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Taxon  Report  
Agrostis lacuna-vernalis  P.M. Peterson & Soreng
Vernal pool bent grass
Agrostis lacuna-vernalis is an annual grasslike herb that is native to California.
California Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
Observation Search
~32 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
Genus: Agrostis
Family: Poaceae  
Category: angiosperm  
PLANTS group:Monocot
Jepson eFlora section: monocot

Wetlands: Occurs usually in wetlands, occasionally in non wetlands
Name Status:
Accepted by JEF + CNPS + PLANTS

Information about  Agrostis lacuna-vernalis from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora


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[elkhornsloughctp.org] History, Rarity: This inconspicuous annual was only discovered in 2006 by botanist Ellen Holmes during a CNPS field trip to Butterfly Valley at Fort Ord National Monument in Monterey County. During lunch she glanced down and saw a grass she didn?t recognize. She asked botanist Randall Morgan if he recognized it, but he did not. Morgan grew several plants and pressings made from these were sent to Paul Peterson and Robert Soreng at the Smithsonian in 2010. In late fall of that year, the experts determined that this was a new species, which was described in 2011 (Holmes, personal communication; Styer, personal communication; Peterson et al. 2011). The extremely rare species was given a California Rare Plant Rank of 1B.1 in 2012. (link added 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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 07/17/2024).