Jepson Flora Project: Jepson Interchange for California Floristics    
Gamochaeta americana (Mill.) Wedd.
Initial Editorial Analysis 11 Apr 2005
Source of Report for California 1990 Phytologia, as cited in Kartesz & Meacham
Initial Editorial Comments neither this name, nor any of the three synonyms in Gnaphalium listed in Kartesz & Meacham, even mentioned in Munz, The Jepson Manual [Ed. 1], so evidently an existing taxon newly reported for CA; possibly one of the Kartesz & Meacham synonyms in Gnaphalium would be used instead; "apparently adventive and uncommon..." in US localities, only one specimen (Tracy 15057, TEX) reported for California by Nesom (Phytologia 68:191. 1990)
Correspondence and Comments Subsequent to Initial Analysis
Correspondence 1 13 Jul 2004 e-mail from Jeff Greenhouse see Comment 1
Editorial Comments 1 Correspondence 1 indicates that Guy Nesom, The Jepson Manual [Ed. 2] Author of Gamochaeta and Gnaphalium, treats Gnaphalium purpureum L. var. americanum (Mill.) Klatt as a synonym of Gamochaeta americana (Phytologia 68:186-198.1990), and that the author of the basionym is Philip Miller (Mill., not P. Mill., in Authors of Plant Names). [Author citation corrected to Gamochaeta americana (Mill.) Wedd., from Gamochaeta americana (P. Mill.) Wedd. previously in this index, 6 Aug 2004; Nesom indicated (Phytologia 191:191) a single specimen from California (Humboldt Co., Tracy 15057, TEX), evidently representing an adventive plant, so it seems unlikely that the taxon is naturalized in the state.]
Correspondence 2 11 Apr 2005 e-mail from Jeff Greenhouse see Comment 2
Editorial Comments 2 Correspondence 2 indicates that Guy Nesom (The Jepson Manual [Ed. 2] Author), in SIDA 21:734--736 (2004), stated "Plants of the U. S. A. previously identified as Gamochaeta americana . . . are here identified as Gamochaeta coarctata (Willd.) Kerg. . . . Gamochaeta coarctata occurs mostly in the southeastern states and also apparently is naturalized in California"; and that in SIDA 21:1181 (2004) Nesom cites three records, two of them weeds in cultivated land and one 1936 collection from Humboldt Co. described as local and scarce from 1200' on a hillside pasture in a logged area and presumably the basis of his conclusion of apparent naturalization in CA.
Editorial Summary and Current Status
Editorial Summary rejection, misapplied name
Current Status JFP-8, accepted name for taxon not occurring in CA (erroneous reports, misapplication of names, misidentifications, other exclusions)
Current Status Authority Guy Nesom, as Author, The Jepson Manual [Ed. 2]
Current Status Date 11 Apr 2005
List of names for this Current Status category
List of ICPN names in Gamochaeta
List of names from ICPN, Hrusa's Crosswalk, and Jepson Flora in Gamochaeta

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