UNIVERSITY OF CALIFORNIA PUBLICATIONS 

 BOTANY 



Vol. 2, pp. 1-71, Pis. 1-11 May 10, 1904 



A REVIEW OF CALIFORNIA 

 POLEMONIACEAE.* f 



BY 



JESSIE MILLIKEN. 



INTRODUCTION. 



The Polemoniaceae, while clearly defined as a natural order of 

 plants, show unusual complexity of variation within the order. 

 By far the greater number of species belong to the western coast 

 of America, hence coming to the observation of botanists only in 

 comparatively recent years. 



The order was first defined by Jussieu in 1789, and called by 

 him Polemonia, including the genera Phlox and Polemonium of 

 Linnaeus, and Cantua and Hoitzia of his own. According to 

 Engler and Prautl, Bentham and Hooker, and De Candolle, the 

 genus Hoitzia is synonymous with Loeselia of Linnaeus, and the 

 latter name has remained for six or seven species of Mexican 

 plants. Phlox, Polemonium and Loeselia, with the two Mexican 

 genera, Cobaea and Bonplandia of Cavanilles, have been con- 

 sidered as acceptable from the time of their naming by the early 

 scientists. As this paper treats only of the California Polem- 

 oniaceae, the three genera, Loeselia, Cobaea and Bonplandia, 

 which have no representatives within the state are not considered. 



In 1798 an expedition was made from Spain to the western 

 coast of South America, and during their visit to Chili and Peru, 

 two Spanish botanists, Hypolito Ruiz and Joseph Pa von, collected 

 many plants, representing, according to their opinion, one hun- 



* Thesis presented in partial fulfilment of the requirements for the degree of 

 .Muster of Science, University of California, December, 1902. Prepared under the 

 direction of Professor W. L. Jepson. 



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