Jepson Flora Project: Jepson Interchange for California Floristics    
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Ceanothus velutinus Douglas var. laevigatus Torr. & A. Gray
RHAMNACEAE
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Information from the Index of California Plant Names (ICPN)
Initial Editorial Analysis 28 Jun 2010
Source of Report for California Correspondence 1
Correspondence and Comments Subsequent to Initial Analysis
Correspondence 1 4 Jun 2008 e-mail from Jeff Greenhouse see Comment 1
Editorial Comments 1 Correspondence 1 indicates: that Ceanothus laevigatus DC. was published in 1825 (Prodromus Systematis Naturalis Regni Vegetabilis 2:30. 1825); that Hooker, in a later publication (Flora Boreali-Americana 1:125. 1831) published the illegitimate later homonym Ceanothus laevigatus Douglas, attributing the description to "Douglas, MSS."; that Ceanothus velutinus var. laevigatus Torr. & A. Gray was published in A flora of North America 1:686 (1840), referencing the illegitimate Ceanothus laevigatus Douglas as a synonym; that ICBN (2006) Art. 58.1 specifies that the Torrey & Gray name is a legitimate nom. nov. dating from 1840, in that when Marshall C. Johnston (M. C. Johnst. in Authors of Plant Names) published Ceanothus velutinus var. hookeri "nom. nov." (Leaflets of Western Botany 10:64. 1963), he cited Ceanothus velutinus var. laevigatus Torr. & A. Gray (A flora of North America 1:686. 1840) as a synonym, and, in so doing, Johnston disregarded the ICBN (1961) Art. 72 (currently rephrased as Art. 58.1) which defined Torrey & Gray's combination as a legitimate comb. nov.; and that, therefore, Ceanothus velutinus var. hookeri M. C. Johnst. is superfluous and Ceanothus velutinus var. laevigatus Torr. & A. Gray is the correct name.
Correspondence 2 Treatment and author notes submitted for The Jepson Manual [Ed. 2] by Dieter H. Wilken see Comment 2
Editorial Comments 2 Correspondence 2 indicates that for The Jepson Manual [Ed. 2] Ceanothus velutinus Douglas var. laevigatus Torr. & A. Gray is to be treated as a synonym of Ceanothus velutinus Douglas.
Editorial Summary and Current Status
Editorial Summary rejection, to be treated as synonym for The Jepson Manual [Ed. 2]
Current Status JFP-1a, taxonomic or nomenclatural synonym for taxon native to CA
Current Name Ceanothus velutinus Douglas
Current Status Authority The Jepson Manual [Ed. 2]
Current Status Date 28 Jun 2010
List of names for this Current Status category
List of ICPN names in Ceanothus velutinus
List of names from ICPN, Hrusa's Crosswalk, and Jepson Flora in Ceanothus

Resources of the Jepson Flora Project: External links:
·Distribution maps: County distribution based on CCH specimens
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