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Taxon  Report  
Diplacus vandenbergensis  (D.M. Thomps.) G.L. Nesom
Vandenberg monkeyflower
Diplacus vandenbergensis is an annual herb that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).
Federal status: Endangered.
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Observation Search
(36 records)
yellowone or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Genus: Diplacus
Family: Phrymaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Name Status:
Accepted by JEF + CNPS

Alternate Names:
JEF + CNPSMimulus fremontii var. vandenbergensis
Information about  Diplacus vandenbergensis from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

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[Wikipedia] Range, Description, Habitat, Threats: Diplacus vandenbergensis, commonly known as the Vandenberg monkeyflower, is a species of Diplacus located in the Phrymaceae family.[2] It grows as a small herbaceous annual plant and is native to the Burton Mesa Ecological Reserve in Santa Barbara County, California.[3] According to the U.S. Fish and Wildlife Service it is an endangered species and hence was allocated critical habitat within the reserve in 2014.[4] Description This annual plant grows roughly to a height of 20 cm (8 in) before it releases seeds and dies. The leaves are 2 to 30 mm (0.08 to1 in) long and are generally narrowly elliptic in shape. The yellow flowers emerge between May and June, with the pedicel being 1 to 4 mm long and the calyx 5 to 14 mm. The tube/throat of the flower is 9 to 23 mm long. The fruit is 6.5 to 13 mm long.[2] Habitat The primary habitats of this species are chaparral, cismontane woodlands and coastal dunes.[3] It grows in sandy soil between larger shrubs where it receives increased protection from external threats such as wind and animals. Influx of these small areas by invasive plant species such as Pampas grass, Veldt grass and Iceplant pose the greatest risk to this species.[5] It is also threatened by development and off-road vehicles.[3] (contributed by Mary Ann Machi)

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 12/01/2023).