Jepson Flora Project: Jepson Interchange for California Floristics    
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Cenchrus spinifex Cav.

Information from the Index of California Plant Names (ICPN)
Current Jepson Flora Project Synonyms Cenchrus incertus M. A. Curtis; Cenchrus pauciflorus Benth.
Initial Editorial Analysis 18 Aug 2020
Notes on Authorship of Name = Authors of Plant Names
Source of Report for California The Jepson Manual [Ed. 1], as cited in Kartesz & Meacham
Initial Editorial Comments in no way mentioned in The Jepson Manual [Ed. 1] (despite Kartesz & Meacham citation); indicated as noxious in CA, NV, AZ, and otherwise present NM to FL, and ne US in Kartesz & Meacham; Cenchrus incertus listed as synonym in Kartesz & Meacham.
Correspondence and Comments Subsequent to Initial Analysis
Correspondence 1 14 Aug 2020 e-mail from Dave Keil see Comment 1
Editorial Comments 1 Correspondence 1 indicates that according to Verloove & Sânchez Gullón [Verloove F. & Sânchez Gullón E.: A taxonomic revision of non-native Cenchrus s.str. (Paniceae, Poaceae) in the Mediterranean area. Willdenowia 42: 67 – 75. June 2012], if considered conspecific with Cenchrus spinifex Cav. (1799), plants treated as Cenchrus incertus M. A. Curtis (1835) in this Index and in the eFlora should be called Cenchrus spinifex Cav., based on priority. [According to Verloove & Sânchez Gullón, "The application of the binomial Cenchrus spinifex is not uncontested. In addition to the aforementioned taxonomic difficulties there is still a nomenclatural problem. DeLisle (1963) already evoked that the correct name for C. incertus might be C. spinifex, which, indeed, antedates the former (1837 [sic] versus 1799). As he had not been able to study the holotype of C. spinifex and the correctness of the isotype label had not been verified, he rejected this binomial. In the recent treatment of Cenchrus for North America (Stieber & Wipff 2003) the plants here concerned are referred to as C. spinifex but it is unclear whether or not these authors had effectively resolved the nomenclatural problem. Moreover, C. incertus is not even mentioned as a synonym by these authors. In the recent catalogue of New World grasses (Zuloaga & al. 2003), C. incertus is upheld and it is stated that "... if C. spinifex turns out to be conspecific, a conservation proposal will be considered". According to Ward (2010), C. spinifex is an unidentifiable name that should be rejected. Symon (2010), who examined a digital image of the holotype, on the contrary confirms that both are conspecific and hence C. spinifex should finally be accepted as the correct name for this species. Joseph Wipff recently also investigated the type of the latter name and states that it definitely refers to the taxon traditionally called C. incertus (pers. comm. March 2012). Therefore, Current Status of Cenchrus spinifex Cav. changed to Jepson Flora Project-2, from Jepson Flora Project-2a previously in this Index, 18 Aug 2020.]
Editorial Summary and Current Status
Editorial Summary addition, to be treated as accepted name since The Jepson Manual [Ed. 2]
Current Status JFP-2, accepted name for taxon naturalized in CA
Current Status Authority Jepson Flora Project
Current Status Date 18 Aug 2020
List of names for this Current Status category
List of ICPN names in Cenchrus
List of names from ICPN, Hrusa's Crosswalk, and Jepson Flora in Cenchrus

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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