Abstract
A federal survey of Rancho Muscupiabe in 1867 provided legal land description of 12,204 ha (30,145 acres) in San Bernardino Valley, southern California, which fortuitously includes records of prominent native vegetation marking the location of survey stations along the land grant boundary. We matched legal land descriptions to the mapped vegetation occurrences, documented before agricultural land use and urbanization cleared the land, to relocate site-specific species localities in 1867 for comparison to historical botanical collections and extant distributions. We show that Juniperus californica, a desert conifer uncommon in cismontane regions of southern California, occurred at Del Rosa near Little Sand Creek on the northern boundary of Rancho Muscupiabe, which extends the historical species range from nearest extant occurrences on alluvial terraces along the Santa Ana River Wash (7 km SE) and Cajon Creek (13 km W). Vegetation records accompanying the 1867 survey also document the endemic Juglans californica at Devil Canyon in the San Bernardino Mountains, and at the SE base of San Sevaine Ridge in the San Gabriel Mountains. The 1867 survey map predates earliest recorded botanical collections in San Bernardino County of Juniperus californica (JEPS48231) and Juglans californica (POM123336) by 15 yr. A synthesis of historical and modern data is presented to build upon comprehensive atlases of California vegetation and show that the easternmost distribution of Juglans californica extends along the cismontane foothills of the San Bernardino Mountains to Millard Canyon near Banning Pass.
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Claims 4
Claim · model-written summary
Juniperus californica occurred at Del Rosa, extending its historical range.
- Taxon
- Juniperus californica
Juniperus californicae0 - Outcome
- occurred at Del Rosa near Little Sand Creeke0
- Value
- 7 km SEe0
- Setting
- Del Rosa near Little Sand Creeke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We show that Juniperus californica, a desert conifer uncommon in cismontane regions of southern California, occurred at Del Rosa near Little Sand Creek on the northern boundary of Rancho Muscupiabe, which extends the historical species range from nearest extant occurrences on alluvial terraces along the Santa Ana River Wash (7 km SE) and Cajon Creek (13 km W).”
Claim · model-written summary
Historical records place Juglans californica at Devil Canyon.
- Taxon
- Juglans californica
Juglans californicae0 - Outcome
- at Devil Canyone0
- Setting
- Devil Canyon in the San Bernardino Mountainse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vegetation records accompanying the 1867 survey also document the endemic Juglans californica at Devil Canyon in the San Bernardino Mountains, and at the SE base of San Sevaine Ridge in the San Gabriel Mountains.”
Claim · model-written summary
Historical records place Juglans californica at the southeast base of San Sevaine Ridge.
- Taxon
- Juglans californicaJuglans californicae0
- Outcome
- at the SE base of San Sevaine Ridgee0
- Setting
- San Gabriel Mountainse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vegetation records accompanying the 1867 survey also document the endemic Juglans californica at Devil Canyon in the San Bernardino Mountains, and at the SE base of San Sevaine Ridge in the San Gabriel Mountains.”
Claim · model-written summary
The easternmost Juglans californica distribution extends to Millard Canyon.
- Taxon
- Juglans californicaJuglans californicae0
- Outcome
- easternmost distributione0
- Setting
- Millard Canyon near Banning Passe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the easternmost distribution of Juglans californica extends along the cismontane foothills of the San Bernardino Mountains to Millard Canyon near Banning Pass.”