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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] Its second edition is the basis of the online Jepson eFlora.
It was established to "understand and conserve the California flora." In addition to the herbarium specimens research staff work on botanical projects that include updating The Jepson Manual, as well as related online resources for identifying California flora. A series of workshops on botanical and ecological subjects are designed and run to ...
As of 2011, The Jepson Manual includes Nassella within Stipa. [3] Nasella is characterized by strongly overlapping lemma margins and reduced, veinless paleae. The lemma tips are fused into the "crown", a short membrane that surrounds the base of the lemma. The rim of the crown usually has hairs.
In 1960, Heckard was named assistant curator at the Jepson Herbarium. [1] Here, he worked to revise The Jepson Manual. He also served as chairman to the American Society of Plant Taxonomists from 1961-1966, president of the California Botanical Society in 1971, and director of the California Native Plant Society. [2]
The second edition of the Jepson Manual places the genus in Agavaceae (equivalent to the APG III subfamily Agavoideae). [5] Until the 1980s, the genus was generally treated in the Lily family, Liliaceae, in the order Liliales, e.g. the Flora of North America, published in 1993 onwards, has Chlorogalum in Liliaceae. [6]
Flora of North America and The Jepson Manual have elevated Dudleya parva to a species, while other subspecies have been moved to Dudleya cymosa [2] The following subspecies are recognized in the 2012 Jepson eFlora: Dudleya abramsii subsp. abramsii Rose (Abrams' liveforever) – native to the Peninsular Ranges of California and Baja California. Syn.
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This key characteristic was lacking in Jepson Manual first edition, but is now included in Jepson Manual second edition. [ 3 ] A Camissonia which resembles either C. contorta or C. benitensis growing on serpentine soil in upland geologic transition zone habitat or serpentine stream terrace habitat within serpentine masses is virtually always C ...