Oakmead Herbarium and Collections
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Intervention ecology now?
Calflora Great Places
Honoring Toni Corelli for 31 years of service to Jasper Ridge
Vascular Plants | Bryophytes | Lichens (.xlsx)
Plant photo favorites 
| Virtual tour with our photo archive
Fading wildflowers? Dissapearances and declines
The earliest known plant collections from the Jasper Ridge area are from 1867. Originally part of Volney Rattan's herbarium, the specimen sheets are conserved in the Preserve's herbarium and have the location Searsville. Over the intervening 145 years numerous workers have cumulatively reported more than 900 different vascular plants and 77 bryophytes. There are, however, other and perhaps more significant measures of the richness of the Preserve's flora . . . read more
Today the Oakmead Herbarium and Collections of Jasper Ridge Biological Preserve (JROH) has 6,000+ vouchers of all bryophytes and 800+ vascular plants representing over 10% of the 7,600 terminal taxa (species, subspecies, varieties) native or naturalized in California.* Specimen records are in the Consortium of California Herbaria.
- Vascular Plant List
- Phylogentic guide to Jasper Ridge Vascular Plant Families
- Jasper Ridge Biological Preserve Serpentine Flora
- JRBP Poales E-Flora
- C4 species at JRBP
- Plants of Searsville Lake and Wetlands South of Searsville Lake
- Jasper Ridge Global Change Experiment Plant List 2012
- Plants in the local flora with nitrogen-fixing symbionts
- Bryophyte Checklist
- Field characters of some bryophytes
- The Mosses of Stanford University and Vicinity
Lichens
- Renshaw, D. 2019. Common Lichens of Jasper Ridge (Note: 36 MB file, may download slowly).
- Preliminary Lichen Checklist (Excel)
- Doel, J. 1996. Key to the commoner lichens on Jasper Ridge.
- Tucker, S. 2014. Catalog of Lichens, Lichenicoles and Allied Fungi in California. Includes links to photographs
- Photos of some Jasper Ridge lichens
News
- Floral Postcards
- Calflora Great Places
- Herbarium Group
- Floristic Statistics (2006). N.B. 2019 estimation of the vascular flora is 814 native and naturalized taxa; 8/28/2019 How many plants grow here? in Floral Postcards
- Additions to the vascular flora 2000-
- Dissapearances and declines
- Weed Alert
- Herbarium weeding projects
- Arrival dates of some naturalized grasses
- Jasper Ridge place names
Maps & Vegetation Surveys
- Vegetation Map rev. 2016 (Affiliates)
- Geology Map (Affiliates)
- Sector Map Book (Affiliates)
- Herb Dengler Place Names + Google Earth version (Affiliates)
- Insolation Map
- Herb Dengler Vegetation Transect 1953 (Affiliates)
- CNPS Vegetation Rapid Assessments
- Map Archive Index (Affiliates)
Rare Plants and CNPS Rank
- Allium peninsulare Greene var. franciscanum McNeal & Ownbey [Rank 1B.2]
- Arabis blepharophylla Hook. & Arn. [Rank 4.3]
- Dirca occidentalis A. Gray [Rank 1B.2]
- Eryngium jepsonii J.M. Coult. & Rose [Rank 1B.2] (only San Mateo Co. loc)
- Lessingia hololeuca Greene [Rank 3]
- Malacothamnus fasciculatus (Torr. & A. Gray) Greene [Rank 1B.2]
- Monolopia gracilens A. Gray [Rank 1B.2]
- Piperia michaelii (Greene) Rydb. [Rank 4.2]
- Plagiobothrys chorisianus (Cham.) I.M. Johnst. var. hickmanii (Greene) I.M. Johnst. [Rank 4.2]
Notes
* While scientific names follow TJM2 and supplements, we also include plants and/or names not treated therein. Following the Marin Flora, 2nd ed, 2007: “We include here as naturalized species those that are established and have a true competitive status without cultivation whether the plant is aggressively spreading or seems only passively and locally established. . . . Experience has shown that the waifs of today may become the weeds of tomorrow". We also include named hybrids not given taxonomic status in TJM2, e.g., Elymus x hansenii, Quercus x jolonensis.
Photographs for most plants are linked to the Vascular Plant List entries. In addition to specimen labels and maps on many JROH specimen sheets, location, flowering time, and abundance records may also be found in the Field Observations Database and the JRBP Poales E-Flora.
References relevant to the floristics of Jasper Ridge Biological Preserve. The history of the herbarium is described by Jewett (2005) Documenting Plant Diversity: Jasper Ridge's Herbarium. For Stanford's rich botany heritage see Timby (1998) The Dudley Herbarium: its origin, fate, and legacy at Stanford. Jasper Ridge grassland-related research is surveyed in Stromberg, M. et al. (2007) California Grasslands Ecology and Management and Lunch (2009) Primary production at Jasper Ridge Biological Preserve.
