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The Jepson Manual is a flora of the vascular plants that are either native to or naturalized in California. Botanists often refer to the book simply as Jepson . It is produced by the University and Jepson Herbaria , of the University of California, Berkeley . [ 1 ]
It was founded by Willis Linn Jepson in 1950, and named after him. [7] The Jepson Herbarium supports the Jepson eFlora, a taxonomic database that builds on and expands the second edition of The Jepson Manual. It describes itself as "the foremost authority on the native and naturalized vascular plants of California". [8]
In 1993, The Jepson Manual estimated that California was home to 4,693 native species and 1,169 native subspecies or varieties, including 1,416 endemic species. A 2001 study by the California Native Plant Society estimated 6,300 native plants.
Jepson wrote at least 11 books during his lifetime, with two focused on California's trees. His works include A Flora of California (1909), The Trees of California (1909); and the major A Manual of the Flowering Plants of California (1925), predecessor of The Jepson Manual (1993). A Flora of California – Volume I. San Francisco: Cunningham ...
D. minthornii was described as Hemizonia minthornii by Willis Linn Jepson in his 1925 Manual of the Flowering Plants of California. [8] Its botanical name honors botanist Theodore Wilson Minthorn and his sister Maud Minthorn who collected plants in Southern California in the beginning of the 20th century.
Allium jepsonii, the Jepson's onion, grows to a height between about 20 and 40 centimeters from one or two oval-shaped bulbs. There is a single cylindrical leaf which is about the same length as the stem. The inflorescence holds 20 to 60 small flowers, each under a centimeter long with pink-veined white tepals with curling tips. [4] [6] [7]
Galium jepsonii, with the common name Jepson's bedstraw, is a rare flowering plant species in the Rubiaceae — Madder family. [ 1 ] [ 2 ] The species name honors renowned California botanist Willis Linn Jepson .
Jepson's Farm and Jepson's Gate of Anglezarke, a civil parish in Lancashire, England; The Jepson Laurel, the oldest known living laurel tree; The Jepson Manual, California plant identification often referred to as simply Jepson; Jepson School of Leadership Studies, University of Richmond, Virginia, USA; Harry Jepson Trophy, a rugby trophy
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