48 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 13 



Before Pond's collection of 1889, Streets had collected, among other 

 plants the endemics Lavatera venosa, and Hemizonia Streetsii. Follow- 

 ing Pond the next important collection is that of the remarkable pereg- 

 rinating botanist, Edward Palmer, who visited the San Benitos in March 

 of the same year that Pond did. His collections w^ere reported by J. N. 

 Rose (1890:20-21). No additions to Greene's first published list of 25 

 species were made, however, until Brandegee visited the San Benito 

 Islands on the voyage of the Wahlberg in 1897 and published (1900: 

 22-23) a small supplementary list, bringing the known flora of the San 

 Benitos to 40 species. Rose and Rempel appear to complete the roster 

 of collectors on San Benito Islands (Table 2). 



Except for the five plants which still appear to be endemic to the 

 San Benito Islands, the flora is almost completely repeated on Cedros 

 Island, the exceptions being common wide-spread species, as Lepidium 

 lasiocarpum, which may have been passed by collectors on Cedros. Be- 

 cause of the striking lack of the genera Astragalus and Eriogonmn in 

 the San Benito flora, Greene saw a straight relationship between the 

 San Benito flora and that of Guadalupe Island 150 miles westward, 

 and not at all between San Benito and Cedros. The absence of these 

 genera, so conspicuous on the peninsula and on Cedros Island, is, of 

 course, interesting, and the explanation of it could easily lead one into 

 many conjectures. However, because so many Cedros genera and species 

 are represented on the San Benito Islands and so few of the Guadalupe 

 Island species are, Greene's statement now appears rather meaningless. 

 The position and character of the San Benito flora, however, does re- 

 main in part anomalous. 



The collection of 15 numbers by P. J. Rempel from the San Benito 

 Islands during July on the 1937 voyage of the Velero III, is apparently 

 the first to be made in summer. Although no novelties are added, the 

 collection provides fruiting and flowering records and one addition, 

 Mesembryanthemum nodiflorum^ as annotated below in the catalogue 

 of species. 



