Correspondence 1 indicates that, according to Dieter H. Wilken, The Jepson Manual [Ed. 1] author, the taxonomic changes in Myosurus, as presented by Whittemore (Flora North America 3:136-137. 2000) are completely acceptable. [In the treatment cited, Whittemore recognizes three vars., indicating ranges for two that include California (and elsewhere in NA), Myosurus apetalus Gay var. borealis Whittem. and Myosurus apetalus Gay var. montanus (G. R. Campb.) Whittem.; Myosurus apetalus Gay var. apetalus is indicated for South America.]
Correspondence 2 confirms that for The Jepson Manual [Ed. 2] Myosurus apetalus Gay var. montanus (G. R. Campb.) Whittem. is to be recognized and treated as native to CA.