CPC Plant Profile: Coastal Dunes Milkvetch
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Plant Profile

Coastal Dunes Milkvetch (Astragalus tener var. titi)

Description
  • Global Rank: T1 - Critically Imperiled
  • Legal Status: Federally Endangered
  • Family: Fabaceae
  • State: CA
  • Nature Serve ID: 156430
  • Date Inducted in National Collection: 02/10/1987

annual herb

Participating Institutions
Updates
  • 09/01/2020
  • Orthodox Seed Banking

Based on an September 2020 extract of the California Plant Rescue Database, University of California Botanical Garden holds 1 accessions of Astragalus tener var. titi in orthodox seed collection. We are uncertain as to how many total seeds are in this collection.

  • 09/01/2020
  • Orthodox Seed Banking

Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 5 accessions of Astragalus tener var. titi in orthodox seed collection. There are as many as 4361 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

  • 08/05/2020
  • Seed Collection

Based on an August 2020 extract of the California Plant Rescue Database, University of California Botanical Garden has collected 1 seed accessions of Astragalus tener var. titi from 1 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass an unknown number of maternal plants

  • 08/05/2020
  • Seed Collection

Based on an August 2020 extract of the California Plant Rescue Database, California Botanic Garden has collected 5 seed accessions of Astragalus tener var. titi from 2 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 247 maternal plants

Nature Serve Biotics
  • 05/02/2017

Currently presumed extant at only one site on the Monterey Peninsula in California. Historical locations from Los Angeles and San Diego counties are known, but repeated searches have failed to relocate them and very little, if any, suitable habitat remains in these areas due to heavy urbanization, naval amphibious vehicle training exercises, and recreational development. One extant population varies greatly in size from year to year. It has been bisected by a road (which may have altered the local hydrology) and is now sandwiched between a horse trail that runs next to a golfing green and the edge of the ocean bluffs. These remaining plants face threats from trampling by hikers, picnickers and others, and from agressive, rapidly spreading non-native plant species. The remaining site is not protected.

  • 01/01/2010

threatened by one or more of the following: alteration, destruction, and fragmentation of habitat resulting from urban and golf course developemtn; recreationsl activities; highway widening; military activities, competition with non-native species

  • 01/01/2010

1 known site. A total of 4000individuals in 11 scattered colonies along a 17-mile drive on th western edge of the Monterey Peninsula

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Photos
Nomenclature
Taxon Astragalus tener var. titi
Authority (Eastw.) Barneby
Family Fabaceae
CPC Number 500
ITIS 192776
USDA ASTET
Common Names Coastal Dunes Rattleweed | Loco Weed Largeflower milkvetch | coastal dunes milk-vetch | coastal dunes milkvetch | Monterey clover
Associated Scientific Names Astragalus tener var. titi | Astragalus titi
Distribution NA
State Rank
State State Rank
California S1
Habitat

on bottoms or sides of the swales growing in association with other low growing grasses and herbs. relatively flat coastal terrace within 100 ft. of the ocean. Loamy fine sands comprise a series of shalllow swales

Ecological Relationships

Pollinators
Common Name Name in Text Association Type Source InteractionID

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