Species Details
Calystegia peirsonii
Peirson's morning-glory
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Species Description:
Calystegia peirsonii, commonly known as Peirson's morning-glory, is a perennial rhizomatous herb in the Convolvulaceae that is found only in California. It occurs within Chaparral, Chenopod scrub, Cismontane woodland, Coastal scrub, Lower montane coniferous forest, and Valley and foothill grassland, growing at elevations from 30 to 1500 meters. Calystegia peirsonii is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.|
Scientific Name: Calystegia peirsonii (Abrams) Brummitt |
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Common Name: Peirson's morning-glory |
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| Family: | Convolvulaceae | |
| Element Code: | PDCON040A0 | |
| USDA Plants Symbol: | CAPE18 | |
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Synonyms/Other Names: |
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| Name Status: |
JEP, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 4.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G4 |
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State Rank: |
S4 |
| Other Status: | |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2021-05-26 |
| Lifeform: perennial rhizomatous herb | ||||||||||||||
Blooming Period: Apr-Jun
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Elevation:
30 - 1500 meters 100 - 4920 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Threatened by grazing and development. Possibly threatened by powerline construction. Intergrades with other Calystegia spp. See Illustrated Flora of the Pacific States 3:387 (1951) by L. Abrams for original description, and Annals of the Missouri Botanical Garden 52(2):214-216 (1965) for revised nomenclature. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 1 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 2 | 8 % |
| THREAT LIST: | ||
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| Grazing | 2 | 7% |
| Total Occurrences: | 26 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 5 | 14 | 3 | 0 | 0 | 4 |
| Occurrence Status: | |||||
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| Historical >20 Years | 26 | ||||
| Recent <=20 Years | 0 | ||||
| Presence: | |||||
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| Presumed Extant | 26 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Kern (KRN), Los Angeles (LAX), Ventura (VEN) |
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Quads: Name (Quad Code) Agua Dulce (3411843), Black Mtn. (3411867), Burnt Peak (3411865), Del Sur (3411863), Green Valley (3411854), Lake Hughes (3411864), Lancaster West (3411862), Lebec (3411877), Liebre Mtn. (3411866), Littlerock (3411758), Mescal Creek (3411746), Mint Canyon (3411844), Newhall (3411845), Oat Mountain (3411835), Pacifico Mountain (3411841), Palmdale (3411851), Ritter Ridge (3411852), San Fernando (3411834), Santa Paula (3411931), Santa Susana (3411836), Sleepy Valley (3411853), Torrance (3311873), Tylerhorse Canyon (3411884), Val Verde (3411846), Valyermo (3411747), Warm Springs Mountain (3411855), Whitaker Peak (3411856) |
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Notes:
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Presumed Extant
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