Jepson Flora Project: Jepson Interchange for California Floristics    
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Isoetes occidentalis L. F. Hend.
ISOETACEAE
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Information from the Index of California Plant Names (ICPN)
Synonyms Cited in The Jepson Manual Isoetes lacustris var. paupercula Engelm.
Misapplications Cited in The Jepson Manual Isoetes lacustris L.
Initial Editorial Analysis Nov 1 2001
Source of Report for California The Jepson Manual [Ed. 1]
Correspondence and Comments Subsequent to Initial Analysis
Correspondence 1 19 Dec 2002 e-mail from Jeff Greenhouse see Comment 1
Editorial Comments 1 Correspondence 1 indicates UC1259254 was determined to be Isoetes occidentalis by W. Carl Taylor (Flora North America co-author for Isoetes) in 1998, thus documenting this species for Kearny Mesa in San Diego Co. (SCo) at 500' (= 150 m), a locality well outside the elevation and distributional ranges in The Jepson Manual [Ed. 1]; thus, "(150 m in SCo)" and "SCo (Kearny Mesa, San Diego Co.)" are to be added to the statement originally in The Jepson Manual [Ed. 1], yielding "> 1500 m (150 m in SCo). KR. SNH, SCo (Kearny Mesa, San Diego Co.); to B.C., Colorado.
Correspondence 2 13 Jun 2011 e-mail from Alan R. Smith, including forwarded e-mails of 9 Sep 2011 from W. Carl Taylor, The Jepson Manual [Ed. 2] author, to Alan Smith, as well as an earlier e-mail of 9 Sep 2011, from Smith to Taylor see Comment 2
Editorial Comments 2 Correspondence 2 includes confirmation from Carl Taylor that Alan Smith and Jon Rebman were correct in determining that UC1259254 in fact belongs to Isoetes howellii and does not belong to Isoetes occidentalis L. F. Hend., so that the latter is not confirmed for Kearny Mesa in San Diego Co., and therefore not for SCo either; Taylor also stated that in California Isoetes occidentalis L. F. Hend. does not occur as far south as SCo, nor as low in elevation as 150 m.
Editorial Summary and Current Status
Current Status JFP-1, accepted name for taxon native to CA
Current Status Authority The Jepson Manual [Ed. 1]
List of names for this Current Status category
List of ICPN names in Isoetes
List of names from ICPN, Hrusa's Crosswalk, and Jepson Flora in Isoetes

Resources of the Jepson Flora Project: External links:
·Distribution maps: County distribution based on CCH specimens
Manual imageJepson eFlora
link image Consortium of California Herbaria specimen records (includes links to BerkeleyMapper)
· Jepson eFlora page with bioregion map and CCH specimen records
Manual imageArchived Indexes from The Jepson Manual (1993; TJM1)
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