462 BOTANICAL GAZETTE [DECEMBER 
ROEZL AND THE TYPE OF WASHINGTONIA 
The palms on which WENDLAND founded his genus Washingtonia were 
grown from seed procured by RoEzL. They purported to have come from 
“Nord Mexico, bei Arizona, am Rio Colorado,” but where they really came 
from has never been ascertained. In investigating the history of the genus 
it proved very difficult to obtain any account of Rorz’s American explora- 
tions. I was able to learn only of a journey made by him across the north- 
ern continent in 1872, and was therefore led to assert? that this was his only 
visit to our country. In fact, however, he had made a far more extended 
tour in 1868-1870, in the course of which he explored much of the United 
States and Mexico, and of Columbia in the southern continent. Some 
account of these journeyings is given in notes published by ORTGIES in 
volumes 20 and 23 of Gartenflora. Dr. TRELEASE, director of the Missouri 
Botanical Garden, has obligingly furnished me with an abstract of these 
notes, and from them I am able to present the following account of ROEzL’s 
explorations in the United States. 
OEZL must have gone from Europe directly to Mexico, and he spent 
the winter of 1868-1869 in collecting in that state and in Yucatan. In 
March of the latter year he sailed from Havana for New York. He then 
visited several of the seaboard cities and made some collections in the Alle- 
gheny mountains, after which he departed for the west by way of St. Louis, 
Chicago, and Omaha. On July 15, 1869, he was in Cheyenne, and * 
August 28 in Truckee. Considerable time was devoted to collecting 17 
Utah and Nevada, but by November 7 he had reached San Francisco, by 
way of Sacramento. After a run back to Nevada City he returned to San 
Francisco, and went thence to San Diego. The object of his southern trip 
was to gather Delphinium cardinale, and he sent to Europe two thousand 
roots that he supposed to be of that species. Eventually, on flowering they 
proved to be one of the blue larkspurs, probably D. Parryi. Here also he 
got two plants which were introduced to European cultivation as Yucca 
schidigera and Y. Ortgiesiana, unquestionably the species now known 4s 
Yucca mohavensis and Hesperoyucca Whip plei. 
Roezz returned to San Francisco in time to sail on January 18, 1870, 
for Panama, and after g extensi llections in Columbia and Mexico, 
again reached San Francisco August 1, 1870. PAs 
After a week spent in Hoopa Valley, he sailed for the north, visiting 
3 Bor. GAZETTE 44:414. 1907. Footnote ro on this page should be — 
follows: dele 1889: 330; for Jour. Bot. 1874: read 1884:; for Gard. Chron. 2+5 
1889 read Gard. Chron. N.S, 24:521. 1888. 
