MARIPOSA COUNTY AS A BOTANICAL DISTRICT. 
III. 
BY J. W. CONGDON. 
Before proceeding to discuss the plants of the coniferous belt, I 
take this opportunity to make some corrections in my former lists. 
Since they were prepared, it has been my good fortune to visit 
San Francisco and enjoy the opportunity there to study, as well as 
I could in the brief time which other engagements permitted, the 
large collections of the Academy of Sciences, principally, with re- 
ference to the correction of errors in my determinations of our 
many difficult species. 
In making this examination I was indebted to Mrs. Katherine 
Brandegee, curator of the herbarium, for valuable suggestions and 
assistance, which it gives me great pleasure to acknowledge. 
These corrections, as will be seen, consist partly in correcting mis- 
takes in identifying the plants themselves, and partly in making the — 
nomenclature adopted conform to the latest and best authorities. 
This applies principally to the Umbbellifere.  Podosciadium Calz- 
fornicum Gray of Bot. Cal. is Awlophus Californicus C. & R. 
of Coulter and Rose’s Revision of the Umbelliferee. Ferula disso- 
luta Wats. is Leptotenia dissecta Nutt. Deweya Hartwegi Gray is 
Velea Hartwegi C. & R. Stephanomeria paniculata Nutt. should 
be SS. vizgata Nutt. 
The plant referred toas Phacelia phyllomanica Gray is P. platyloba | 
Gray, and is also clearly the plant described by Mr. Greene under 
the name of P. Arthuri. Mr. Greene’s character is taken from 
a single plant, evidently a waif from the foothill region, where the 
species is not rare. 
Mimulus nanus Hook. & Arn. of the list is clearly a mixture of 
two and probably three species. The Mariposa plant is Mimulus 
subsecundus Gray, mingled with an apparently undescribed species 
of the same general habit. . 
In the coniferous belt, the place of these species is taken by an- 
other which, judging from careful observations made since my. 
return, is probably the original Mimulus nanus of Gray, but 
whether Gray’s plant or the present agrees with the zanus of Hooker 
and Arnott I have no means of determining. 
