34 PITTONIA. 
REVISION OF ROMANZOFFIA. 
This genus was founded more than eighty years since on 4 
species still known only from Unalaska and two or three of the 
other outlying islands of that far-northern sea. This original 
species, Æ. Unalaschensis, is so well marked in its character that 
no one fails to identify it; nor do specimens of other species 
seem to have become mixed with it in the herbaria. 
The second species, R. Sitchensis, also first made known seventy 
years since, and equally a northern seaboard species, appears to 
have grown in the herbaria to be an extensive aggregate, em- 
bracing plants from as far south as middle California, and others 
from high and comparatively dry mountain ranges and summits 
of the remote interior. 
While in California I came to disbelieve the identity of the 
Californian so-called R. Sitchensis with the original which belongs 
to a region twelve hundred to fifteen hundred miles northward; 
but I had not access at that time to the data needful for under- 
taking the solution of the problem. Since then much has been 
accumulated; and now, the copious materials representing this 
genus in the herbarium of the Canadian Geological Survey 
having been sent me for identification, a series of specimens in 
which one sees at first glance two or three species hitherto un- 
known, I have found it incumbent on me to go back to the be- — 
ginnings of the history of Romanzofia, determine for myself the 
characters of the original species, in order to be the surer of my 
ground, and am thus compelled, as it were, to accept a greater 
number of species than I had at all anticipated. 
In the course of these investigations I have made a discovery 
in Romanzoffia corresponding to that made in Dodecatheon in 
1888,' and in Cicuta in 1889, and which have long since effected 
1 PITTONIA i, 210. ? PITTONIA ji, 2. 
