Habitats:
|
||||||||||||||
| Microhabitat Details: | ||||||||||||||
Microhabitat:
|
||||||||||||||
|
Notes: Most populations extirpated, and now known from only six extended occurrences. Threatened by development, recreation, mining, and non-native plants. See C. robusta in The Jepson Manual. See Phytologia 66(2):130-131 (1989) for taxonomic treatment, and Fremontia 24(4):8-11 (1996) for taxonomic discussion. |
|
|
Threats: |
|
|
Taxonomy: |
|
| Threat List Total: | 8 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 16 | 80 % |
| THREAT LIST: | ||
|---|---|---|
| Development | 7 | 35% |
| Non-native plant impacts | 5 | 25% |
| Recreational use (non-ORV) | 5 | 25% |
| Other | 3 | 15% |
| Road/trail construction/maint. | 2 | 10% |
| Wood cutting or brush clearing | 1 | 5% |
| ORV activity | 1 | 5% |
| Logging | 1 | 5% |
| Total Occurrences: | 20 | ||||
| Element Occurrence Ranks: | |||||
|---|---|---|---|---|---|
| A | B | C | D | X | U |
| 2 | 5 | 2 | 0 | 5 | 6 |
| Occurrence Status: | |||||
|---|---|---|---|---|---|
| Historical >20 Years | 10 | ||||
| Recent <=20 Years | 10 | ||||
| Presence: | |||||
|---|---|---|---|---|---|
| Presumed Extant | 15 | ||||
| Possibly Extirpated | 5 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
|
States: Name (Code) California (CA) |
|||||||||||||
|
California Counties and Islands: Name (Code) Alameda (ALA)*, San Francisco (SFO), San Mateo (SMT)*, Santa Clara (SCL)*, Santa Cruz (SCR) |
|||||||||||||
|
Quads: Name (Quad Code) Calaveras Reservoir (3712147), Felton (3712211), Laurel (3712118)*, Los Gatos (3712128)*, Milpitas (3712148), Moss Landing (3612177), Oakland East (3712272)*, Oakland West (3712273), San Francisco South (3712264)*, San Jose East (3712137), San Jose West (3712138)*, San Leandro (3712262), Santa Cruz (3612281), Soquel (3612188), Watsonville West (3612187) |
|||||||||||||
Notes:
|
|||||||||||||
Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel